@abc.abstractmethod
    def __ne__(self, other):
        raise NotImplementedError
After the subsequent sale, carry out two more sells/shorts
dataset/ETHPy150Open adewes/blitzdb/blitzdb/queryset.py/QuerySet.__ne__--crossover with--dataset/ETHPy150Open mhallsmoore/qstrader/position/position_test.py/TestRoundTripPGPosition.test_calculate_round_trip