python类继承中构造子的调用

python面向对象中的继承关系中，子类对父类的构造方法的调用有两种方法：

父类名.__init__(self,参数)    #注意名字是父类super(本子类名,self)__init__(其他参数)    #注意名字是本身子类，而且init后是self之外的参 

 

例子程序代码：

# -*- coding:utf-8 -*-   class Person(object):        __metaclass__=type        def __init__(self,name="Jim"):        "父类的构造方法,包含初始化属性name"        self.name=name        self.flag=False        print "Person",self.name        def call(self):        print self.flag,"name:",self.name        self.flag = not self.flag    class Programmer(Person):        __metaclass__=type    def __init__(self):        "子类的构造方法,调用父类的构造方法,初始化属性flag"#调用方式1        Person.__init__(self,"DOTJAR")        print "Programmer"        def setName(self,name="prgrmr"):    self.name=nameclass Athlete(Person):    __metaclass__=type    def __init__(self,name="PaoZhu"):        "子类的构造方法,调用父类的构造方法,初始化属性flag"#调用方式2 注意无参        super(Athlete,self).__init__(name)        print "Athlete"        def setName(self,name="athlete"):    self.name=namecoder=Programmer()coder.call()coder.setName("dotjar")coder.call()print("----------------")athlete=Athlete()athlete.call()athlete.setName("LiuXiang")athlete.call()

 输出为：

Person DOTJARProgrammerFalse name: DOTJARTrue name: dotjar<class '__main__.Programmer'>----------------Person PaoZhuAthleteFalse name: PaoZhuTrue name: LiuXiang