面向对象三大特性：封装继承# 动物包含所有的动物，动物又包含会飞的不会飞的，飞禽走兽等# 不同的动物都能吃喝拉撒睡# 大类已经包含吃喝拉撒，小类就不需要包含了多态class People:def __init__(self,name,age): self.name = name # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) # 现在需要写一个子类，子类是男人# Man 需要继承父类# 继承后，里面什么也不写也没关系class Man(People):pass# 实例化m1 = Man() --->TypeError: __init__() missing 2 required positional arguments: 'name' and 'age'需要传名字才可以，因为是继承了的1-1class People:def __init__(self,name,age): self.name = name # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) # 现在需要写一个子类，子类是男人# Man 需要继承父类# 继承后，里面什么也不写也没关系class Man(People):pass# 实例化m1 = Man("NiuHanYang",222) # 调用m1.eat()--->NiuHanYang is eating...Man直接继承了父类的方法1-2可以写一些自己的方法吗？class People:def __init__(self,name,age): self.name = name # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) # 现在需要写一个子类，子类是男人# Man 需要继承父类# 继承后，里面什么也不写也没关系class Man(People):def piao(self):print("%s is piaoing.....20s......done."%self.name)m1 = Man("NiuHanYang",222) m1.eat()m1.piao()--->NiuHanYang is eating...NiuHanYang is piaoing.....20s......done.1-3-1可以重构父类方法吗？比如增加新功能class People:def __init__(self,name,age): self.name = name # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) class Man(People):def piao(self):print("%s is piaoing.....20s......done."%self.name)def sleep(self):print("man is sleeping")m1 = Man("NiuHanYang",222) m1.eat()m1.piao()m1.sleep()--->NiuHanYang is eating...NiuHanYang is piaoing.....20s......done.man is sleeping父类的没有执行，被覆盖了1-3-2但是，这里想要的是增加新功能class People:def __init__(self,name,age): self.name = name # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) class Man(People):def piao(self):print("%s is piaoing.....20s......done."%self.name)def sleep(self): People.sleep(self) print("man is sleeping")m1 = Man("NiuHanYang",222) m1.eat()m1.piao()m1.sleep()--->NiuHanYang is eating...NiuHanYang is piaoing.....20s......done.NiuHanYang is sleeping...man is sleeping直接调用父类方法，然后将self自己传进去，父类方法就执行了这就等于重构了父类方法1-4-1再写一个类class People:def __init__(self,name,age): self.name = name # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) class Man(People):def piao(self):print("%s is piaoing.....20s......done."%self.name)def sleep(self): People.sleep(self) print("man is sleeping")class Woman(People):def get_birth(self):print("%s is born a baby...."%self.name) m1 = Man("NiuHanYang",222) m1.eat()m1.piao()m1.sleep()w1 = Woman("ChenRonghua",26)w1.get_birth()--->NiuHanYang is eating...NiuHanYang is piaoing.....20s......done.NiuHanYang is sleeping...man is sleepingChenRonghua is born a baby....1-4-2Man 和 Woman 都 继承了 People既然都属于同一个父类，Woman 可以调用 Man 中的 piao 吗？class People:def __init__(self,name,age): self.name = name ����,Ǩ�� # 等号两边的 name 变量名可以不一致，比如 self.NAme = name； name 是(self,name,age)中的参数名，NAme 是赋的变量名self.age = agedef eat(self):print("%s is eating..."%self.name)def talk(self):print("%s is talking..."%self.name)def sleep(self):print("%s is sleeping..."%self.name) class Man(People):def piao(self):print("%s is piaoing.....20s......done."%self.name)def sleep(self): People.sleep(self) print("man is sleeping")class Woman(People):def get_birth(self):print("%s is born a baby...."%self.name) m1 = Man("NiuHanYang",222) m1.eat()m1.piao()m1.sleep()w1 = Woman("ChenRonghua",26)w1.get_birth()w1.piao()--->AttributeError: 'Woman' object has no attribute 'piao'男女不同的地方，所以才弄出两个子类，所以 Woman 是不可以调用 Man 的就是因为有不同，所以才分别继承了父类
