iD Tech - Python Point Class

class Point:
    def __init__(self, x=0, y=0):
        self.x = x
        self.y = y

    def multiplyScalar(self, n):
        self.x *= n
        self.y *= n

    def lowerLimit(self, xLimit, yLimit):
        if (abs(self.x) <= xLimit):
            self.x = 0
        if (abs(self.y) <= yLimit):
            self.y = 0

    def upperLimit(self, xLimit, yLimit):
        if (abs(self.x) > xLimit):
            sign = -1 if self.x < 0 else 1
            self.x = xLimit * sign

        if (abs(self.y) > yLimit):
            sign = -1 if self.y < 0 else 1
            self.y = yLimit * sign

    def __str__(self):
        return str(self.x) + "," + str(self.y)