def remove_duplicates(numbers): no_duplicates =  for i in numbers: if i not in numbers: no_duplicates.append(i) return no_duplicates print remove_duplicates([1,1,2,2,3,4,5,5,6]) here
That is what I get as a return:
Oops, try again. remove_duplicates([4, 5, 5, 4]) returned  instead of [4, 5]
If Someone sees what is wrong, I will be very very grateful!