[Python-bugs-list] [ python-Feature Requests-798520 ] os.popen with invalid mode differs on Windows and POSIX

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Feature Requests item #798520, was opened at 2003-09-01 07:34
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=355470&aid=798520&group_id=5470

Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Andrew Gaul (gaul)
Assigned to: Nobody/Anonymous (nobody)
Summary: os.popen with invalid mode differs on Windows and POSIX

Initial Comment:
On Windows, os.popen with an invalid mode throw a
ValueError and on POSIX systems it throws an OSError.

Python 2.3 (#46, Jul 29 2003, 18:54:32) [MSC v.1200 32
bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for
more information.
>>> import os
>>> os.popen('dir', '')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: popen() arg 2 must be 'r' or 'w'

Python 2.3 (#167, Sep  1 2003, 06:38:18)
[GCC 3.0.4] on linux2
Type "help", "copyright", "credits" or "license" for
more information.
>>> import os
>>> os.popen('ls', '')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
OSError: [Errno 22] Invalid argument

Additionally, the ValueError message is incorrect; arg
2 can be 'r', 'rb', 'rt', 'w', 'wb', or 'wt'.

----------------------------------------------------------------------

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https://sourceforge.net/tracker/?func=detail&atid=355470&aid=798520&group_id=5470