[issue14710] pkgutil.get_loader is broken
New submission from Pavel Aslanov :
if module was marked as not existing by setting sys.modules [fullname] to None,
then pkgutil.get_loader (fullname) will throw AttributeError.
Example:
#! /usr/bin/evn python
import unittest
import pkgutil
def main ():
pkgutil.get_loader ('unittest.functools')
if __name__ == '__main__':
main ()
Patch is attached
--
components: Library (Lib)
files: python_pkgutil_bug.patch
keywords: patch
messages: 159848
nosy: Pavel.Aslanov
priority: normal
severity: normal
status: open
title: pkgutil.get_loader is broken
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file25442/python_pkgutil_bug.patch
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[issue14710] pkgutil.get_loader is broken
Pavel Aslanov added the comment: Main use case of pkgutil.get_loader is to determine if its possible to load module and either return loader or None. But it throws exception more over it is AttributeErrror exception. -- ___ Python tracker <http://bugs.python.org/issue14710> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14710] pkgutil.get_loader is broken
Pavel Aslanov added the comment:
This function is broken again in version 3.4
The way it should look is:
Python 2.7.6 (default, Feb 26 2014, 12:07:17)
[GCC 4.8.2 20140206 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pkgutil
>>> pkgutil.get_loader('no_such_module') # returns None
>>>
How it really looks:
Python 3.4.0 (default, Apr 27 2014, 23:33:09)
[GCC 4.8.2 20140206 (prerelease)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pkgutil
>>> pkgutil.get_loader('no_such_module')
Traceback (most recent call last):
File "", line 1, in
File "/usr/lib/python3.4/pkgutil.py", line 467, in get_loader
return find_loader(fullname)
File "/usr/lib/python3.4/pkgutil.py", line 488, in find_loader
return spec.loader
AttributeError: 'NoneType' object has no attribute 'loader'
>>>
find_loader is at fault (change "return spec.loader" -> "return spec and
spec.loader"). Thanks.
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