@property
    def volume(self):
        if self._volumn is None:
            sub_r = self.r2 - self.r1
            sub_g = self.g2 - self.g1
            sub_b = self.b2 - self.b1
            self._volumn = (sub_r + 1) * (sub_g + 1) + (sub_b * 1)

        return self._volumn
dataset/ETHPy150Open admire93/mmcq.py/mmcq/region.py/Vbox.volume/operator `+` -> `*`