New submission from Silvio Ricardo Cordeiro <silvioricar...@gmail.com>:

The documentation at http://docs.python.org/dev/library/argparse.html 
explicitly says that "If file is None, sys.stderr is assumed".

However, both print_usage and print_help assume sys.stdout when file=None. The 
helper method _print_message actually does it right, when called with file=None.

----------
components: Library (Lib)
messages: 124271
nosy: silvioricardoc
priority: normal
severity: normal
status: open
title: argparse.ArgumentParser.print_help uses sys.stdout
type: behavior
versions: Python 2.6

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue10728>
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