In python can anyone help me to implement function in this using range-based- for loops def factorial(n): """ Returns n! = n * (n-1) * (n-2) ... * 1 0! is 1. Factorial is undefined for integers < 0. Examples: factorial(0) returns 1 factorial(2) returns 2 factorial(3) returns 6 factorial(5) returns 120 Parameter n: The integer for the factorial Precondition: n is an int >= 0 """