Python example to find factorial of a given number

# function to find factorial
def factorial (n):
	if (n <= 1):
		return 1

	i = 1
	product = 1
	while (i <= n):
		product = product * i
		i = i + 1

	return product

# main() function	
print(factorial(0))
print(factorial(1))
print(factorial(2))
print(factorial(8))