[issue28653] refleak in functools.lru_cache

[Yury Selivanov]

Yury Selivanov added the comment:

> FWIW, if I comment out this code

Oh boy... This is something else. Please re-open #28649 explaining that it now leaks with pure-Python lru_cache.  Could you please take a look at it?

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<http://bugs.python.org/issue28653>
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