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Issue #10565: Iterator ABC should require both __next__ and __iter__.

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This commit is contained in:
Raymond Hettinger 2010-11-29 03:56:12 +00:00
parent 263cbdfdfb
commit ead22227cc
3 changed files with 13 additions and 3 deletions
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3
Lib/_abcoll.py
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@ -90,7 +90,8 @@ class Iterator(Iterable):
@classmethod
def __subclasshook__(cls, C):
if cls is Iterator:
if any("__next__" in B.__dict__ for B in C.__mro__):
if (any("__next__" in B.__dict__ for B in C.__mro__) and
any("__iter__" in B.__dict__ for B in C.__mro__)):
return True
return NotImplemented