Factorial made in Python

factorial.py

def recursive_factorial(n):
    if n == 1:
        return 1
    return n * recursive_factorial(n - 1)


def iterative_factorial(n):
    result = 1
    for i in range(2, n+1):
        result *= i
    return result


print(iterative_factorial(4))
print(recursive_factorial(4))