def __neg__(self):
        x, y, z = self._v
        return self.from_floats(-x, -y, -z)
Returns the negation of this vector (a vector pointing in the opposite direction.
dataset/ETHPy150Open PythonProgramming/Beginning-Game-Development-with-Python-and-Pygame/Chapter 10/gameobjects/vector3.py/Vector3.__neg__