`uniq` method mixin

uniq_mixin.py

class UniqMixin:

    def uniq(self):
        uniq_list = []
        for el in self:
            if el not in uniq_list:
                uniq_list.append(el)
        return self.__class__(uniq_list)


if __name__ == '__main__':

    class MyTuple(UniqMixin, tuple): pass
    l = MyTuple([7, 1, 2, 3, 2, 5, 7, 3])
    print(l)
    print(l.uniq())