New submission from James Skinner:
When using the Path class in Lib/pathlib.py under Windows, calling p.owner() or
p.group() fails with an ImportError due to importing the pwd and grp modules
respectively, as neither of those exist. The documentation doesn't mention this
behaviour.
The precedent for handling this is set by os.stat(), which simply sets the
st_uid and st_gid fields to 0 under Windows, and this behaviour underlies
p.stat(). Therefore both p.owner() and p.group() should return 0 under Windows
as well.
>>> p = Path("foo.py")
>>> p.stat()
os.stat_result(st_mode=33206, st_ino=434125405408, st_dev=318314347,
st_nlink=1, st_uid=0, st_gid=0, st_size=40, st_atime=1392076800,
st_mtime=1392084010, st_ctime=1392083969)
>>> p.owner()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "D:\Python34\Lib\pathlib.py", line 1051, in owner
import pwd
ImportError: No module named 'pwd'
>>> p.group()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "D:\Python34\Lib\pathlib.py", line 1058, in group
import grp
ImportError: No module named 'grp'
After the patch, the behaviour is:
>>> p = Path("foo.py")
>>> p.stat()
os.stat_result(st_mode=33206, st_ino=434125405408, st_dev=318314347,
st_nlink=1, st_uid=0, st_gid=0, st_size=40, st_atime=1392076800,
st_mtime=1392084010, st_ctime=1392083969)
>>> p.owner()
0
>>> p.group()
0
>>> p.owner() == p.stat().st_uid
True
>>> p.group() == p.stat().st_gid
True
The supplied patch just creates overriden versions of owner() and group() that
return 0 under the WindowsPath class.
----------
components: Library (Lib)
files: win_owner_group_error_fix.patch
keywords: patch
messages: 210896
nosy: spiralx
priority: normal
severity: normal
status: open
title: pathlib.owner() and pathlib.group() raise ImportError on Windows
versions: Python 3.4
Added file: http://bugs.python.org/file34033/win_owner_group_error_fix.patch
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<http://bugs.python.org/issue20589>
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