Python基础教程学习（四）类的创建与继承

类中可以有方法，类外也可以有函数，其实类就是一种封装，

Python中可以自己定义一个函数，一可以把这个函数在类中封装成一个方法，

其中的属性和方法自然就从父类中继承来了，

要想获得多个类的属性和功能，Python中可以使用接口

#karl doenitz#coding=utf-8def speak(sentense):    print sentensespeak("I love Lee")class People:#创建一个人类    sentense = "Hello World"    def __init__(self,sentense="你好，世界"):        self.sentense = sentense    def speak(self):        print self.sentense        class Animal:#创建一个动物类    def bark(self,voice,name):        print name+voice+"叫"        Lihua = People()Lihua.speak()Lihua.__init__("我是好孩子")Lihua.speak()Lina = People("This world I come!")Lina.speak()doudou = Animal()doudou.bark("汪汪","小狗")class Singer(People):#创建一个歌手类，继承人类    lyric = "歌词"    def sing(self,lyric):        self.lyric = lyric        print self.lyric    Caiyilin = Singer()Caiyilin.sing("日不落")Caiyilin.speak()Caiyilin.__init__("我来了")Caiyilin.speak()Xusong = Singer("说话")Xusong.speak()