[issue37913] Document that __length_hint__ may return NotImplemented

Steve Dower report at bugs.python.org
Tue Sep 10 10:06:41 EDT 2019


Change by Steve Dower <steve.dower at python.org>:


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pull_requests: +15509
pull_request: https://github.com/python/cpython/pull/15862

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37913>
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