"Task one is no longer passing"

Task one is to simply import the random library. I'm very confused as to how that could stop working; I haven't edited the line, nor added anything above it. It passed as is, and I completed the second task as well (it was to set start to 5.) The third task is to make a while loop that imports a random number between 1 and 99, determine if the number is even or odd, and print whether it is even or odd. It also asks to decrease start by one. My only guess is that I messed up the code somewhere else, and the "Task one no longer passing" error is a generic response? The answer is probably right in front of me, I just can't find it. Thanks in advance for your input!

import random
start = 5
def even_odd(num):
    # If % 2 is 0, the number is even.
    # Since 0 is falsey, we have to invert it with not.
    return not num % 2
while start:
    num = random.randint(1, 99)
    even_odd(num):
        if num is True:
            print("{} is odd".format(num))
        else:
            print("{} is even".format(num))
    start -= 1