[Python-Dev] Python-3.0, unicode, and os.environ

Fri Dec 5 21:05:20 CET 2008

Guido van Rossum wrote:
> On Fri, Dec 5, 2008 at 2:27 AM, Ulrich Eckhardt <eckhardt at satorlaser.com> wrote:
>> In 99% of all cases, using the default encoding will work and do what people
>> expect, which is why I would make this conversion automatic. In all other
>> cases, it will at least not fail silently (which would lead to garbage and
>> data loss) and allow more sophisticated applications to handle it.
>> I think the "always fail noisily" approach isn't the best approach.
> E.g. if I am globbing for *.py, and there's an undecodable .txt file
> in a directory, its presence shouldn't cause the glob to fail.
>But why should it make glob() fail? This sounds like an implementation
detail of glob. Here's some pseudo-code::
def glob(pattern):
 string = False
 if isinstance(pattern, str):
 string = True
 if platform == 'POSIX':
 pattern = bytes(pattern, encoding=defaultencoding)
 rawfiles = os.listdir(os.path.dirname(pattern) or pattern)
 if string and platform == 'POSIX':
 return [str(f) for f in rawfiles if match(f, pattern)]
 else:
 return rawfiles
This way the traceback occurs if anything in the result set is
undecodable. What am I missing?
-Toshio
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