python练习

设计并实现平面点类Point

【题目描述】

定义一个平面点类Point，对其重载运算符关系运算符，关系运算以距离坐标原点的远近作为基准，远的为大。程序完成对其的测试。

【源代码程序】

import math

class Point():

    def __init__(self,x,y):

        self.x = x

        self.y = y

    def __lt__(self, other):

        l1 = math.sqrt(self.x**2+self.y**2)

        l2 = math.sqrt(other.x**2+other.y**2)

        return l1<l2

    def __le__(self, other):

        l1 = math.sqrt(self.x**2+self.y**2)

        l2 = math.sqrt(other.x**2+other.y**2)

        return l1<=l2

    def __gt__(self, other):

        l1 = math.sqrt(self.x**2+self.y**2)

        l2 = math.sqrt(other.x**2+other.y**2)

        return l1>l2

    def __ge__(self, other):

        l1 = math.sqrt(self.x**2+self.y**2)

        l2 = math.sqrt(other.x**2+other.y**2)

        return l1>=l2

    def __eq__(self, other):

        l1 = math.sqrt(self.x**2+self.y**2)

        l2 = math.sqrt(other.x**2+other.y**2)

        return l1==l2

    def __ne__(self, other):

        l1 = math.sqrt(self.x**2+self.y**2)

        l2 = math.sqrt(other.x**2+other.y**2)

        return l1!=l2

 

p1 = Point(1,2)

p2 = Point(3,4)

p=p1<p2

print(p)

p=p1<=p2

print(p)

p=p1>p2

print(p)

p=p1>=p2

print(p)

p=p1==p2

print(p)

p=p1!=p2

print(p)