Mailman 3 May 2014 - Python-Dev

Status of PEP 3145 - Asynchronous I/O for subprocess.popen
by Antoine Pitrou May 29, 2014

May 29, 2014

Hi, On core-mentorship someone asked about PEP 3145 - Asynchronous I/O for subprocess.popen. I answered that asyncio now has subprocess support (including non-blocking I/O on the three standard stream pipes), so it's not obvious anything else is needed. Should we change the PEP's status to Rejected or Superseded? Regards Antoine.

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[Python-checkins] Daily reference leaks (8391f99208f6): sum=181
by Brett Cannon May 29, 2014

May 29, 2014

I think the memory leak was caused by http://hg.python.org/cpython/rev/7d20e30bd540 because http://hg.python.org/cpython/file/0eedac3d0b0a/Python/import.c#l903 sets the 'res' variable and then overwrites it unconditionally w/o PY_DECREF beforehand. On Thu May 29 2014 at 4:02:17 AM, <solipsis(a)pitrou.net> wrote: > results for 8391f99208f6 on branch "default" > -------------------------------------------- > > test_collections leaked [0, 2, 4] references, sum=6 > … [View More]

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Download Counts (was: Language Summit notes)
by Brian Curtin May 28, 2014

May 28, 2014

On Fri, Apr 18, 2014 at 1:31 PM, Antoine Pitrou <solipsis(a)pitrou.net> wrote: > I don't think we have recent download numbers since the Website > overhaul (do we?), but Python 3 isn't an "experimental concept > language" anymore (it hasn't been since 3.3 or 3.2, I'd say). Using the old logs, which are still good through 2013, I've found the following: The first year of a release series (month of final release month + 12mos): 2.6.x - 10.3 Million 2.7.x - 10.26M 3.2.x - 5.84M 3.… [View More]

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Re: [Python-Dev] cpython: Minor clean-ups for heapq.
by Serhiy Storchaka May 27, 2014

May 27, 2014

26.05.14 10:59, raymond.hettinger написав(ла): > + result = [(elem, i) for i, elem in zip(range(n), it)] Perhaps it is worth to add simple comment explaining why this is not equivalent to just list(zip(it, range(n))). Otherwise it can be unintentionally "optimized" in future.

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Commit-ready patches in need of review
by Nikolaus Rath May 24, 2014

May 24, 2014

Hello, While my last appeal resulted in quite some commits (thanks!), I still have some more commit-ready patches waiting for review. It'd be great if some people could find time to take a look: * http://bugs.python.org/issue1738 (filecmp.dircmp does exact match only) Reviewed patch, rebased on current hg tip * http://bugs.python.org/issue20177 (Derby #8: Convert 28 sites to Argument Clinic across 2 files) I only wrote the patch for one file because I'd like to have feedback … [View More]

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[RELEASED] Python 3.4.1
by Larry Hastings May 24, 2014

May 24, 2014

On behalf of the Python development community and the Python 3.4 release team, I'm pleased to announce the availability of Python 3.4.1. Python 3.4.1 has over three hundred bugfixes and other improvements over 3.4.0. One notable change: the version of OpenSSL bundled with the Windows installer no longer has the "HeartBleed" vulnerability. You can download it here: https://www.python.org/download/releases/3.4.1 //arry/

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Re: [Python-Dev] [RELEASED] Python 3.4.1
by Herbert Griebel May 24, 2014

May 24, 2014

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Summary of Python tracker Issues
by Python tracker May 23, 2014

May 23, 2014

ACTIVITY SUMMARY (2014-05-16 - 2014-05-23) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 4622 ( +8) closed 28710 (+36) total 33332 (+44) Open issues with patches: 2129 Issues opened (26) ================== #21518: Expose RegUnloadKey in winreg http://bugs.python.org/issue21518 opened by Claudiu.Popa #21519: IDLE : Bug in keybinding validity … [View More]

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Unexpected increase of globals() refcount
by Chandra Srinivasan May 23, 2014

May 23, 2014

Hi, I ran the following code in the Python interpreter and am trying to determine if the behavior I see is expected: import sys print sys.getrefcount(globals()) class Foo(object): def __init__(self): pass print sys.getrefcount(globals()) The first print statement above prints '4' and the second one prints '5'. However, if I remove the __init__ method from the class, the refcount stays the same. If I change the above code like this, the ref count stays the same: import gc import sys … [View More]

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Returning None from methods that mutate object state
by Nick Coghlan May 21, 2014

May 21, 2014

During a conversation today, I realised that the convention of returning None from methods that change an object's state isn't captured the Programming Recommendations section of PEP 8. Specifically, I'm referring to this behaviour: >>> [].sort() is None True >>> "ABC".lower() is None False That's a deliberate design choice, and one that has been explained a few times on the list when folks ask why "[].sort().reverse()" doesn't work when "'ABC'.lower().replace('-', '_')" … [View More]

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