python factorial math function code example

Example 1: python calculate factorial

def factorial(n):
    fact = 1
    for num in range(2, n + 1):
        fact = fact * num
    return(fact)

Example 2: factorial in python

def factorial(n):
    if n == 0:
        return 1
    else:
        return n * factorial(n-1)
n=int(input("Input a number to compute the factiorial : "))
print(factorial(n))