Python: Remove Duplicate Items from Nested list

Question

mylist = [[1,2],[4,5],[3,4],[4,3],[2,1],[1,2]]

I want to remove duplicate items, duplicated items can be reversed. The result should be :

Answer 1

If order is not important:

def rem_dup(l: List[List[Any]]) -> List[List[Any]]:
    tuples = map(lambda t: tuple(sorted(t)), l)
    return [list(t) for t in set(tuples)]