[issue28969] lru_cache is not threadsafe

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Thank you for your example Peter.

Proposed patch fixes the KeyError. It introduces new private C API _PyDict_Pop_KnownHash(). It is like _PyDict_Pop(), but with precomputed hash.

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keywords: +patch
stage: needs patch -> patch review
Added file: http://bugs.python.org/file45912/lru_cache-dict-pop.patch

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