Issue 24246: mimetypes.guess_extension returns different values when init() is called several times (original) (raw)

Hi,

Following the principle of least astonishment, I would expect the function to return the same value.

Python 2.7.3 (default, Mar 13 2014, 11:03:55) [GCC 4.7.2] on linux2 Type "help", "copyright", "credits" or "license" for more information.

import mimetypes mimetypes.init() mimetypes.guess_extension('text/plain') '.ksh' mimetypes.init() mimetypes.guess_extension('text/plain') '.asc' mimetypes.init() mimetypes.guess_extension('text/plain') '.txt'

It seems that each call overrides the global dictionnary, which changes the iteration order of the next call.

Best Regards, Emmanuel