def factorial(n): if n == 0: return 1 else: return n * factorial(n - 1) x = 5 print("\n Factorial of ", x, " is ", factorial(x)) Base Case 1: If n == 0 , the function returns 0 .Base Case 2: If n == 1 ...

This Python script defines a function factorial(n) that calculates the factorial of a number n using a recursion method. It tests the function with the number 5.