python-functional programming

Question

Module 7 Quiz
What is the result of this code?
def power(x, y):
if y == 0:
return 1
else:
return x * power(x, y-1)

print(power(2, 3))

i think its 4 but the answer is 8 how?
where power(x,y-1)==2,so 2**2==4

Answer 1

power(2, 3) = 2^3 = 2 * 2 * 2 = 8

Answer 2

Isn't it 2*power(2,2)
Power(2,2) = 2*power(2,1)
So power(2,2) = 4
So 2 * 4 is 8

Answer 3

You're trying to get the power right? 3rd power of 2 is 8. 2 * 2 * 2 = 8