[issue33774] Document that @lru_cache caches based on exactly how the function arguments are specified

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

I propose this, "Distinct argument patterns may be considered to be distinct calls with distinct results even if the underlying function sees them as equivalent calls."

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33774>
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