[issue24483] Avoid repeated hash calculation in C implementation of functools.lru_cache()

[Meador Inge]

Meador Inge added the comment:

I did some regression testing and reviewed the code; LGTM.

As for the code structure issues, I agree that the duplication is undesirable (the readability argument is not that convincing), but Serhiy's patch is consistent with the existing design.  As such, I think the structure issue is a separate one and definitely should not hold this patch up.

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nosy: +meador.inge

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