**Task:**

*Define a function called is*prime that takes a number x as input._*For each number n from 2 to x - 1, test if x is evenly divisible by n.**If it is, return False.**If none of them are, then return True.*

**Code:**

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

**Oops, try again.** Your function fails on is_prime(0). It returns None when it should return False.