@stetim94 could you please help me? I get the same error message as @bitninja99561(Oops, try again. Your function fails on is_prime(3). It returns None when it should return True.)

Here is my code :

```
def is_prime(x):
if x < 2:
return False
elif x == 2:
return True
else:
for n in range(2, x-1):
if x % n == 0:
return False
else:
return True
```