That’s because Python uses a very nice syntax that looks extremely similar to English. To define a function, we simply use the statement “def.” Can you guess what that’s short for?

Some functions are Boolean in nature, returning a “yes” or “no” answer, or, more appropriately, a non-zero or zero value, respectively. Procedures are simply special cases, functions that do not ...

lru_cache basics To memoize a function in Python, we can use a utility supplied in Python’s standard library—the functools.lru_cache decorator. lru_cache isn’t hard to use.