Python – Factorial of a number

In this post, we will see how we can find factorial of a given number using python

Logic

Factorial of number 5 is =>

5*4*3*2*1 = 120

Implementation

In this below code block, we will get to know use of

• if else statement
• for loop
• print method

num = 5

factorial = 1

if num < 0:
    print("factorial of", num, "is not possible")
elif num == 0:
    print("factorial of", num, "is 1")
else:
    for i in range(1, num + 1):
        factorial = factorial * i
    print("factorial of", num, "is", factorial)