Python program to find factorial of a number

Below is the Python program to find factorial of a number.

# Python program to find the factorial of a number using recursion

def  factorial(n):   """Function"""

   if n == 1:       return n   
else:      
 return n*factorial(n-1)


num = int(input("Enter a number: "))
# check is no is negative
num < 0: 
  print("sorry ")
elif num == 0:   
print("The factorial of 0 is 1")
else:   
print("The factorial of",num,"is",factorial(num))