I cannot figure out what is wrong with the code?
This is the error message that I keep getting (with different numbers):
Oops, try again. Your function fails on is_prime(9). It returns True when it should return False
def is_prime(x): if x < 2: return False elif x == 2: return True else: for n in (2, x-1): if x % n == 0: return False else: return True