[ python-Bugs-1220113 ] subprocess call() helper should close stdin if PIPE

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Bugs item #1220113, was opened at 2005-06-14 15:04
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Stuart Bishop (zenzen)
Assigned to: Nobody/Anonymous (nobody)
Summary: subprocess call() helper should close stdin if PIPE

Initial Comment:
The following code snippet should die instead of hang.

>>> from subprocess import call, PIPE
>>> rv = call(['/usr/bin/bzip2', '-c'], stdout=PIPE,
stdin=PIPE)

It makes no sense not to close stdin if it is PIPE
because the stream cannot be accessed.

The use case for this is ensuring a subprocess that
detects if it is connected to a terminal or not runs in
'batch' mode, and that it will die instead of hang if
it unexpectidly attempts to read from stdin.

Workaround is to use Popen instead.

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You can respond by visiting: 
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