[docs] [issue23116] Python Tutorial 4.7.1: Improve ask_ok() to cover more input values

[Berker Peksag]

Berker Peksag added the comment:

I agree with all of Carol's suggestions. Also, OSError could be replaced with a more appropriate exception such as ValueError.

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nosy: +berker.peksag
stage:  -> needs patch
versions: +Python 3.5, Python 3.6 -Python 3.4

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