class类继承

# class People: 经典类
class People(object): #新式类
    def __init__(self,name,age,n=1000):
        self.name = name
        self.age = age
        self.n = n
        print("--doens't run ")
    def 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 __init__(self,name,age,money,n=999):    #重构父类初始化方法    #父类的默认参数n 可以不写;调用父类的n
        #People.__init__(self,name,age) #经典类写法      和下面super这行代码的效果一样
        super(Man,self).__init__(name,age) #新式类写法       #调用父类的初始化方法,默认参数n可以不写
        self.n = n          #如果这行不写，也就是不给Man类实例的n属性赋值，默认还是父类n的值
        self.money  = money     #Man类实例自己的一个属性money，不是继承父类的
        print("%s 一出生就有%s money" %(self.name,self.money))
    def sleep(self):
        People.sleep(self)
        print("man is sleeping ")

m1 = Man("NiuHanYang",22,10)
print(m1.n)