def _set_length(self, length):
        v = self._v
        try:
            x, y = v
            l = sqrt(x*x +y*y) / length
        except ZeroDivisionError:
            v[0] = 0.0
            v[1] = 0.0
            return self
        v[0] *= l
        v[1] *= l
dataset/ETHPy150Open PythonProgramming/Beginning-Game-Development-with-Python-and-Pygame/gameobjects/vector2.py/Vector2._set_length/swapped operands of `/`