[issue20341] Argument Clinic: add "nullable ints"

[Tal Einat]

Tal Einat added the comment:

You look very handsome today Larry :)

Regardless, I do think this is a good idea. I've converted several functions that have -1 as a default value for ints where they ideally should have None. Having None as the default will be much clearer and less error prone for users.

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nosy: +taleinat

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20341>
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