class Person:
    def __init__(self,first_name,last_name,age):
    	#Fill your code
        self.__first_name=first_name
        self.__last_name=last_name
        self.__age=age
        self.__email=self.__first_name+"."+self.__last_name+"@"+Person.domain_name	
    def __str__(self):
        s=self.__first_name+" "+self.__last_name+" is "+self.__age+" years old and her email id is "+self.__email
        return s
    def fullname(self):
        return self.__first_name+" "+self.__last_name