Recursion

we know that in Python,a function can call other functions or it can even call itself.These type of
construct are called as Recursive Functions

#Factorial of a No.

def factorial(num):
    return 1 if num == 1 else (num  * factorial(num - 1))

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

print("Factorial of {} is {}".format(num,factorial(num)))

Enter a number:10
Factorial of 10 is 3628800