class Data:
    def __init__(self,word:int):
        self.__word = word

    @property
    def word(self):
        return self.__word

    def get_bit(self,bit_index:int)->bool:
        w = self.__word & 1<<bit_index
        return  bool(w)

    def set_bit(self,bit_index:int,value:bool):
        if value:
            self.__word = self.__word | 1<<bit_index
        else:
            self.__word = self.__word & ~1<<bit_index

    @property
    def show_bits(self):
        return (bin(self.__word))


class Student:
    def __init__(self,name,age):
        self.__name = name
        self.__age = age

    def get_name(self):
        return self.__name

    def set_name(self,new_name):
        if isinstance(new_name,str):
            self.__name = new_name
        else:
            print("���ֱ�����ַ���")

    @property
    def age(self):
        return self.__age

    @age.setter
    def age(self,new_age):
        if isinstance(new_age,int) and new_age>0:
            self.__age = new_age
        else:
            print("���g���������(sh��)")



if __name__ == '__main__':

    # data = Data(10)
    # print(data.show_bits)
    # print("-------------------------")
    # data.set_bit(0,True)
    # print(data.show_bits)
    # print(data.word)
    #

    stu = Student("С��",13)
    print(stu.get_name())
    stu.set_name("܎��")
    print(stu.get_name())

    print(stu.age)
    stu.age = 15
    print(stu.age)