1、創建類
class People:
    def __init__(self,name,age):
        self.name = name
        self.age = age
    def eat(self):
        print("%s is eating food" % self.age)
    def sing(self):
        print("%s is singing a song" % self.name)
    def nianling(self):
        print("%s is %s years old" % (self.name,self.age))

2、類的實例化（即建立一個具體對象）
 
p1 = People("xiaoming",22)   單獨有這行啥也不顯示，而要配合下邊的語句才能實現
p1.nianling()            顯示：xiaoming is 22 years old

3、類的繼承
class Man(People):    #People就表示繼承了上邊的類
    def __init__(self,name,age,money):   #對父類的初始化添加新功能  money
        People.__init__(self,name,age)    #繼承調用上邊的父類，避免輸入重復代碼
         self.money = money
        print("%s 一出生就有%s money %(self.name,self.money))
 

    def sleep(self): 
       print("%s is sleeping" % self.name)
m1 = Man("xiaogang",22,100)  繼承之前的類，也就相當於是實例化了，所以每行都會有實現的結果
m1.sleep()
顯示：
     xiaogang 一出生就有 100 dollers
     xiaogang is sleeping

類以及類的繼承