def f7(seq):
    """
    Makes a list unique
    """
    seen = set()
    seen_add = seen.add
    return [x for x in seq if x not in seen and not seen_add(x)]
def f7(seq):
    """
    Makes a list unique
    """
    seen = set()
    seen_add = seen.add
    return [x for x in seq if x not in seen and not seen_add(x)]
Makes a list unique