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Tue Jul 30 12:52:55 CEST 2013 · https://mail.python.org/pipermail/python-dev/2013-July/127663.html

2013/7/30 Richard Oudkerk <shibturn at gmail.com>:
> Note that on Windows subprocess has no equivalent of a passfds argument, and
> if you redirect the standard streams then you are forced to inherit all
> inheritable handles.

You can redirect standard streams (stdin, stdout, stderr) using the
startup info structure:

startupinfo.dwFlags |= _winapi.STARTF_USESTDHANDLES
startupinfo.hStdInput = p2cread
startupinfo.hStdOutput = c2pwrite
startupinfo.hStdError = errwrite

But I don't know how to add another streams (ex: pipe). I would be
nice to have a "pass_handles" on Windows.

Victor

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[Python-Dev] PEP 446: Open issues/questions