Title: locale.getdefaultlocale doesnt handle all locales gracefully
Type: Stage:
Components: Extension Modules Versions: Python 2.3
Status: closed Resolution: duplicate
Dependencies: Superseder:
Assigned To: Nosy List: doko, georg.brandl, jlgijsbers, loewis
Priority: normal Keywords:

Created on 2003-09-27 08:54 by doko, last changed 2006-02-20 19:08 by georg.brandl. This issue is now closed.

Messages (4)
msg18402 - (view) Author: Matthias Klose (doko) * (Python committer) Date: 2003-09-27 08:54
[forwarded from]

$ LC_ALL=en_ZA python
Python 2.3.1 (#2, Sep 24 2003, 11:39:14) 
[GCC 3.3.2 20030908 (Debian prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for
more information.
>>> import locale
>>> locale.getdefaultlocale()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.3/", line 346, in
    return _parse_localename(localename)
  File "/usr/lib/python2.3/", line 280, in
    raise ValueError, 'unknown locale: %s' % localename
ValueError: unknown locale: en_ZA

Note that locale.getlocale correctly returns (None, None)

locale.getdefaultlocale() calls _parse_localename,
which throws a ValueError if normalize e.g. does not
return an encoding.

If this behaviour in python is "as it should be",
locale.getdefaultlocale should document it as such, to
make it clear to apps using getdefaultlocale that they
*must indeed* handle such an exception gracefully. (In
this case, it could probably be a "normal" bug, then
the "important" bug belongs with apt-listchanges.)

The problem might be (depending on "specifications")
either getlocale returning ValueError in the "unknown"
case, or it could be because locale_alias does not
contain an entry for en_ZA...
msg18403 - (view) Author: Martin v. Löwis (loewis) * (Python committer) Date: 2003-10-04 08:06
Logged In: YES 

This is a known limitation: getdefaultlocale should not be
used in new code.

If the intention is to compute the locale's encoding,
locale.getpreferredencoding should be used instead.
msg18404 - (view) Author: Johannes Gijsbers (jlgijsbers) * (Python triager) Date: 2004-11-08 18:59
Logged In: YES 
user_id=469548 seems to be the same bug.
msg18405 - (view) Author: Georg Brandl (georg.brandl) * (Python committer) Date: 2006-02-20 19:08
Logged In: YES 

Closing as duplicate of #504219.
Date User Action Args
2009-02-13 02:24:59ajaksu2linkissue504219 dependencies
2003-09-27 08:54:36dokocreate