Mailman 3 November 2009 - Python-Dev

buildtime vs runtime in Distutils
by Tarek Ziadé Nov. 19, 2009

Nov. 19, 2009

Hello, http://bugs.python.org/issue4359 reminds me that Distutils reads build files like Makefile or pyconfig.h to get some environment variables through the sysconfig module at *runtime*. This cannot work on all platforms, when our Makefile is not shipped with python but python-devel. (like Fedora) Since I am already working on the refactoring of this distutils/sysconfig module, so it lands in a stdlib module together with some elements from site.py (see a previous mail on the topic, and my … [View More]

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Add an optional timeout to lock operations
by Antoine Pitrou Nov. 18, 2009

Nov. 18, 2009

Hello, I've submitted a patch (*) to add an optional timeout to locking operations (Lock.acquire() etc.). Since it's a pretty basic functionality, I would like to know if there was any good reason for not doing it. (*) http://bugs.python.org/issue7316 Thank you Antoine.

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Static analysis of CPython using coccinelle/spatch
by David Malcolm Nov. 18, 2009

Nov. 18, 2009

Has anyone else looked at using Coccinelle/spatch[1] on CPython source code? It's a GPL-licensed tool for matching semantic patterns in C source code. It's been used on the Linux kernel for detecting and fixing problems, and for autogenerating patches when refactoring (http://coccinelle.lip6.fr/impact_linux.php). Although it's implemented in OCaml, it is scriptable using Python. I've been experimenting with using it on CPython code, both on the core implementation, and on C extension modules.… [View More]

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2.7 and 3.2 release schedules
by Benjamin Peterson Nov. 18, 2009

Nov. 18, 2009

After more thought, I think that separating the 2.7 and 3.2 releases is not as big of an issue as I once thought. Therefore, I'd like to adopt the schedule I posted a few weeks back for 2.7 only. This only means some other lucky victi... I mean volunteer can do 3.2. :) -- Regards, Benjamin

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new unbounded memory leak in exception handling?
by Greg Hewgill Nov. 17, 2009

Nov. 17, 2009

I've constructed an example program that does not leak memory in Python 2.x, but causes unbounded memory allocation in Python 3.1. Here is the code: import gc import sys class E(Exception): def __init__(self, fn): self.fn = fn def call(self): self.fn() def f(): raise E(f) a = E(f) while True: print(len(gc.get_objects())) try: a.call() except E: # get exception value in a python2/3 portable way a = sys.exc_info()[1] Every time … [View More]

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Status of the Buildbot fleet and related bugs
by R. David Murray Nov. 15, 2009

Nov. 15, 2009

The buildbot waterfall is much greener now. Thanks to all who have contributed to making it so (and it hasn't just been Mark and Antoine and I, though we've been the most directly active (and yes, Mark, you did contribute several fixes!)). The 'stable builders' fleet is green now except for: (1) issue 7269: occasional 2.6/trunk bsddb3 failures on windows (2) issue 6748: random 3.1/3.x failures on most buidbots. (3) the klose-debian-ppc builder being offline Of these, (2) is … [View More]

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global statements outside functions/methods should raise SyntaxError
by Ezio Melotti Nov. 15, 2009

Nov. 15, 2009

Python currently accepts global statements at the top level: >>> global foo >>> Beside being a meaningless operation, this might lead unexperienced user to make mistakes like: >>> foo = 5 >>> global foo # make foo global >>> def func(): ... print foo # access the global foo ... >>> func() 5 >>> # it works! "global foo" should raise a SyntaxError, similarly to what already happens with "return": >>> return foo File "&… [View More]

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Using itertools in modules that are part of the build chain (Re: [Python-checkins] r76264 - python/branches/py3k/Lib/tokenize.py)
by Nick Coghlan Nov. 15, 2009

Nov. 15, 2009

benjamin.peterson wrote: > Modified: python/branches/py3k/Lib/tokenize.py > ============================================================================== > --- python/branches/py3k/Lib/tokenize.py (original) > +++ python/branches/py3k/Lib/tokenize.py Sat Nov 14 17:27:26 2009 > @@ -377,17 +377,12 @@ > The first token sequence will always be an ENCODING token > which tells you which encoding was used to decode the bytes stream. > """ > + # This import … [View More]

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Modules that run other scripts
by Nick Coghlan Nov. 15, 2009

Nov. 15, 2009

I'm in the process of adding a "run_path" function to the runpy module that allows Python code to execute scripts using the same rules as the CPython command line (i.e. accepting both source and compiled Python files in addition to zipfiles, directories and other valid sys.path entries containing a __main__.py file). After that I was considering looking at the standard library to see which modules can be used to execute other scripts (e.g. pdb, profile) and determine what would be involved in … [View More]

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Re: [Python-Dev] PyPI front page
by P.J. Eby Nov. 14, 2009

Nov. 14, 2009

At 08:33 PM 11/12/2009 -0500, Ian Bicking wrote: >On Thu, Nov 12, 2009 at 7:52 PM, Antoine Pitrou ><<mailto:solipsis@pitrou.net>solipsis(a)pitrou.net> wrote: >Ben Finney <ben+python <at> <http://benfinney.id.au>benfinney.id.au> writes: > > > > There's a problem with the poll's placement: on the front page of the > > PyPI website. > >Speaking of which, why is it that ><http://pypi.python.org/pypi>http://pypi.python.org/… [View More]

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