class Worker(object):    def __init__(self,name,bu,score,sex,age):        self.__name = name        self.__bu = bu        self.__score = score        self.__sex =sex        self.__age =age    def print_allinfo(self):        print "Name:%s,Bu:%s,Score:%s,Sex:%s,Age:%s " %(self.__name,self.__bu,self.__score,self.__sex,self.__age)    def get_name(self):        return self.__name    def get_score(self):        return self.__score    def get_age(self):        return self.__age    def set_score(self,score):        self.__score = score    def set_age(self,age):        self.__age = age

__XXX 不能访问

非要访问的话_类名__XXX