[issue41220] add optional make_key argument to lru_cache

[Felipe Rodrigues]

Felipe Rodrigues <felipe at felipevr.com> added the comment:

Hello all,

I love discussions about caching! While I do see the point of Itayazolay's proposal, I think that it should be on the _caller_ to solve the caching issue, and not on the _callee_ to provide a way to make it happen.

That is, I think that if one wants to use a cache, they should make sure their arguments are hashable and not that we should modify called functions to provide workarounds for those.

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nosy: +fbidu

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<https://bugs.python.org/issue41220>
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