[issue12607] subprocess(stdout=..., stderr=sys.stdout) breaks stderr for child

[Christian Häggström]

Christian Häggström <pajton at kalvdans.no-ip.org> added the comment:

I expect that 'ls' print the error message on its stderr, which would be redirected to stdout of the test Python program.

If I had been using stderr = subprocess.STDOUT, I can agree with you that both output streams would go to /dev/null.

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<http://bugs.python.org/issue12607>
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