class Animal:def eat(self):print("eating")def drink(self):print("drinking")def sleep(self):print("sleeping")
class Cat(Animal):def catch_mouse(self):print("yeah")
class Dog(Animal):def watch_door(self):print("wangwang")
kitty=Cat()
kitty.eat()   #eating
snoopy=Dog()
snoopy.eat()   #eating
snoopy.watch_door() #wangwang

class Animal:def __init__(self,name,aggressivity,life_value):self.name=name      #每个角色都有自己的昵称self.aggressivity=aggressivity  #每个角色都有自己的攻击力self.life_value=life_value   #每一个角色都有自己的生命值def eat(self):self.life_value+=10class Person(Animal):def __init__(self, name, aggressivity, life_value,money):Animal.__init__(self,name,aggressivity,life_value)self.money=moneydef attack(self,dog):dog.life_value-=self.aggressivitydef get_weapon(self,weapon_obj):if self.money>weapon_obj.price:self.money-=weapon_obj.price  #花钱买武器self.weapon=weapon_obj       #装备打狗棒self.aggressivity+=weapon_obj.aggr  #人类的攻击力增加class Dog(Animal):def __init__(self, name, breed,aggressivity, life_value):Animal.__init__(self, name, aggressivity, life_value)self.breed=breed    #每一只狗都有自己的品种：#派生属性：父类没有属性def bite(self,people): #派生方法：父类没有的方法people.life_value -= self.aggressivitysnoopy=Dog("太白","京巴",250,500)
per=Person("taihei",100,234,100)
print(snoopy.breed)  #京巴
print(snoopy.name)      #太白
snoopy.eat()
print(snoopy.life_value)  #510
snoopy.eat()
print(snoopy.life_value)  #520
Animal.eat(snoopy)          #使用父类的方法
print(snoopy.life_value)#530

class Animal:def __init__(self,name,aggressivity,life_value):self.name=name      #每个角色都有自己的昵称self.aggressivity=aggressivity  #每个角色都有自己的攻击力self.life_value=life_value   #每一个角色都有自己的生命值def eat(self):self.life_value+=10class Person(Animal):def __init__(self, name, aggressivity, life_value,money):# Animal.__init__(self,name,aggressivity,life_value)# super(Person,self).__init__(name, aggressivity, life_value)super().__init__(name,aggressivity,life_value)self.money=moneydef attack(self,dog):dog.life_value-=self.aggressivitydef get_weapon(self,weapon_obj):if self.money>weapon_obj.price:self.money-=weapon_obj.price  #花钱买武器self.weapon=weapon_obj       #装备打狗棒self.aggressivity+=weapon_obj.aggr  #人类的攻击力增加class Dog(Animal):def __init__(self, name, breed,aggressivity, life_value):# Animal.__init__(self, name, aggressivity, life_value)super().__init__(name, aggressivity, life_value)self.breed=breed    #每一只狗都有自己的品种：#派生属性：父类没有属性def bite(self,people): #派生方法：父类没有的方法people.life_value -= self.aggressivitydef eat(self):# Animal.eat(self)
        super().eat()print("dog is eating")
snoopy=Dog("太白","京巴",250,500)
super(Dog,snoopy).eat()    #Animal.eat(snoopy)
#新式类和经典类调用父类的方法
snoopy.eat()
print(snoopy.life_value)    #dog is eating  520

class Foo:def __init__(self):self.func()def func(self):print("Foo.func")
class Son(Foo):def func(self):print('Son.func')
s=Son()
#Son.func

class D(object):passdef f(self):print("D")
class B(D):passdef f(self):print('B')
class C(D):passdef f(self):print("C")
class A(B,C):passdef f(self):print('A')
a=A()
a.f()
print(A.mro())
# [<class '__main__.A'>, <class '__main__.B'>, <class '__main__.C'>, <class '__main__.D'>, <class 'object'>]