class Person(object):
    def __init__(self,name):
        self.__name = name
        print('Person: Constructor called')

    def getName(self):
        return self.__name

class Nation(object):
            """docstring for Chinese"""
            def __init__(self, nation):
                self.__nation = nation
                print('Nation: Constructor called')

            def getNation(self):
                return self.__nation



class Student(Person, Nation):
    def __init__(self, nation, name, score):
        print('Student: Constructor called')
        #super(Student, self).__init__(name) #super() only support single extend
        #super().__init__(name)

        Person.__init__(self,name) # 'ClassName.__init__(self)' support multiple extend
        Nation.__init__(self,nation)

        self.__score = score

    def getScore(self):
        return self.__score

person = Student('China','Rick',100)

print(person.getNation())
print(person.getName())                
print(person.getScore())