I cannot figure out why my code is returning an empty list

Asked May 14 '18 at 00:37

Active May 14 '18 at 01:41

Viewed 42 times

My code to the question "Write a function remove_duplicates that takes in a list and removes elements of the list that are the same (in the form of a new list)" returns an empty list, that is, [], instead of a list with no duplicates. I cannot seem to understand why?

def remove_duplicates(sequence):
    k = []
    for x in sequence:
        for i in k:
            if x != i:
                k.append(x)
            else:
                k = k
    return k

edited May 14 '18 at 01:41

ktzr

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asked May 14 '18 at 00:37

Green Dreams

`def remove_duplicates(sequence): return list(set(sequence))` – Arthur Dent May 14 '18 at 00:40
`for i in k` will do nothing for the first `x` since `k` is empty. So `k` is empty for the second `x`, etc. In the end, `k` stays empty until you exhaust the `sequence`. – hilberts_drinking_problem May 14 '18 at 00:52

I cannot figure out why my code is returning an empty list

0 Answers0