The dictionary functions in a similar fashion to the Python list, in that it is a collection of data. In this case, however, dictionaries hold key-value pairs instead of single values.

To memoize a function in Python, we can use a utility supplied in Python’s standard library—the functools.lru_cache decorator. ... This caches a maximum of 360 possible values for x, ...

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Python, JavaScript & C++ examples - Void function, Functions in Programming that require or return a Value discussed in brief for beginners.