[issue35300] Document what functions are suitable for use with the lru_cache

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:


New changeset c7074007272f257a0efab76f03e6b400c30a51b4 by Raymond Hettinger (Miss Islington (bot)) in branch '3.7':
bpo-35300: Add usage note to the lru_cache() docs (GH-10707) (GH-10708)
https://github.com/python/cpython/commit/c7074007272f257a0efab76f03e6b400c30a51b4


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<https://bugs.python.org/issue35300>
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