[issue19005] PyIter_Next crashes if passed a non-iterator

[Raymond Hettinger]

Raymond Hettinger added the comment:

This is a documentation bug.  As you noted, the input must be an iterator. It is up to the C programmer to assure this precondition is met.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19005>
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