Python trades runtime speed for programmer convenience, and most of the time it’s a good tradeoff. One doesn’t typically need the raw speed of C for most workaday applications. And when you need to ...

Note that functions are assumed to be unchanged as long as the name is unchanged. Redefined function (with decorator applied again) will return cached result of similar call to the original function.

Once is a library that memoizes repeated functions calls in Python, and is also able to load and save the memoization cache to disk.