Write a Program to Find the Factorial of a Number in Python.

Factorial of a Number in Python.

The factorial function (symbol: !) says to multiply all whole numbers from our chosen number down to 1. Examples: 5! = 5 x 4 × 3 × 2 × 1 = 120;

number = int(input("Enter a number :: "))  

fact = 1  

if number < 0:  

   print("Factorial does not exist for negative numbers")  

elif number == 0:  

   print("The factorial of 0 is 1")  

else:  

   for i in range(1,number + 1):  

       fact = fact*i  

   print("The factorial of",number,"is",fact)  

OUTPUT

Enter a number :: 5

The factorial of 5 is 120