def __ne__(self, other):
        if isinstance(other, self.__class__):
            return self._items != other._items
        else:
            try:
                return len(other) != len(self._items) or any(item not in self for item in other)
            except __HOLE__:
                return NotImplemented
dataset/ETHPy150Open datastax/python-driver/cassandra/util.py/SortedSet.__ne__