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# Am i missing something with this

My exercise is returning the expected output but the check seems to be failing. Please help with what may be missing

slices.py
```def first_4(listA):

return listA[:4]

def first_and_last_4(listB):
return listB[:4] + listB[-4:]

def odds(listC):
return listC[1::2]

def reverse_evens(listD):
listD= listD[::-1]
return(listD[::2])
```

I think I know the issue you're having - is it with the last function by any chance? I made a basic error with that one the first go I had at it - my function didn't check whether the last index was odd or even, it just took that last index and iterated (backwards) from there.

My first code looked something like:

```def reverse_evens (input):
return input[::-2]
```

which does exactly the same thing as your `reverse_evens` function. If the list I passed in to the function contained an odd number of items, it worked fine! But if the list had an even number, I was instead returning the odd-indexed items.

```list1 = [1, 2, 3, 4, 5, 6, 7]

print(reverse_evens(list1))
[7, 5, 3, 1]

list2 = [1, 2, 3, 4, 5, 6, 7, 8]
print(reverse_evens(list2)
[8, 6, 4, 2]
```

How do you think you could add the % modulus operand to your function, to check whether the last index is even or odd, and start at the correct index accordingly?