[issue12222] All pysetup commands should respect exit codes

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

BTW, some functions do not explicitly return 0, but this is okay: they will return None, which is a boolean false value, which is understood as 0 by sys.exit.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12222>
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