python-dev@python.org discussions for September 2013

90	[Python-Dev] PEP 455: TransformDict

Hello, Following the python-dev discussion, I've written a PEP to recap the proposal and the various arguments. It's inlined below, and it will probably appear soon at ...

Antoine Pitrou
Sep 13, 2013 at 6:40 pm
Oct 9, 2013 at 9:34 pm

86	[Python-Dev] Add a "transformdict" to collections

Hello, In http://bugs.python.org/issue18986 I proposed adding a new mapping type to the collections module. The original use case is quite common in network programming and elsewhere (Eric Snow on ...

Antoine Pitrou
Sep 10, 2013 at 9:28 am
Sep 12, 2013 at 9:34 pm

64	[Python-Dev] Offtopic: OpenID Providers

I just received an email from my OpenID provider, "myOpenID", saying that they drop OpenID service next February. I wonder what other OpenID providers are used by other python-dev fellows. What are ...

Jesus Cea
Sep 5, 2013 at 5:31 pm
Sep 10, 2013 at 4:03 pm

61	[Python-Dev] Best practice for documentation for std lib

Hi all, I have a question about how I should manage documentation for the statistics module for Python 3.4. At the moment, I have extensive docstrings in the module itself. I don't believe anyone has ...

Steven D'Aprano
Sep 22, 2013 at 3:13 am
Sep 28, 2013 at 8:19 pm

60	[Python-Dev] PEP 453 (pip bootstrapping) ready for pronouncement?

With the last round of updates, I believe PEP 453 is ready for Martin's pronouncement. HTML: http://www.python.org/dev/peps/pep-0453/ Major diffs: http://hg.python.org/peps/rev/b2993450b32a Many of ...

Nick Coghlan
Sep 23, 2013 at 11:15 am
Sep 28, 2013 at 2:38 pm

48	[Python-Dev] Revert #12085 fix for __del__ attribute error message

When an AttributeError is raised in a __del__ method, it is caught and ignored, except that it is not completely ignored but is replaced by a warning message sent to stderr. Example: def ...

Terry Reedy
Sep 21, 2013 at 9:16 pm
Sep 26, 2013 at 7:51 pm

22	[Python-Dev] Compiler for the Mac OS X version of Python 3.4

I was exercising the alpha two release of 3.4 and noticed that it is still being built under GCC 4.2.1. Is there any reason we have to use an old compiler? I would like to see it built under the ...

Raymond Hettinger
Sep 14, 2013 at 7:44 pm
Sep 19, 2013 at 4:43 am

19	[Python-Dev] DTRACE support

As far as I know, Erlang, Ruby, PHP, Perl, etc., support Dtrace. Python is embarrasingly missing from this list. Some examples ...

Jesus Cea
Sep 6, 2013 at 3:08 pm
Sep 9, 2013 at 11:38 am

17	[Python-Dev] asdl.py and Python-ast.[hc]

Hi All, Earlier this morning I had a slight tackle with a couple of the 3.4 bots (sorry everyone!). I fixed some problems in asdl.py - http://hg.python.org/cpython/rev/21d46e3ae60c - and used the ...

Eli Bendersky
Sep 26, 2013 at 1:52 pm
Sep 27, 2013 at 3:26 pm

15	[Python-Dev] Getting Tulip (PEP 3156) into the 3.4 stdlib, marked provisional, named asyncio

I've been looking at my progress with Tulip and the 3.4 release schedule (PEP 429) and it looks like I will have to do some kind of sprint to get it into the release in time for beta 1, which is ...

Guido van Rossum
Sep 27, 2013 at 10:33 pm
Sep 30, 2013 at 12:57 am

15	[Python-Dev] Enum Eccentricities

http://bugs.python.org/issue19011 So, as anyone who has worked with Enum is probably aware by now, Enum's are a strange duck -- you might even call them platypuses. For example, Enum members are ...

Ethan Furman
Sep 22, 2013 at 11:52 pm
Sep 23, 2013 at 11:25 pm

15	[Python-Dev] sys.intern should work on bytes

""" sys.intern(b'12121212') Traceback (most recent call last): File "<stdin ", line 1, in <module TypeError: must be str, not bytes """ I wonder why. - -- Jes?s Cea Avi?n _/_/ _/_/_/ _/_/_/ jcea at ...

Jesus Cea
Sep 20, 2013 at 11:19 am
Sep 23, 2013 at 8:03 am

15	[Python-Dev] PEP 428: Pathlib

I see PEP 428 is both targeted at 3.4 and still in draft status. What remains to be done to ask for pronouncement? -- ~Ethan~

Ethan Furman
Sep 15, 2013 at 1:46 pm
Sep 18, 2013 at 8:26 am

14	[Python-Dev] Use an empty def as a lambda

I think the lambda keyword is difficult to understand for many people. It would be more pythonic to use an empty def call instead. For instance this: words.sort(key = lambda x: x[2]) could look like ...

Ben Gift
Sep 19, 2013 at 8:54 pm
Sep 22, 2013 at 2:49 am

14	[Python-Dev] PEP 453 Round 4 - Explicit bootstrapping of pip in Python installations

We've updated PEP453 based on some of the early feedback we've gotten from -dev and Martin. Major changes: * Removal of the option to fetch pip from PyPI in order not to modify the trust model of the ...

Donald Stufft
Sep 19, 2013 at 1:27 pm
Sep 19, 2013 at 2:15 pm

14	[Python-Dev] windows file closing race condition?

Hi All, Continuous testing is a wonderful thing when it comes to finding weird edge case problems, like this one ...

Chris Withers
Sep 6, 2013 at 5:50 am
Sep 6, 2013 at 2:01 pm

13	[Python-Dev] License() release list is imcomplete; intentional?

On 2.7, license() return a text that includes a complete list of releases from 1.6 to 2.7 and stops there Release Derived Year Owner GPL- from compatible? (1) 0.9.0 thru 1.2 1991-1995 CWI yes 1.3 ...

Terry Reedy
Sep 17, 2013 at 3:37 pm
Sep 19, 2013 at 1:01 am

12	[Python-Dev] Completing the email6 API changes.

My idea was to encode as much of the current known rules as as we have the stomach for, and to have a validation flag that you turn on if you want to check your message against those standards. But ...

R. David Murray
Sep 1, 2013 at 4:28 pm
Sep 4, 2013 at 1:30 am

11	[Python-Dev] Need testing audio files

I work on enhancement of audio modules testing [1], and I need free (in both senses) small sample audio files in different formats. We already have audiotest.au (mono, and sunau has a bug in ...

Serhiy Storchaka
Sep 11, 2013 at 10:09 am
Sep 11, 2013 at 11:12 pm

10	[Python-Dev] unicodedata module is out of date

The unicodedata module only contains data up to Unicode 5.2 (October 2009), so attempting to reference any character from a later version e.g: unicodedata.lookup("TURKISH LIRA SIGN") results in a ...

Andrew Miller
Sep 6, 2013 at 9:54 am
Sep 9, 2013 at 11:43 am

9	[Python-Dev] SEEK_* constants in io and os

Hello, I was looking at the possibility of replacing the SEEK_* constants by IntEnums, and the first thing that catches attention is that these constants are defined in both Lib/os.py and Lib/io.py ...

Eli Bendersky
Sep 2, 2013 at 1:02 am
Sep 6, 2013 at 2:23 pm

8	[Python-Dev] Why not support user defined operator overloading ?

Hello: As far as I know, there is not a language support user defined operator overloading. Python3 can overloading belowed operators. - negated + unchanged - minus + add * multiplication / division ...

张佩佩
Sep 29, 2013 at 12:51 pm
Sep 30, 2013 at 1:02 am

8	[Python-Dev] [RELEASED] Python 3.4.0a2

On behalf of the Python development team, I'm chuffed to announce the second alpha release of Python 3.4. This is a preview release, and its use is not recommended for production settings. Python 3.4 ...

Larry Hastings
Sep 9, 2013 at 12:02 pm
Sep 10, 2013 at 3:26 pm

8	[Python-Dev] inspect and metaclasses

Part of the fix for issue #18693 is to fix inspect to look in the metaclass for class attributes (http://bugs.python.org/issue18929). In inspect.py in function get_mro() we can either add the ...

Ethan Furman
Sep 6, 2013 at 1:32 pm
Sep 6, 2013 at 6:34 pm

7	[Python-Dev] RFC: PEP 454: Add a new tracemalloc module

Hi, Antoine Pitrou suggested me to write a PEP to discuss the API of the new tracemalloc module that I proposed to add to Python 3.4. Here you have. If you prefer to read the HTML version ...

Victor Stinner
Sep 3, 2013 at 11:27 pm
Sep 8, 2013 at 11:05 pm

5	[Python-Dev] astgen.py vs. ASDL for ASTs

Hello, Some history (as best as I could collect it) followed by a question: Before Python 2.5, the ast stdlib module was auto generated by a script named astgen.py from a textual AST definition in ...

Eli Bendersky
Sep 25, 2013 at 1:15 pm
Sep 25, 2013 at 1:36 pm

4	[Python-Dev] when to fix cross-version bugs?

I recently committed a fix for unicodeobject.c so that the %d, %i, and %u format specifiers always output values (otherwise, in subclasses, the str() was used instead). Should this be fixed in 3.3 as ...

Ethan Furman
Sep 6, 2013 at 2:51 pm
Sep 7, 2013 at 11:01 am

3	[Python-Dev] toolbar

Hi, I just downloaded Python 3.3 top teach myself how to program, I am new to programming, but the guide I am using requires me to access the toolbar, which I cannot seem to find. How do I find it ...

Kevin Ngugi
Sep 28, 2013 at 11:28 am
Sep 28, 2013 at 5:42 pm

3	[Python-Dev] Summary of Python tracker Issues

ACTIVITY SUMMARY (2013-08-30 - 2013-09-06) 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 ...

Python tracker
Sep 6, 2013 at 4:07 pm
Sep 27, 2013 at 4:07 pm

3	[Python-Dev] PEP 453: Explicit bootstrapping of pip

After a couple of rounds of review on distutils-sig, and with Martin agreeing to serve as BDFL-Delegate, it's time for the pip bootstrapping proposal to run the gauntlet of python-dev :) The last ...

Nick Coghlan
Sep 17, 2013 at 2:46 pm
Sep 17, 2013 at 6:52 pm

3	[Python-Dev] Details of "import lock" in 3.3

With importlib and other recent changes, what are the current details of "import lock"?. That is, the lock/locks held when Python code does "import", specially in the case of multithreading. Is that ...

Jesus Cea
Sep 6, 2013 at 3:08 pm
Sep 6, 2013 at 5:06 pm

2	[Python-Dev] IOCP (I/O Completion Port) in Python ?

Hello: I wondering why there is no standard IOCP module in Python ? As I know: Python3 have support epoll in linux and kqueue in freebsd. Is there a plan to add IOCP module for Windows ? Regards! ...

张佩佩
Sep 10, 2013 at 10:58 am
Sep 10, 2013 at 5:09 pm

2	[Python-Dev] [Python-checkins] cpython: Post-3.4.0a2-release fixups.

I had already pushed alpha 3 entries in NEWS, so something seems to have gone wrong here. Perhaps, if RMs are preparing the release out of tree, we could get the NEWS file headings on default updated ...

Nick Coghlan
Sep 9, 2013 at 2:20 pm
Sep 9, 2013 at 4:12 pm

2	[Python-Dev] cpython (merge 3.3 -> default): Merge fix from 3.3 into default.

Probably because they don't have the hgeol extension enabled. Regards Antoine.

Antoine Pitrou
Sep 1, 2013 at 9:04 pm
Sep 2, 2013 at 1:08 am

1	[Python-Dev] 2.6.9rc1

Just a quick reminder that I intend to cut 2.6.9rc1 tomorrow. Here are the open issues still on my list: - 16040 - nntplib: unlimited readline() from connection This one is waiting for a patch, but ...

Barry Warsaw
Sep 29, 2013 at 6:11 pm
Sep 29, 2013 at 7:59 pm

1	[Python-Dev] cpython: Don't use fancy new Python features like 'with' - some bots don't have them

The open call needs to go outside the try-finally. cheers, Georg

Georg Brandl
Sep 26, 2013 at 4:07 pm
Sep 26, 2013 at 4:36 pm

1	[Python-Dev] Installing python27-devel on Centos5.8 running python2.4

Hi All I need help in installing python development packages (python27-devel) on Centos5.8. Upgrading hardware is not an option as of now. I've installed python2.7 in the same machine by $ wget ...

Alok bhan
Sep 25, 2013 at 8:07 am
Sep 25, 2013 at 4:17 pm

1	[Python-Dev] [Python-checkins] cpython (2.6): #14984: only import pwd on POSIX.

On Sep 18, 2013, at 03:00 PM, r.david.murray wrote: Would it make more sense to do: try: import pwd except ImportError: pwd = None ?

Barry Warsaw
Sep 19, 2013 at 1:38 am
Sep 19, 2013 at 4:09 am

1	[Python-Dev] benchmark

A non-text attachment was scrubbed... Name: benchmark.patch Type: application/octet-stream Size: 36048 bytes Desc: not available URL ...

Victor Stinner
Sep 17, 2013 at 11:17 pm
Sep 18, 2013 at 8:14 am

1	[Python-Dev] PEP 454: add a new tracemalloc module (second round)

Hi, Thanks to the early remarks on the PEP 454, I redesigned and enhanced the API of the new tracemalloc module. Changes: * it is now possibility to record more than 1 frame per memory allocation * ...

Victor Stinner
Sep 16, 2013 at 11:47 pm
Sep 17, 2013 at 10:36 am

1	[Python-Dev] TransformDict (PEP 455) Naming

Does anybody know if http://vote.python.org is already operational? I decided to start a separate thread for TransformDict name, because I want to change it. Current implementation of PEP 455 only ...

Anatoly techtonik
Sep 16, 2013 at 6:28 am
Sep 16, 2013 at 3:31 pm

1	[Python-Dev] PEP 422: Simpler customisation of class creation

Three questions: Would the new __initclass__ function be usable with actual full-blown metaclasses? The PEP says this: Given that statement, and this example: class A: def __initclass__(cls): # do ...

Ethan Furman
Sep 15, 2013 at 2:19 pm
Sep 15, 2013 at 2:40 pm

1	[Python-Dev] cpython: Issue #18571: Implementation of the PEP 446: file descriptors and file handles

"Handle" is used nowhere else in the os module documentation. Do you think it would make sense to have a brief paragraph on what are possible handles under Windows (and that file descriptors aren't ...

Georg Brandl
Sep 15, 2013 at 8:34 am
Sep 15, 2013 at 2:04 pm

1	[Python-Dev] importance of dir

http://docs.python.org/3/library/functions.html#dir: I suspect this comment is out of date, as there are two functions in the inspect module that rely on dir(), which also means that help indirectly ...

Ethan Furman
Sep 11, 2013 at 2:04 pm
Sep 11, 2013 at 3:17 pm

1	[Python-Dev] cpython: Issue #18904: test_socket: add inheritance tests using fcntl and FD_CLOEXEC

The right way to do this would be to skip the test if fcntl doesn't exist. Regards Antoine.

Antoine Pitrou
Sep 8, 2013 at 11:23 am
Sep 8, 2013 at 1:38 pm

1	[Python-Dev] metaclasses, classes, instances, and proper nomenclature

I've run across two different ways to think about this: 1) the type of the first argument 2) where the method/attribute lives Since attributes don't take a first argument they default to 2: an ...

Ethan Furman
Sep 8, 2013 at 7:42 am
Sep 8, 2013 at 10:06 am

1	[Python-Dev] Python 2.6 to end support with 2.6.9 in October 2013

Hello Pythonistas, Python 2.6.9 is the last planned release of the 2.6.x series. This will be a security-only source-only release. It is currently scheduled for October 2013, and after this Python ...

Barry Warsaw
Sep 3, 2013 at 6:51 pm
Sep 3, 2013 at 7:53 pm

1	[Python-Dev] [Python-checkins] cpython: Issue #11798: fix tests for regrtest -R :

Hi Andrew, It would help if you could add more details into the commit message. This would make both post-commit reviews and future code archeology simpler. Eli An HTML attachment was scrubbed.. ...

Eli Bendersky
Sep 1, 2013 at 10:58 pm
Sep 2, 2013 at 2:37 am

1	[Python-Dev] [Python-checkins] cpython: Update whatsnew/3.4.rst wrt. the socket constants switch to IntEnum

Oops, yes. Sorry about that. Eli An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20130901/2c77d9d2/attachment.html

Eli Bendersky
Sep 1, 2013 at 10:59 pm
Sep 1, 2013 at 11:42 pm

0	[Python-Dev] Completed: Google Summer of Code 2013 IDLE Unit Testing and Improvements

In April 2013 we challenged students to not spend their summer idle around the swimming pool but rather spend their time on IDLE and make a difference. IDLE is Python?s Integrated Development ...

Todd V. Rovito
Sep 30, 2013 at 12:39 am
Sep 30, 2013 at 12:39 am

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