[issue9632] Remove sys.setfilesystemencoding()

Marc-Andre Lemburg report at bugs.python.org
Thu Aug 26 22:17:22 CEST 2010

Marc-Andre Lemburg <mal at egenix.com> added the comment:

STINNER Victor wrote:
> STINNER Victor <victor.stinner at haypocalc.com> added the comment:
>> Think of e.g. embedded Python interpreters or py2exe-style applications
>> running on Linux or other systems that don't use Unicode APIs 
>> for FS-interaction or have fixed FS-encodings.
> What is the problem here? Python does guess the filesystem encoding. If the encoding is "wrong" (not the value expected by the user), filenames are not displayed correctly (mojibake) but it does just work. Anyway, why is it not possible to use PYTHONFSENCODING here? Are you talking to Python modules loaded from a non-ascii path?
> Sorry, but I do not understand.

In such environments you cannot expect the user to configure the
system properly (i.e. set an environment variable). Instead, the
application has to provide an educated guess to the Python
interpreter in some way, hence the idea to use a configuration
file or perhaps provide a C API that can be used to set the
variable before initializing the interpreter.


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