Bugs item #1736483, was opened at 2007-06-13 13:41
Message generated for change (Comment added) made by cpegeric
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Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Eric (cpegeric)
Assigned to: Nobody/Anonymous (nobody)
Summary: os.popen('yes | echo hello') stuck
Initial Comment:
after calling os.popen('yes | echo hello'), the process never returns.
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>Comment By: Eric (cpegeric)
Date: 2007-06-14 01:28
Message:
Logged In: YES
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Originator: YES
command line also get stuck. The OS is MacOSX. Python version 2.3.5.
Will it help update to new version?
I quited the program by Ctrl-C.
python -c 'import sys, os; sys.stdout.write(os.popen("yes | echo
hello").read())'
^CTraceback (most recent call last):
File "<string>", line 1, in ?
KeyboardInterrupt
% python -c 'import sys, os; sys.stdout.write(os.popen3("yes | echo
hello")[1].read())'
^CTraceback (most recent call last):
File "<string>", line 1, in ?
KeyboardInterrupt
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Comment By: Ilguiz Latypov (ilgiz)
Date: 2007-06-13 17:07
Message:
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user_id=281701
Originator: NO
Could you try the same command from your shell?
I am guessing "yes" will write an error message about the broken pipe to
stderr.
$ python -c 'import sys, os; sys.stdout.write(os.popen("yes | echo
hello").read())'
yes: standard output: Broken pipe
yes: write error
hello
$ python -c 'import sys, os; sys.stdout.write(os.popen3("yes | echo
hello")[1].read())'
hello
----------------------------------------------------------------------
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