[issue10225] Fix doctest runable examples in python manual

[Alexander Belopolsky]

Alexander Belopolsky <belopolsky at users.sourceforge.net> added the comment:

I started with 2.7 branch because some of the issues are the same there, but the tools work better at the moment.  I a posting a work-in-progress patch to solicit early feedback.

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versions: +Python 2.7, Python 3.1

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