[issue21145] Add the @cached_property decorator

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:


New changeset d658deac6060ee92b449a3bf424b460eafd99f3e by Nick Coghlan (Carl Meyer) in branch 'master':
bpo-21145: Add cached_property decorator in functools (#6982)
https://github.com/python/cpython/commit/d658deac6060ee92b449a3bf424b460eafd99f3e


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<https://bugs.python.org/issue21145>
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