I am very confused. This code when I execute is wrong, but I cannot understand why. Pardon the commented out lines I was experimenting without the different lines actually executed.

```
#Write your function here
def middle_element(lst):
#print(len(lst))
#print(len(lst) % 2)
# print((lst[int(len(lst)/2)] + lst[int((len(lst)-1)/2)]) /2)
if len(lst) // 2 == 0:
return (lst[int(len(lst)/2)] + lst[int(len(lst)/2) -1]) /2
else:
return str("Nice try")#lst[int(len(lst)/2)]
#Uncomment the line below when your function is done
print(middle_element([5, 2, -10, -4, 4, 5]))
```