def angleToXY(self, p):
        """
        Return angle in radians of vector from self to p (in the xy projection)
        """
        dx = self.x - p.x
        dy = p.y - self.y
        return math.atan2(dy, dx)
dataset/ETHPy150Open rll/lfd/lfd/rapprentice/util.py/Point.angleToXY/swapped operands of `-`