[ python-Bugs-1532920 ] os.path.isfile('CON:') does not behave as documented

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Bugs item #1532920, was opened at 2006-08-02 15:13
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: lplatypus (ldeller)
Assigned to: Nobody/Anonymous (nobody)
Summary: os.path.isfile('CON:') does not behave as documented

Initial Comment:
In Windows, os.path.isfile() returns True for device
filenames such as 'CON:', 'NUL:', 'AUX:', 'PRN:', and
'C:\\Program Files\\con.mp3'.

The documentation for os.path.isfile() says that it
returns True only for regular files, so it should
return False for the above examples (or else the
documentation should be amended).  In Linux,
os.path.isfile('/dev/null') returns False as expected.

This problem occurs because the “stat” function in
Microsoft’s C library behaves differently than in *nix.
 Quoting from Microsoft's documentation for stat:
    “st_mode: ... the _S_IFREG bit is set if path
specifies an ordinary file or a device”

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__stat.2c_._wstat.2c_._stati64.2c_._wstati64.asp

A similar problem exists with
stat.S_ISREG(os.stat('CON:').st_mode)


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