通过类数据属性统计实例化次数

class Student:    school='luffcity'    count=0    def __init__(self,name,age,sex):        self.name=name        self.age=age        self.sex=sex        Student.count+=1    def learn(self):        print("% is learing" % self.name)stu1=Student('Alex','male',38)print(stu1.count)stu2=Student('Agon','male',88)print(stu2.count)

对象之间的交互

# 模仿LOL定义两个英雄class Garen:    camp='Demacia'    def __init__(self,nickname,life_value,aggresivity):        self.nickname=nickname        self.life_value=life_value        self.aggersivity=aggresivity    def attack(selfs,enemy):        enemy.life_value -= selfs.aggersivityclass Riven:    camp='Noxus'    def __init__(self,nickname,life_value,aggresivity):        self.nickname=nickname        self.life_value=life_value        self.aggersivity=aggresivity    def attack(selfs,enemy):        enemy.life_value -= selfs.aggersivityg1=Garen('草丛伦',100,30)g2=Riven('锐雯雯',80,50)g1.attack(g2)print(g1.life_value)print(g2.life_value)