[issue10586] Enhanced cache access API for functools.lru_cache

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

Raymond suggested a simple cache_info() method that returns a named tuple as a possible alternative.

I like that idea, as it makes displaying debugging information (the intended use case for these attributes) absolutely trivial:

>>> import functools
>>> @functools.lru_cache()
... def f(x):
...   return x
... 
>>> f.cache_info()
lru_cache_info(maxsize=100, currsize=0, hits=0, misses=0)

(Alternative patch attached)

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Added file: http://bugs.python.org/file19882/functools_lru_cache_info_method.diff

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