[issue21145] Add the @cached_property decorator

[Alex Gaynor]

Alex Gaynor added the comment:

Will that implementation cause a memory leak? Won't the lru_cache have a dict mapping {self: result}, meaning that `self` will live forever, instead of storing result in self.__dict__, where the lifetimes are correct.

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nosy: +alex

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21145>
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