need your help,,I can't figure out why I was wrong,the error goes like that :

oops,try again, median([4, 5, 5, 4]) returned 5 instead of 4.5

my code here:

```
def median(lvjc):
donkey=sorted(lvjc)
l=len(donkey)
print l
if l % 2== 0:
return (donkey[l/2]+donkey[l/2-1])/2
else:
return donkey[l/2]
```

thank you