Mailman 3 October 2012 - Python-Dev

Thread/garbage collection race in Popen
by Ben Leslie Oct. 5, 2012

Oct. 5, 2012

Hi all, I have a Python program where I have many threads each calling Popen, and I was hitting some trouble. I've been seeing this on 3.2.3, however I believe the same issue is still potentially a problem on head. The error manifests itself when a call to os.close(errpipe_read) fails with EBADF ( http://hg.python.org/releasing/3.2.3/file/86d1421a552c/Lib/subprocess.py#l1… ) I believe the root cause of this problem is due to a double close() on a different file descriptor (which is then … [View More]

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Proposed schedule for Python 3.4
by Larry Hastings Oct. 5, 2012

Oct. 5, 2012

Howdy howdy. Unless someone has a better idea, I'm the release manager for Python 3.4. I've roughed out a release schedule, assuming a 16-month period between 3.3 and 3.4. It works out to having 3.4 ship about seven weeks before the PyCon 2014 core dev sprint, so even if we slip some we should still have a fresh 3.5 "default" branch open for some hacking. Here are the dates, note that they're all Saturdays: - 3.4.0 alpha 1: August 3, 2013 - 3.4.0 alpha 2: August 31, 2013 - … [View More]

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what´s new 3.3
by Kristján Valur Jónsson Oct. 5, 2012

Oct. 5, 2012

Hi there. Not having kept up, I realized I failed to contribute to the What's new thingie. Here's stuff I remember working on and putting in: 1. pickling support for built in iterators (#14288) 2. inter process socket duplication for windows (#14310) 3. Progress callback for gc module (#10576) 4. Faster locking on windows (#15038) DiSome of this should probably be mentioned in the What's new document, even if only in its online version. K

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Bootstrap issue: "select" is compiled "too late"
by Jesus Cea Oct. 4, 2012

Oct. 4, 2012

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 <http://buildbot.python.org/all/builders/x86%20OpenIndiana%202.7/builds/1287…> The relevant part: """ ranlib libpython2.7.a gcc -o python \ Modules/python.o \ libpython2.7.a -lsocket -lnsl -ldl -lm Traceback (most recent call last): File "./setup.py", line 8, in <module> from platform import machine as platform_machine File "/export/home/buildbot/32bits/2.7.cea-indiana-x86/build/Lib/platform.py", line 116, in <… [View More]

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Stdlib and timezones, again
by Lennart Regebro Oct. 4, 2012

Oct. 4, 2012

With 3.3 out, it's time to bring up something for 3.4. And it's about pytz and stdlib, basically. And we have been over that again, but I have a proposal anyway. The problem with including pytz in the stdlib is that it contains the tz/zoneinfo/Olson database, and it updates much more often than Python does. I propose to solve this problem in the following way: 1. Merge the functionality of pytz into the stdlib datetime module. That means extending datetime.tzinfo with the localize() function … [View More]

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Using environment variables problematic for embedded python.
by Campbell Barton Oct. 4, 2012

Oct. 4, 2012

Hi, We've run into an issue recently with blender3d on ms-windows where we want to enforce the encoding is UTF-8 with the embedded python interpreter. (the encoding defaults to cp437). I naively thought setting the environment variable before calling Py_Initialize() would work, but the way python DLL loads, it gets its own environment variables that cant be modified directly [1]. eg, _putenv("PYTHONIOENCODING=utf-8:surrogateescape"); We had bug reports by windows users not able to export … [View More]

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experimental: Misc/NEWS included in docs
by Georg Brandl Oct. 2, 2012

Oct. 2, 2012

Hi, at http://docs.python.org/3.3/whatsnew/news.html, there is now a rendering of Misc/NEWS with tracker links and a crude filtering capability. I thought that this will complement the "whatsnew" documents nicely for people looking for more detail. Please let me know if it's useful, or what could be done to make it *more* useful. cheers, Georg

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[RELEASED] Python 3.3.0
by Georg Brandl Oct. 2, 2012

Oct. 2, 2012

On behalf of the Python development team, I'm delighted to announce the Python 3.3.0 final release. Python 3.3 includes a range of improvements of the 3.x series, as well as easier porting between 2.x and 3.x. Major new features and changes in the 3.3 release series are: * PEP 380, syntax for delegating to a subgenerator ("yield from") * PEP 393, flexible string representation (doing away with the distinction between "wide" and "narrow" Unicode builds) * A C implementation of the "… [View More]

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Daily DMG builds
by Antoine Pitrou Oct. 2, 2012

Oct. 2, 2012

Hello, It seems that the daily DMG builds have been failing for some time on the default branch: http://buildbot.python.org/daily-dmg/ Since there has been no report or complaint about that, should we just stop producing those builds? Regards Antoine. -- Software development and contracting: http://pro.pitrou.net

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Re: [Python-Dev] cpython: utilize yield from
by Serhiy Storchaka Oct. 1, 2012

Oct. 1, 2012

On 01.10.12 22:54, philip.jenvey wrote: > http://hg.python.org/cpython/rev/fb90e2ff95b7 > changeset: 79378:fb90e2ff95b7 > user: Philip Jenvey <pjenvey(a)underboss.org> > date: Mon Oct 01 12:53:43 2012 -0700 > summary: > utilize yield from This is not all.

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