How to report a error in a quiz?

Question

In the Python course, function section, there is a quiz that asks to calculate the Fibonacci number of 4. The answer according to many widely available calculators is 3, but the quiz takes 5 as the correct answer. The function written in the quiz has the Fibonacci of zero returning 1 and it should return zero.

This is the bad code in the quiz:

def fib(x):
if x == 0 or x == 1:
return 1
else:
return fib(x - 1) + fib(x - 2)

print(fib(4))

It should look something like this:

def fib(n):
if n==1 or n==2:
return 1
return fib(n-1)+fib(n-2)

print(fib(4))

Answer 1

5

Answer 2

What is the result of this code?
def fib(x):
if x == 0 or x == 1:
return 1
else:
return fib(x-1) + fib(x-2)
print(fib(4))
out put:5

Answer 3

result --------------> 5

Answer 4

These are functionally the same. I agree that it looks different than what you would traditionally see but it works the same other than including zero as a valid input.

Answer 5

@James Durand They are not functionally the same, they return 2 different answers, one 3 and the other 5. The point was not to compare the 2 pieces of code, but to point out the error. The correct answer is 3 and not 5.