[issue25295] functools.lru_cache raises KeyError

[Peter Brady]

Peter Brady added the comment:

As a sanity check I removed the stored hashvalue in Raymond Hettinger's backported lru_cache (which we use to support 2.6-3.2) and end up with errors as well.  So it seems like 24483 is the appropriate fix to restore the old behavior.  Thanks for looking into this.

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<http://bugs.python.org/issue25295>
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