[issue31243] checks whether PyArg_ParseTuple returned a negative int

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Do you want to provide a PR Oren?

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components: +Extension Modules -Interpreter Core
nosy: +serhiy.storchaka
stage:  -> needs patch
versions: +Python 2.7, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue31243>
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