python-dev Google Group

[Python-Dev] Async subprocesses on Windows with tulip

2013-05-19T15:59:52Z

Attached is a pretty trivial example of asynchronous interaction with a
python subprocess using tulip on Windows. It does not use transports or
protocols -- instead sock_recv() and sock_sendall() are used inside tasks.

I am not sure what the plan is for dealing with subprocesses currently.

[Python-Dev] Ordering keyword dicts

2013-05-19T05:47:35Z

On Sat, May 18, 2013 at 10:27 PM, Raymond Hettinger

I'm slow at warming up to the idea. My main concern is speed -- since
most code doesn't need it and function calls are already slow (and
obviously very common :-) it would be a shame if this slowed down
function calls that don't need it noticeably.

Re: [Python-Dev] cpython: Use PY_FORMAT_SIZE_T because Visual Studio does not understand %zd format.

2013-05-18T20:00:58Z

18.05.13 19:37, richard.oudkerk написав(ла):
See also DEBUG_PRINT_FORMAT_SPEC() in Python/formatter_unicode.c,
_PyDebugAllocatorStats() in Objects/obmalloc.c, and kqueue_event_repr()
in Modules/selectmodule.c.
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Re: [Python-Dev] cpython: Undo the deprecation of _asdict().

2013-05-18T19:48:26Z

18.05.13 10:06, raymond.hettinger написав(ла):
Why?
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[Python-Dev] PEP 442: Safe object finalization

2013-05-18T08:59:10Z

Hello,

I would like to submit the following PEP for discussion and evaluation.

Regards

Antoine.

PEP: 442
Title: Safe object finalization
Version: $Revision$
Last-Modified: $Date$
Author: Antoine Pitrou <solip...@pitrou.net>
Status: Draft
Type: Standards Track
Content-Type: text/x-rst

[Python-Dev] Summary of Python tracker Issues

2013-05-17T16:07:32Z

ACTIVITY SUMMARY (2013-05-10 - 2013-05-17)
Python tracker at [link]

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 3966 ( +3)
closed 25805 (+47)
total 29771 (+50)

Open issues with patches: 1776

[Python-Dev] HAVE_FSTAT?

2013-05-17T13:01:19Z

Hello,

Some pieces of code are still guarded by:
...

I would expect all systems to have fstat() these days. It's pretty
basic POSIX, and even Windows has had it for ages. Shouldn't we simply
make those code blocks unconditional? It would avoid having to maintain
unused fallback paths.

Re: [Python-Dev] [Python-checkins] cpython: fix compilation on Windows

2013-05-17T00:31:50Z

That fixed my problem with compiling 3.4, 32 bit, Win 7. Thanks.

But I cannot compile 3.3 python_d since May 6. In fact, there are more
errors now than 8 hours ago.
7 things failed to build instead of 5 (3 is normal for me, given the
lack of some dependencies).
I believe the following is new.

[Python-Dev] Why is nb_inplace_add copied to sq_inplace_concat?

2013-05-16T23:17:20Z

I have encountered what I believe to be a bug but I'm sure there is some
reason things are done as they are and I am hoping someone can shed some light
or confirm it is indeed a bug.

As a bit of background I have a c++ class that I use sip to generate python
bindings. The potential python bug manifests itself as:

[Python-Dev] [RELEASED] Python 3.2.5 and Python 3.3.2

2013-05-16T05:20:30Z

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On behalf of the Python development team, I am pleased to announce the
releases of Python 3.2.5 and 3.3.2.

The releases fix a few regressions in 3.2.4 and 3.3.1 in the zipfile, gzip
and xml.sax modules. Details can be found in the changelogs:

[Python-Dev] [RELEASED] Python 2.7.5

2013-05-16T04:19:06Z

It is my greatest pleasure to announce the release of Python 2.7.5.

2.7.5 is the latest maintenance release in the Python 2.7 series. You may be
surprised to hear from me so soon, as Python 2.7.4 was released slightly more
than a month ago. As it turns out, 2.7.4 had several regressions and
incompatibilities with 2.7.3. Among them were regressions in the zipfile, gzip,

[Python-Dev] Mysterious Python pyc file corruption problems

2013-05-15T20:58:08Z

I am looking into a particularly vexing Python problem on Ubuntu that
manifests in several different ways. I think the problem is the same one
described in [link] and I sent a message on the
subject to the ubuntu-devel list:
[link]

[Python-Dev] Pickling failure on Enums

2013-05-14T20:09:16Z

I can get pickle failure on members created using the functional syntax with no module set; I cannot get pickle failure
on those same classes; I cannot get pickle failure on class syntax enums that inherit complex types (such as the NEI
class in the tests).

If anybody has any insight on how to make that work, I'm all ears.

[Python-Dev] First post

2013-05-14T15:22:05Z

Hi guys! This is my first post on this list.

I'd like have your opinion on how to safely implement WSGI on a production server.

My benchmarks show no performance differences between our PHP and Python environments. I'm using mod_wsgi v3.4 with Apache 2.4.

Is that ok or can it get faster?

[Python-Dev] How to debug python crashes

2013-05-14T12:32:27Z

Hi,

I have a reproducable crash on Windows XP with Python 2.7 which I would
like to investigate. I have Visual Studio 2008 installed and I
downloaded the pdb files. However I could not find any instructions on
how to use them and was unsuccessful at getting anything out of it.

I checked the developer guide but could not find anything on debugging

[Python-Dev] weak refs in descriptors (http://bugs.python.org/issue17950)

2013-05-13T11:49:29Z

Hello python-dev.
I'm working on a patch to remove reference cycles from heap-allocated classes: [link]
Part of the patch involves making sure that descriptors in the class dictionary don't contain strong references to the class itself.
This is item 2) in the defect description.

[Python-Dev] Best practices for Enum

2013-05-12T23:49:44Z

After the long design effort for the enum module,
I'm sure there will be a forthcoming effort to apply
them pervasively throughout the standard library.

I would like to ask for a little restraint and for there to
be individual cost/benefit evaluations for each case.

On the plus-side, the new integer-enums have a better

[Python-Dev] 2.7.5 baking

2013-05-12T04:03:18Z

The long anticipated "emergency" 2.7.5 release has now been tagged. It
will be publicly announced as binaries arrive.

Originally, I was just going to cherrypick regression fixes onto the
2.7.4 release and release those as 2.7.5. I started to this but ran
into some conflicts. Since we don't have buildbot testing of release

[Python-Dev] make a Windows installation package (.msi) for Python 3.3

2013-05-10T17:31:39Z

To Python Windows Release Managers:

My name is Jianfeng Mao and I am a software developer at the U2 group in Rocket Software ([link]). I am currently working on a project to embed a slightly customized Python interpreter in our product. For easy installation and setup, we hope to be able to do the standard Python installation during the installation of our software. Basically I want to create a .msi file that can be called to install the full Python if the user needs this new feature. Brian Curtin (br...@python.org<mailto:br... @python.org>) pointed me to Tools/msi/msi.py for the Windows MSI builder. I tried to follow the instructions in the README but couldn't make it to work after a few twists and turns. Brian mentioned that few people needs to do this and only release managers handle the packaging of Python. I have listed the steps I have done in my attempt to create the .msi file. Please let me know if I have missed anything or done anything wrong.

[Python-Dev] Summary of Python tracker Issues

2013-05-10T16:07:34Z

ACTIVITY SUMMARY (2013-05-03 - 2013-05-10)
Python tracker at [link]

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 3963 (+10)
closed 25758 (+44)
total 29721 (+54)

Open issues with patches: 1774

[Python-Dev] Issue 11406: adding os.scandir(), a directory iterator returning stat-like info

2013-05-10T10:55:56Z

A few of us were having a discussion at
[link] about adding os.scandir(): a
generator version of os.listdir() to make iterating over very large
directories more memory efficient. This also reflects how the OS gives
things to you -- it doesn't give you a big list, but you call a

[Python-Dev] PEP 0 maintenance - deferring some currently open PEPs

2013-05-10T07:14:21Z

I'd like to mark a few PEPs that are not currently being actively
considered for 3.4 as Deferred:

S 286 Enhanced Argument Tuples von Löwis
S 337 Logging Usage in the Standard Library Dubner
S 368 Standard image protocol and class Mastrodomenico

[Python-Dev] Help requested for issue 9285 (profile.py)

2013-05-10T00:01:40Z

[link]
I'm stuck as I really have no clue what that error means.
Any help from someone experienced with profile.py code is welcome.

--- Giampaolo
[link]
[link]
[link]
______________________________ _________________

[Python-Dev] PEP 435 (Enums) is Accepted

2013-05-09T23:01:15Z

I have reviewed the latest version of PEP 435 and I see that it is
very good. I hereby declare PEP 435 as Accepted. Congratulations go to
Barry, Eli and Ethan for pulling it through one of the most thorough
reviewing and bikeshedding processes any PEP has seen. Thanks to
everyone else for the many review comments. It is a better PEP because

[Python-Dev] I want contribute to the project

2013-05-09T19:58:02Z

Hi guys,

I have 3 computer and want to contribute to the project,

Windows 7, Interl I5 64bits
Ubuntu 13.04, Interl I5 32bits
Ubuntu 13.04, Interl I5 64bits

How i can proceed? I'm nice in this world of free software and python

best regards

Diego Tolentino
SENIOR DEVELOPER
Skype: diegotolentino

[Python-Dev] Any script to create the installation pacakge of Python 3.3.1 on Windows and *NIX?

2013-05-09T00:37:43Z

To Python-Dev committers:

I am working on a project to embed a slightly customized Python interpreter in our own software. For easy installation and setup, we want to be able to do the standard Python installation as part of the installation of our product. So far I have successfully customized and built Python 3.3.1 (including the subprojects) on Windows but I can't find anything in the source distribution to allow me package the binaries/modules etc into a MSI just like the one on the download page on python.org. So I am asking for information regarding how to package Python build for installation on both Windows and *NIX platforms. Your help will be greatly appreciated.

[Python-Dev] Call for testing: generator finalization

2013-05-08T16:14:59Z

Hello,

In [link] I've committed a patch to allow
generator finalization (execution of "finally" blocks) even when a
generator is part of a reference cycle. If you have some workload
which is known for problems with generator finalization (or otherwise
makes a heavy use of generators), it would nice to have some feedback on

Re: [Python-Dev] this python string literals documentation couldn't explain me: single quote presence inside double quoted string and viceversa. Can Anyone explain me?

2013-05-08T11:31:20Z

I asked this question here,
[link],
. I was advised to ask here

--
Alok Nayak
Gwalior, India

[Python-Dev] PEP 435: pickling enums created with the functional API

2013-05-07T13:34:50Z

One of the contended issues with PEP 435 on which Guido pronounced was the
functional API, that allows created enumerations dynamically in a manner
similar to namedtuple:

Color = Enum('Color', 'red blue green')

The biggest complaint reported against this API is interaction with pickle.
As promised, I want to discuss here how we're going to address this concern.

[Python-Dev] All 3.x stable buildbots are red

2013-05-07T07:34:45Z

[link]

x86 Windows Server 2003 [SB] 3.x: 3 tests failed, test___all__ test_gc test_ssl
x86 Windows7 3.x: 3 tests failed, test___all__ test_gc test_ssl
x86 Gentoo Non-Debug 3.x: 3 tests failed, test_logging
test_multiprocessing test_urllib2net

Re: [Python-Dev] cpython: Issue #11816: multiple improvements to the dis module

2013-05-06T19:17:01Z

On Mon, 6 May 2013 15:59:49 +0200 (CEST)

Looks like you forgot to add bytecode_helper.py.

Regards

Antoine.

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[Python-Dev] Fighting the theoretical randomness of "is" on immutables

2013-05-06T08:46:33Z

Hi all,

In the context PyPy, we've recently seen again the issue of "x is y"
not being well-defined on immutable constants. I've tried to
summarize the issues and possible solutions in a mail to pypy-dev [1]
and got some answers already. Having been convinced that the core is
a language design issue, I'm asking for help from people on this list.

[Python-Dev] PEP 435: initial values must be specified? Yes

2013-05-05T20:09:50Z

No, you are not only one that's bothered by it. I tried it without assignments until I discovered that bugs are way too
easy to introduce. The problem is a successful name lookup looks just like a name failure, but of course no error is
raised and no new enum item is created:
--> class Color(Enum):

[Python-Dev] PEP 435 - ref impl disc 2

2013-05-05T06:31:13Z

So I have a class based on Nick's Named Values, that has been extended
to propagate names into expressions, so that if you have named values
'x' and 'y', when you x + y, the result is a named value whose name is
'(x + y)'.

Seems pretty awkward to integrate this with Enum. Maybe I'm missing

[Python-Dev] PEP 435 - reference implementation discussion

2013-05-05T03:50:25Z

Split off from the PEP 435 - requesting pronouncement thread.

Think I've come up with a system that works for my auto-numbering case
without knowing the internals of enum_type. Patch passes all existing test
cases. The patch does two things:

1. Finds the first non-Enum class on the MRO of the new class and uses that

[Python-Dev] CLA link from bugs.python.org

2013-05-05T01:23:00Z

It appears there's no obvious link from bugs.python.org to the contributor
agreement - you need to go via the unintuitive link Foundation ->
Contribution Forms (and from what I've read, you're prompted when you add a
patch to the tracker).

I'd suggest that if the "Contributor Form Received" field is "No" in user

[Python-Dev] PEP 435 - requesting pronouncement

2013-05-04T22:04:49Z

Hello pydev,

PEP 435 is ready for final review. A lot of the feedback from the last few
weeks of discussions has been incorporated. Naturally, not everything could
go in because some minor (mostly preference-based) issues did not reach a
consensus. We do feel, however, that the end result is better than in the

Re: [Python-Dev] [Python-checkins] cpython: #17115, 17116: Have modules initialize the package and loader

2013-05-04T18:49:16Z

FYI, I'm aware this broke some buildbots and will have a look today to
figure out why.

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[Python-Dev] PEP 379 Python launcher for Windows - behaviour for #!/usr/bin/env python line is wrong

2013-05-03T20:23:07Z

While reviewing the behaviour of Vinay's "distil" installer tool (see
distutils-sig for details, but it's not relevant here) I have found what I
think is a flaw in the behaviour of the py.exe launcher for Windows.

To recap for people unfamiliar with the launcher, it emulates #! line
interpretation on Windows, interpreting commonly used forms from Unix and

[Python-Dev] Summary of Python tracker Issues

2013-05-03T16:07:23Z

ACTIVITY SUMMARY (2013-04-26 - 2013-05-03)
Python tracker at [link]

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 3953 ( +4)
closed 25714 (+40)
total 29667 (+44)

Open issues with patches: 1773

[Python-Dev] Tightening up the specification for locals()

2013-05-03T01:29:56Z

An exchange in one of the enum threads prompted me to write down
something I've occasionally thought about regarding locals(): it is
currently severely underspecified, and I'd like to make the current
CPython behaviour part of the language/library specification. (We
recently found a bug in the interaction between the __prepare__ method

Re: [Python-Dev] [Python-checkins] peps: Add time(), call_at(). Remove call_repeatedly(). Get rid of add_*_handler()

2013-05-02T22:57:43Z

add_*_handler() return value.

Should the PEP allow event loops that use decimal.Decimal?

(approximately)

It may be worth explicitly noting the time scales where floating point's
dynamic range starts to significantly limit granularity.

Cheers,
Nick.

[Python-Dev] PyPy, Jython, & IronPython: Enum convenience function and pickleablity

2013-05-02T19:07:15Z

In order for the Enum convenience function to be pickleable, we have this line of code in the metaclass:

enum_class.__module__ = sys._getframe(1).f_globals['__ name__']

This works fine for Cpython, but what about the others?

--
~Ethan~
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[Python-Dev] Enum: subclassing?

2013-05-01T17:21:30Z

We may not want to /completely/ disallow subclassing. Consider:

--> class StrEnum(str, Enum):
... '''string enums for Business Basic variable names'''
...
--> class Vendors(StrEnum):
EnumError: subclassing not allowed

My point is that IntEnum, StrEnum, ListEnum, FloatEnum are all "subclasses" of Enum. To then have a subclass of

[Python-Dev] PEP 428: stat caching undesirable?

2013-05-01T07:32:28Z

Hi all,

I write as a python lover for over 13 years who's always wanted
something like PEP 428 in Python.

I am concerned about the caching of stat() results as currently defined
in the PEP. This means that all behaviour built on top of stat(), such
as p.is_dir(), p.is_file(), p.st_size and the like can indefinitely hold

[Python-Dev] Biggest Fake Conference in Computer Science

2013-04-30T23:26:03Z

Biggest Fake Conference in Computer Science
We are researchers from different parts of the world and conducted a study on the world’s biggest
bogus computer science conference WORLDCOMP [link]
organized by Prof. Hamid Arabnia from University of Georgia, USA.
We submitted a fake paper to WORLDCOMP 2011 and again (the same paper with a modified title) to

[Python-Dev] PEP-435 reference implementation

2013-04-30T20:12:05Z

Greetings,

Eli asked me to put the reference implementation here for review.

It is available at [link] in ref435.py and test_ref435.py

--
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[Python-Dev] Getting a list of registered codecs

2013-04-30T09:15:58Z

Before I raise a bug for this, can someone confirm if I've simply missed
something? I don't see any way, either in the docs or in the helpstrings
from the codecs, of listing the codecs that have been registered.

FWIW, I picked this up when I was looking at writing a simple encoding
converter, and I wanted to add a flag to list what conversions were

[Python-Dev] Regression fix releases coming

2013-04-30T07:06:26Z

Hi all,

since there turned out to be a "critical mass" of regressions in 2.7.4/
3.2.4/3.3.1, Benjamin and I would like to release a releasing fixing these
next weekend.

Since we would like to cherry-pick only regression fixes into these releases,
please make sure any regression issues you know of are set to "open" (even if

[Python-Dev] enum instances

2013-04-30T01:23:06Z

First of all, hi, I'm new to this list.

Following the enum discussions on this list I am kind of confused about
how enums and their respective instances, i.e. the values, should behave
in "normal" context.
I apologize beforehand for the mass of "questions" because the following
contains really many discussed things but they all kinda depend on one

python-dev Google Group

[Python-Dev] Async subprocesses on Windows with tulip

[Python-Dev] Ordering keyword dicts

Re: [Python-Dev] cpython: Use PY_FORMAT_SIZE_T because Visual Studio does not understand %zd format.

Re: [Python-Dev] cpython: Undo the deprecation of _asdict().

[Python-Dev] PEP 442: Safe object finalization

[Python-Dev] Summary of Python tracker Issues

[Python-Dev] HAVE_FSTAT?

Re: [Python-Dev] [Python-checkins] cpython: fix compilation on Windows

[Python-Dev] Why is nb_inplace_add copied to sq_inplace_concat?

[Python-Dev] [RELEASED] Python 3.2.5 and Python 3.3.2

[Python-Dev] [RELEASED] Python 2.7.5

[Python-Dev] Mysterious Python pyc file corruption problems

[Python-Dev] Pickling failure on Enums

[Python-Dev] First post

[Python-Dev] How to debug python crashes

[Python-Dev] weak refs in descriptors (http://bugs.python.org/issue17950)

[Python-Dev] Best practices for Enum

[Python-Dev] 2.7.5 baking

[Python-Dev] make a Windows installation package (.msi) for Python 3.3

[Python-Dev] Summary of Python tracker Issues

[Python-Dev] Issue 11406: adding os.scandir(), a directory iterator returning stat-like info

[Python-Dev] PEP 0 maintenance - deferring some currently open PEPs

[Python-Dev] Help requested for issue 9285 (profile.py)

[Python-Dev] PEP 435 (Enums) is Accepted

[Python-Dev] I want contribute to the project

[Python-Dev] Any script to create the installation pacakge of Python 3.3.1 on Windows and *NIX?

[Python-Dev] Call for testing: generator finalization

Re: [Python-Dev] this python string literals documentation couldn't explain me: single quote presence inside double quoted string and viceversa. Can Anyone explain me?

[Python-Dev] PEP 435: pickling enums created with the functional API

[Python-Dev] All 3.x stable buildbots are red

Re: [Python-Dev] cpython: Issue #11816: multiple improvements to the dis module

[Python-Dev] Fighting the theoretical randomness of "is" on immutables

[Python-Dev] PEP 435: initial values must be specified? Yes

[Python-Dev] PEP 435 - ref impl disc 2

[Python-Dev] PEP 435 - reference implementation discussion

[Python-Dev] CLA link from bugs.python.org

[Python-Dev] PEP 435 - requesting pronouncement

Re: [Python-Dev] [Python-checkins] cpython: #17115, 17116: Have modules initialize the __package__ and __loader__

[Python-Dev] PEP 379 Python launcher for Windows - behaviour for #!/usr/bin/env python line is wrong

[Python-Dev] Summary of Python tracker Issues

[Python-Dev] Tightening up the specification for locals()

Re: [Python-Dev] [Python-checkins] peps: Add time(), call_at(). Remove call_repeatedly(). Get rid of add_*_handler()

[Python-Dev] PyPy, Jython, & IronPython: Enum convenience function and pickleablity

[Python-Dev] Enum: subclassing?

[Python-Dev] PEP 428: stat caching undesirable?

[Python-Dev] Biggest Fake Conference in Computer Science

[Python-Dev] PEP-435 reference implementation

[Python-Dev] Getting a list of registered codecs

[Python-Dev] Regression fix releases coming

[Python-Dev] enum instances

Re: [Python-Dev] [Python-checkins] cpython: #17115, 17116: Have modules initialize the package and loader