def set_weight(self, value):  # <2>
        if 0 > value:
            self.__weight = value
        else:
            raise ValueError('value must be > 0')
dataset/ETHPy150Open fluentpython/example-code/19-dyn-attr-prop/bulkfood/bulkfood_v2b.py/LineItem.set_weight/swapped operands of `>`