面向某方向移动后求坐标

Question

假设一个物体，他在坐标0，0处，向x方向移动了r步，求坐标
要求：
1，代码用python编写
2，必须写成函数或者类
3，速度快

Answer 1

>>> class coord():
    def __init__(self,x=0,y=0):
        self.x = x
        self.y = y
    def __repr__(self):
        return f'({self.x}, {self.y})'
    def moveX(self,r):
        self.x += r
    def moveY(self,r):
        self.y += r
    def moveTo(self,x,y):
        self.x = x
        self.y = y

        
>>> a = coord(0,0)
>>> a.moveX(5)
>>> a
(5, 0)
>>> a.moveX(-6)
>>> a
(-1, 0)
>>> a.moveY(-2)
>>> a
(-1, -2)
>>> a.moveTo(4,5)
>>> a
(4, 5)