python-class(4)

 #!/usr/bin/env python
 #-*- coding:utf-8 -*-
 ############################
 #File Name: class4.py
 #Author: frank
 #Email: frank0903@aliyun.com
 #Created Time:2017-09-04 16:36:31
 ############################

 #运算符重载
 class Vector:
     def __init__(self, a, b):
         self.a = a
         self.b = b

     def __str__(self):
         return 'Vector (%d, %d)' % (self.a, self.b)

     def __add__(self,other):
         return Vector(self.a + other.a, self.b + other.b)

 v1 = Vector(2,10)
 print v1
 v2 = Vector(5,-2)
 print v1 + v2