Bugs item #1703592, was opened at 2007-04-19 15:35
Message generated for change (Comment added) made by loewis
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Category: Extension Modules
Group: Python 2.6
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthias Klose (doko)
Assigned to: Martin v. Löwis (loewis)
Summary: have a way to ignore nonexisting locales in locale.setlocale
Initial Comment:
this came up on #ubuntu-devel; Debian and Ubuntu do not generate all libc
locales by default, so it is likely that
$ LC_ALL=en_US.UTF-8 python -c "import locale; locale.setlocale(locale.LC_ALL,
'')"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python2.5/locale.py", line 476, in setlocale
return _setlocale(category, locale)
locale.Error: unsupported locale setting
fails on a system (often experienced ssh'ing into a server system where your
current locale doesn't exist). Examples for bug reports in various applications
are:
https://launchpad.net/bugs/91583 (apt-listchanges)
https://launchpad.net/bugs/88638 (pitivi)
https://launchpad.net/bugs/81556 (exaile)
https://launchpad.net/bugs/90525 (hwdb-client)
In C, the result of the setlocale(3) call can be, and usually is ignored, if
the locale cannot be set.
It is argued that the Python interface for locale.setlocale() should not raise
an exception by default, if the locale is missing on the system.
That would be an behaviour change of locale.setlocale(), so the original
behavour should be kept as an option (introducing an optional third parameter
to raise the exception when the locale doesn't exist). Is this an appropriate
change, or could another change be suggested?
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>Comment By: Martin v. Löwis (loewis)
Date: 2007-04-19 19:50
Message:
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Originator: NO
Not raising an exception if an operation failed violates the Zen of Python
(errors should never pass silently, unless explicitly silenced). So
explicit silencing is necessary, but if so, it's easy enough to explicitly
catch the exception:
try:
locale.setlocale(..)
except locale.Error:
pass
If the intention is that all software on Debian works successfully even if
the locale is configured incorrectly, then an automated build system should
perform all builds in a non-existing locale, and see if anything fails.
----------------------------------------------------------------------
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