[docs] [issue10728] argparse.ArgumentParser.print_help uses sys.stdout

[R. David Murray]

Changes by R. David Murray <rdmurray at bitdance.com>:


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versions: +Python 2.7, Python 3.1, Python 3.2 -Python 2.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10728>
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