Mailman 3 February 2007 - Python-Dev

dinner at Standard in Dallas
by Jeremy Hylton 25 Feb '07

25 Feb '07

I'm organizing a trip to Standard in downtown Dallas for dinner tonight (Sunday night). It's about a 10 minute cab ride to Standard. We can share cabs and get there without too much trouble. The restaurant is on the expensive side. I'm thinking we should leave from the hotal around 6:30pm. http://www.standarddallas.com/ http://restaurants.dallasobserver.com/search/restaurants.php?oid=27399 A large group of us went for dinner last year and had a great time. The food was excellent, short ribs and mashed potatoes with truffles stand out in my mind. They also serve a tangerita cocktail--margerita made with Tang--that was memorable. Let me know if you'd like to come and I'll make reservations and arrange for cabs. Jeremy [Apologies if you get two copies of this message. The first one looks like it got lost or stuck.]

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dinner at Standard in Dallas
by Jeremy Hylton 25 Feb '07

25 Feb '07

I'm organizing a trip to Standard in downtown Dallas for dinner tonight (Sunday night). It's about a 10 minute cab ride to Standard. We can share cabs and get there without too much trouble. The restaurant is on the expensive side. I'm thinking we should leave from the hotal around 6:30pm. http://www.standarddallas.com/ http://restaurants.dallasobserver.com/search/restaurants.php?oid=27399 A large group of us went for dinner last year and had a great time. The food was excellent, short ribs and mashed potatoes with truffles stand out in my mind. They also serve a tangerita cocktail--margerita made with Tang--that was memorable. Let me know if you'd like to come and I'll make reservations and arrange for cabs. Jeremy

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Embedded Python:: C/Python: Is Py_Finalize() necessary between embedded function calls?
by Sydney Pang 25 Feb '07

25 Feb '07

Hi, I am developing an application where I have Python embedded in C functions using the C/Python API to execute commands. My question stems from my need to preserve a PyObject to pass between these Python embedded C functions. My question is: do I have to call Py_Finalize() at the end of each Python embedded C function? The abstract structure of my code looks like this: PyObject *po; main() { po = py_function_1(); // some C code in the middle here... po = py_function_2(po); // some more C code here... } In my implementation of py_function_1 and py_function_2 do I have to call Py_Initialize() and Py_Finalize at the beginning and end of each of the two functions? Or can I just call Py_Initialize at the beginning of py_function_1 and then call Py_Finalize() at the end of py_function_2? Thank You. SP

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Unicode command line parameter missing
by Joseph Armbruster 24 Feb '07

24 Feb '07

Python Versions: 2.5 and trunk Browsing through the code this evening and noticed a discrepancy between the command line parameters listed with --help and those truly available in the code. Namely with the -U Unicode flag.. The -U option was added back in 2000, rev 15296 and mention of it was removed in rev 25288. Should the -U option still be handled from the command line? Python 2.5 Session without flag: >python Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> a = "monty" >>> a 'monty' >>> Python 2.5 Session with flag: >python -U Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> a = "monty" >>> a u'monty' >>> Joseph Armbruster

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C decimal project.
by Mateusz Rukowicz 24 Feb '07

24 Feb '07

Hi, Last holidays I was writting C decimal during summer of code 2006, I planned to take a breath for 1-2 months and then continue work, but well, things didn't go the way I planned. Now I am ready to continue work, I mainly plan to optimize it a little bit (top priority would be cut some copying) and add C api, so C decimal would eventually leave sandbox. My question is - am I permitted to just continue work on svn? Or there is something I have to do before that? Any sugestions etc. would be appreciated. Thanks in advance and best regards, Mateusz Rukowicz.

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NOARGS_NULL
by "Martin v. Löwis" 24 Feb '07

24 Feb '07

Patch #1648268 corrects a huge load of errors in Python wrt. incorrect function pointers (i.e. functions called with a different signature then declared, through pointers). The rationale for this patch is that the submitter apparently has a platform where Python crashes in the face of these errors. I believe the patch is correct, and would like to apply it. The patch also renames many function arguments: parameters in a METH_NOARGS function get consistently named NOARGS_NULL (currently often called 'unused' or 'noargs'); the second parameter to getters gets consistently named 'closure' (it's called closure in many places already, and 'unused' in others). I would also apply this part of the change, and both to the trunk and Python 2.5. Objections? Regards, Martin

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Old bug still unfixed? [ python-Patches-1183712 ] package_data chops off first char of default package
by Hans Meine 23 Feb '07

23 Feb '07

Hi! (I first posted this to distutils-sig but was told that distutils is a bit neglected there, so I decided to try to push these simple patches in via python-dev.) Lately, a student came to me complaining about an old distutils bug which bit him: http://mail.python.org/pipermail/patches/2006-August/020642.html The patch is quite trivial and cannot possibly break something AFAICS, so could someone please apply it? (Hmm, now that I write this; we are still using python 2.4.4 here, so maybe it has been fixed in between?) Ciao, / / /--/ / / ANS

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[PATCH] Handling of scripts / substitution of python executable path
by Hans Meine 23 Feb '07

23 Feb '07

Hi! For a long time, I have been annoyed by distutils behavior concerning "scripts": I always put #!/usr/bin/env python into the first line in order to let the incredibly useful "env" program start the right python version. I know that it is quite evil to hardcode /usr/bin/python or /usr/local/bin/python; I have seen dozens of #! hacks for finding e.g. perl, and I was delighted to find /usr/bin/env, which solves the problem once and for all. (And yes - it is always in /usr/bin/! ;-) ) Now distutils tries to be intelligent and "destroys" my nice #! lines, which can be quite evil in complex setups, e.g. when you share your home directory via NFS (or rsync/unison) between several environments with different python installations. Furthermore, we are using the "module" system here at our university, so that I can dynamically choose between half a dozen python versions ("module" manages your PATH variables). Replacing the python path turns nice, pure python scrips into platform-specific programs as you can see here: meine@kogspc12:~ head -n1 ~/vigra/interactive/build/scripts-2.4/pyterm #!/software/python-2.4.4/SuSE-9.0/bin/python Note the SuSE-9.0 exec-prefix in the path; we are using several Linux and Solaris versions here: meine@kogspc12:~/tmp/vi3build -> ls -1 /software/python-2.4.4/*/bin/python /software/python-2.4.4/SuSE-10.0/bin/python* /software/python-2.4.4/SuSE-9.0/bin/python* /software/python-2.4.4/SunOS-5.8/bin/python* I see that distutils as it is now does the right thing * on Windows systems, * on any system where /usr/bin/env is missing, or * when the source file has a #! with a broken path. What I propose is a minimal invasive change which keeps /usr/bin/env iff it is in the #! line *and* exists on the current system. (A more brave change would be to always use /usr/bin/env if it exists, but I think that is a topic open for discussion.) Attached you'll find a patch which implements this; I did not yet update tests/test_build_scripts.py however. Comments? (I first posted this to distutils-sig but was told that distutils is a bit neglected there, so I decided to try to push these simple patches in via python-dev.) Ciao, / / /--/ / / ANS

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Re: [Python-Dev] [Python-checkins] r53860 - peps/trunk/pep-0000.txt peps/trunk/pep-0358.txt
by Guido van Rossum 23 Feb '07

23 Feb '07

[-python-checkins, +python-dev] On 2/22/07, Jim Jewett <jimjjewett(a)gmail.com> wrote: > > __setitem__ > > __setslice__ > > append > > count > > + decode > > + endswith > > extend > > + find > > index > > insert > > + join > > + partition > > remove > > + replace > > + rindex > > + rpartition > > + split > > + startswith > > + rfind > > + rindex > > + rsplit > > + translate > > What sort of arguments do they take? You should be able to infer this from what the corresponding str or list methods do -- always substituting bytes for those, and int for the single element. > Other bytes objects? (Then the literal is more important.) > > Unicode? With an extra decoding argument? The only way to use unicode is to use bytes(<unicode>, <encoding>). The others methods barf on Unicode. > Sequences of integers? Is startswith(500) False or a ValueException? TypeError. > Single integers? startswith(ord('A')) TypeError (this is the same as the previous.) > + Note the conspicuous absence of .isupper(), .upper(), and friends. > > This does force the use of more regular expressions, by ruling out > > data.upper().startswith("ERROR:") Yeah, over dinner we started leaning towards perhaps supporting at least lower() and upper() (but acting only on the 2x26 ASCII letters). -- --Guido van Rossum (home page: http://www.python.org/~guido/)

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Re: [Python-Dev] Bundling decimal.py with Django
by python＠rcn.com 22 Feb '07

22 Feb '07

> What is the license for the decimal module, > and is said license compatible > with the BSD license that Django uses? It is the the same license as Python itself: http://www.python.org/psf/license/ > Are the authors of the decimal module OK > with usdistributing it with Django? You don't need my okay, but you've got it anyway. Per the source file, the listed authors are: # Written by Eric Price <eprice at tjhsst.edu> # and Facundo Batista <facundo at taniquetil.com.ar> # and Raymond Hettinger <python at rcn.com> # and Aahz <aahz at pobox.com> # and Tim Peters

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