basic factorial loop in python code example

Example 1: factorial python for loop

#Factorial 
'''factorial n! - n* n-1*n-2..1'''

def fac_iterative_method(n):
    fac = 1
    for i in range(n):
        fac = (fac * (i+1))
        print('fac of',i+1,'=',fac)
        
number = int(input('enter the number'))
fac_iterative_method(number)

Example 2: factorial in python using for loop

# change the value for a different result
num = int(input('enter a number'))
# To take input from the user
#num = int(input("Enter a number: "))
factorial = 1
# check if the number is negative, positive or zero
if num < 0:
   print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
   print("The factorial of 0 is 1")
else:
   for i in range(1,num + 1):
       factorial = factorial*i
   print("The factorial of",num,"is",factorial)