Python matplotlib

Memoization is a useful tool that you can use to make your function calls a little faster. Make a dictionary and store numbers as keys, their factorials as values. Start with a dictionary factorials = {0:1. Create a function factorial(x). The first thing factorial (x) should do, is check whether x can be found in your dictionary. . If it can find x, output the value in the dictionary corresponding to key x. If it cannot be found, try again by recursion. print (factorial (500)). Check that your dictionary gets filled. from math import factorial as fact. Compare the speed of fact (501) to factorial (501). Which is faster