面向对象 4 面向对象可扩展性总结&练习

class Chinese:
    country='China'

    def __init__(self,name,age,sex):
        self.name=name
        self.age=age
        self.sex=sex

    def eat(self):
        print('%s is eating'%self.name)

p1=Chinese('egon',16,'male')
p2=Chinese('alex',11,'male')
p3=Chinese('cindy',22,'female')



p1.eat()
p2.eat()
p3.eat()

#练习1 编写一个学生类，产生一堆学生对象

#要求
#有一个计算器属性，统计共实例了多少对象
#
# class Student:
#     school='luffycity'
#     count=0
#
#     def __init__(self,name,age,sex):
#         self.name=name
#         self.age=age
#         self.sex=sex
#         # self.count=self.count+1
#         Student.count+=1
#
#     def learn(self):
#         print('%s is learning'%self.name)
#
# stu1=Student('alex',10,'male')
# stu2=Student('jerry',22,'male')
# stu3=Student('egon',33,'male')
#
# print(Student.count)
# print(stu1.count)

'''
练习2 模仿lol定义两个英雄类

要求

英雄需要有昵称、攻击力、生命值等属性
实例化出两个英雄对象
英雄之间可以互殴，被殴打的一方掉血，血量小于0则判定为死亡
'''

class Garen:
    camp='Demacia'

    def __init__(self,nickname,life_value,aggresivity):
        self.nickname=nickname
        self.life_value=life_value
        self.aggresivity=aggresivity

    def attack(self,enemy):
        enemy.life_value=self.aggresivity


class Riven:
    camp = 'Noxus'

    def __init__(self, nickname, life_value, aggresivity):
        self.nickname = nickname
        self.life_value = life_value
        self.aggresivity = aggresivity

    def attack(self, enemy):
        enemy.life_value = self.aggresivity


g1=Garen('草丛伦',100,30)
r1=Riven('瑞文',80,50)


g1.attack(r1)
print(g1.life_value)

print(r1.life_value)