Mailman 3 December 2009 - Python-Dev

Issue 3745 backwards incompatibility
by Karen Tracey Dec. 15, 2009

Dec. 15, 2009

In testing some existing code with the 2.7 alpha release, I've run into: TypeError: Unicode-objects must be encoded before hashing when the existing code tries to pass unicode objects to hashlib.sha1 and hashlib.md5. This is, I believe, due to changes made for issue 3745: http://bugs.python.org/issue3745 The issue states the need to reject unencoded strings based on the fact that one backend implementation (openssl) refused to accept them while another (_sha256) assumed a utf-8 … [View More]

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Request commit privileges for Stefan Krah
by Mark Dickinson Dec. 15, 2009

Dec. 15, 2009

I'd like to request that Stefan Krah be granted commit privileges to the Python svn repository, for the sole purpose of working on a (yet to be created) py3k-decimal-in-c branch. Stefan has produced a C library 'libmpdec' implementing (fast!) arbitrary precision decimal arithmetic, together with a Python extension module 'Cdecimal' that provides full compatibility with Python's decimal module. The current version of the code can be found at: http://www.bytereef.org/libmpdec-download.html … [View More]

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Microsoft contributor agreement received?
by Dino Viehland Dec. 15, 2009

Dec. 15, 2009

I'm not sure the best place to verify this so I'm starting here. I'm told we finally faxed in our contributor agreement (to the number listed at http://www.python.org/psf/contrib/) about a week and a half ago. I'd just like to make sure that someone has received it. Is anyone here able to confirm that it went through fine?

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Splitting something into two steps produces different behavior from doing it in one fell swoop in Python 2.6.2
by Roy Hyunjin Han Dec. 14, 2009

Dec. 14, 2009

While debugging a network algorithm in Python 2.6.2, I encountered some strange behavior and was wondering whether it has to do with some sort of code optimization that Python does behind the scenes. ************ After initialization: defaultdict(<type 'set'>, {1: set([1])}) Popping and updating in two steps: defaultdict(<type 'set'>, {1: set([1])}) ************ After initialization: defaultdict(<type 'set'>, {1: set([1])}) Popping and updating in one step: defaultdict(<… [View More]

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Unittest/doctest formatting differences in 2.7a1?
by Lennart Regebro Dec. 13, 2009

Dec. 13, 2009

I just ran the tests for zope.testing on Python 2.7, and the results are not good. It seems that there are multiple minor difference in the output formatting of the testresults between 2.7 and previous 2.x versions. The result is that all the tests that test testing (zope.testing includes a testrunner) fails. Is these changes necessary? It's going to be hell to test any form of testrunner under both 2.6 and 2.7 if the formatting of test results have changed. -- Lennart Regebro: Python, Zope, … [View More]

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Re: [Python-Dev] First draft of "sysconfig"
by Brett Cannon Dec. 13, 2009

Dec. 13, 2009

That's what I meant. [From my phone] On Dec 12, 2009 4:32 PM, "Eric Smith" <eric(a)trueblade.com> wrote: Tarek Ziadé wrote: > > On Sat, Dec 12, 2009 at 10:35 PM, Brett Cannon < brett(a)python.org> wrote: > [.... I don't really understand the complete context, but I think you want str.format(), not string.Formatter here. Eric.

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Backslash at end of raw string
by Rob Cliffe Dec. 12, 2009

Dec. 12, 2009

Python (e.g. 2.5) does not accept a backslash as the LAST character of a raw string: >>> r"\" File "<stdin>", line 1 r"\" ^ Syntax Error: EOL while scanning single-quoted string. path = r'\MyDir\MySubDir\' # raises same error path = r'\MyDir\MySubDir' # no error Isn't this a bug? Rob Cliffe

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Summary of Python tracker Issues
by Python tracker Dec. 11, 2009

Dec. 11, 2009

ACTIVITY SUMMARY (12/04/09 - 12/11/09) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue number. Do NOT respond to this message. 2526 open (+34) / 16775 closed (+11) / 19301 total (+45) Open issues with patches: 1007 Average duration of open issues: 694 days. Median duration of open issues: 450 days. Open Issues Breakdown open 2492 (+34) pending 33 ( +0) Issues Created Or Reopened (45) … [View More]

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Re: [Python-Dev] Proposing PEP 386 for addition
by Michael Mysinger Dec. 10, 2009

Dec. 10, 2009

More English language fixes: -In Python there are no real restriction yet on how a project should +In Python there are no real restrictions yet on how a project should -Furthermore, this will make OS packagers work easier when repackaging standards -compliant distributions, as of now it can be difficult to decide how two +Furthermore, this will make OS packagers' work easier when repackaging standards +compliant distributions, because as of now it can be difficult to decide how two -… [View More]to support many or all existing versioning schemas. +to support all or even most of existing versioning schemas. -reasons and we cannot expect that to change. +reasons that we cannot expect to change. -version schemas and is a preferable alternative than supporting +version schemas and is a preferable alternative to supporting -there should be possible to express more than one versioning level +it should be possible to express more than one versioning level -The problem with this is that while it allows expressing requisite any -nesting level it doesn't allow to express special meaning versions -(pre and post-releases as well as development versions), as expressed in +The problem with this is that while it allows expressing any +nesting level it doesn't allow giving special meaning to versions +(pre- and post-releases as well as development versions) as expressed in -Also, notice that Distutils version classes are not really used in the +Also, note that Distutils version classes are not really used in the -which does not enforce any rule for the version, but +which does not enforce any rules for the version, but -Setuptools function is quite spread because it's used by tools +Setuptools function is quite widespread because it's used by tools -post-releases -- which apparently is used by a number of projects +post-releases -- which apparently are used by a number of projects This one is particularly critical to your intended meaning as I read it: -before a <tt class="docutils literal"><span class="pre">.post345</span></tt> marker. +before a <tt class="docutils literal"><span class="pre">.post456</span></tt> marker. Technical question: I don't know what notation this versioning schema was trying for, especially in regards to what the +'s mean: N.N[.N]+[abc]N[.N]+[.postN+][.devN+] Am I missing something here? You could maybe explain what the pluses mean in the PEP, and why some are inside the [] and others are outside. Or a regular expression version like this might be more specific. N.N(.N)?([abc]N(.N)?)?(.postN)?(.devN)? Or an linux help version like this may be more readible. N.N[.N][{abc}N[.N]][.postN][.devN] Cheers, Michael Mysinger (longtime python-dev lurker) [View Less]

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recursive closures - reference leak
by Kristján Valur Jónsson Dec. 9, 2009

Dec. 9, 2009

Hello there. Consider this code: def factorial(n): def helper(n): if n: return n*helper(n-1) else: return 1 return helper(n) Ok, this is a bit contrived, but there are other valid reasons for calling a closure recursively. The problem with this is that once you have called factorial() once, you end up with … [View More]

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