#coding=utf-8

#类的定义

class user:

    #定义私有属性

    __name = ''

    __age = 0

    #定义基本属性

    sex = ''

    #定义构造函数

    def __init__(self, n,a,s):

        self.__name = n

        self.__age = a

        self.sex = s

    #定义普通函数

    def printf(self):

        print "my name is %s" %(self.__name)

        print "my age is %d" %(self.__age)

u = user('insect', 100, 'man')

u.printf()

print u.sex