[issue29350] Add support of multiple signatures

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

It can be do, but I don't think it is worth. Making bases and mapping optional arguments does not make much sense to me. And there is no a value that can be used as a default value for the second parameter in dict.pop().

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29350>
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