Mailman 3 May 2010 - Python-Dev

Issue #8610: Set default file system encoding to ascii on error?
by Victor Stinner 07 May '10

07 May '10

Python 3.0 introduced PyUnicode_DecodeFSDefault() and PyUnicode_DecodeFSDefaultAndSize() functions. These functions fallback to UTF-8 if getting the file system encoding failed or the encoding is unknown (there is not nl_langinfo(CODESET) function). UTF-8 is not a good choice for the fallback because it's incompatible with other encodings like Latin1. I would like to fallback to ASCII on error which is compatible with all encodings (thanks to surrogateescape). I would like to ensure that sys.getfilesystemencoding() result cannot be None, because Python 3.2 uses it on Unix to decode os.environb and to encode filenames in subprocess. I can implement a fallback for os.environb and subprocess (and other functions calling sys.getfilesystemencoding()), but I prefer to have a reliable sys.getfilesystemencoding() function. This change doesn't concern Windows and Mac OS X because the encoding is hardcoded (mbcs, utf-8). On Unix, I don't know in which case nl_langinfo() can fail. Empty environment is not an error: nl_langinfo(CODESET) returns "ascii". I think that few (or no) user would notice this change. -- Victor Stinner http://www.haypocalc.com/

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Running Clang 2.7's static analyzer over the code base
by Brett Cannon 06 May '10

06 May '10

Since 2.7 is probably going to exist for a while, I am running Clang 2.7's static analyzer (``clang --static``) over trunk. It's mostly just finding stuff like unneeded variable initialization or variables that are never used (compilation is picking up unused returned values, almost all from PyObject_INIT). When I check in these changes I will do it file by file, but my question is how to handle Misc/NEWS. I have gone through the underscores and the 'a's in Modules and already have six modified files, so the final count might be a little high. Do people want individual entries per file, or simply a single entry that lists each file modified? We should probably go through the C code and fix the whitespace before we hit 2.7 final (there is a ton of lines with extraneous spaces). -Brett

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Fwd: broken mailing list links in PEP(s?)
by Michael Foord 06 May '10

06 May '10

Hello all, It looks like the changes to the python-dev mailman archives broke some of the links in PEPs. All the best, Michael Foord -------- Original Message -------- Subject: broken mailing list links in PEP(s?) Date: Tue, 4 May 2010 20:22:57 -0700 From: Bayle Shanks <bayle.shanks(a)gmail.com> To: webmaster(a)python.org On http://www.python.org/dev/peps/pep-0225/ , in the section "Credits and archives", there are a bunch of links like http://mail.python.org/pipermail/python-list/2000-July/108893.html which are broken thanks, bayle

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slight release schedule change
by Benjamin Peterson 04 May '10

04 May '10

Hi, I'm sorry I neglected to mention this before. I'm delaying all 2.7 releases a week because of beta 1's lateness. I've now updated PEP 373. So, beta 2 will be this Saturday. -- Regards, Benjamin

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Daily DMGs
by "Martin v. Löwis" 04 May '10

04 May '10

David Bolen and I started producing daily OSX installers, at http://www.python.org/dev/daily-dmg/ If you find problems with these, please report them to bugs.python.org. Regards, Martin

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Should we drop active support of OSF/1?
by Jesus Cea 03 May '10

03 May '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 We don't have any buildbot backing this system. OSF/1 last version was in 1994, was picked by Digital (Tru64 Unix). Last version of Tru64 was released in late 2006. Now Digital is owned by HP with its own Unix (HP-UX). Maybe we can drop OSF/1 safely supporting Tru64 yet, but we don't have any buildbot running any of this systems... Deprecated systems are documented in PEP-11. - -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ jcea(a)jcea.es - http://www.jcea.es/ _/_/ _/_/ _/_/ _/_/ _/_/ jabber / xmpp:jcea@jabber.org _/_/ _/_/ _/_/_/_/_/ . _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQCVAwUBS9XT9Zlgi5GaxT1NAQJkVgP9G6mj+Cm3BoXrAYQQXqfGevGWQhwQENgI ONH2B4XzOQZv9JTorDcWjU9Onf7s3YJ0AZk5pBxuekDOoblFKEz0yU3X40HLhU3N 8dxJ6aRNYBpPLYFbJp2tuGb2rs/VpfuKPAlmKxcRKUvC7heyxokFyXJnnXy2i50r XnHYwfz5PG8= =SseK -----END PGP SIGNATURE-----

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Alias for distutils.file_util.write_file in e.g. shutils
by Olemis Lang 03 May '10

03 May '10

Hello ! Often I have the contents to be written in a file at a given path that I know as well. I recently tried to find a function in stdlib to do that and to my surprise this is what I found : - Such function exists - It's `distutils.file_util.write_file` IMO the last place where people'd look for such a function is inside `distutils` package. Besides I reviewed modules listed under `File and directory access` category in `Library Reference` and found nothing even similar. Q: - Is it a good idea to provide a similar function in e.g. shutils module ? Probably there's already a better way to do this and my comment is just irrelevant . Anyway is just a suggestion ;o) -- Regards, Olemis. Blog ES: http://simelo-es.blogspot.com/ Blog EN: http://simelo-en.blogspot.com/ Featured article: Soporte para AMF (RPC) en Trac - http://feedproxy.google.com/~r/simelo-es/~3/9dYgHeK5Be8/soporte-para-amf-rp…

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Frequency of the dev docs autobuild
by Nick Coghlan 02 May '10

02 May '10

Does the online dev version of the docs build in response to docs checkins, or just once a day? (And is that written down somewhere and I've just forgotten where to look...) Cheers, Nick. -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia ---------------------------------------------------------------

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Enhanced tracker privileges for "dangerjim" to do triage.
by Sean Reifschneider 02 May '10

02 May '10

I'm trying to get a good friend of mine to start doing bug triage on Python. As part of my trying to mentor him on it, I've found that many of the common things I do in triage, like setting a priority for priorityless bugs, assigning them to people who obviously are the next step, requires enhanced privileges. He has no reputation in the Python community, so I'd be up for getting him started on things that require fewer privileges like verifying older patches still apply against newer Pythons, or maybe summarizing priority/assignment changes to the list and having someone (possibly me) make the changes, etc... However, I will step up for him and say that I've known him a decade, and he's very trustworthy. He has been the president (we call that position Maximum Leader) of our Linux Users Group here for 5 years or so. Thoughts? Thanks, Sean -- Sean Reifschneider, Member of Technical Staff <jafo(a)tummy.com> tummy.com, ltd. - Linux Consulting since 1995: Ask me about High Availability

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PEP or issue recording rationale for allowing multiple context managers?
by Nick Coghlan 02 May '10

02 May '10

I was looking for a reference for the addition of multiple context manager support to with statements in 3.1 and 2.7 and came up empty (aside from the initial python-ideas thread [1] that I linked to from PEP 377). I was hoping to find something that clearly spelled out: - the two major flaws in contextlib.nested* - the parallel with import statements for the precise chosen syntax - Guido's blessing to go ahead and do it *Those flaws being - that __init__/__new__ methods of inner context managers aren't covered by outer context managers - that outer context managers can't suppress exceptions from inner __enter__ methods Note that I'm not complaining about the decision itself (that would be silly, since I agree with the outcome), I'm just trying to find something to point to about it that is a little more concrete than a python-ideas thread. Cheers, Nick. [1] http://mail.python.org/pipermail/python-ideas/2009-March/003188.html -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia ---------------------------------------------------------------

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