Answers for "factorial of a number in python using function"

python calculate factorial

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

factorial python

def factorial_iter(n):
    product = 1
    for i in range(n):
        product = product * (i+1)
    return product

def factorial_recursive(n):
    if n == 1 or n == 0:
        return 1
    return n * factorial_recursive(n-1)

# f = factorial_iter(5)
f = factorial_recursive(0)
print(f)

factorial python

def factorial(n)
    if n < 2:
        return 1
    else:
        return n * factorial(n - 1)