class Player():

    instance = None

    init_flag = False

    def __init__(self):

        if self.init_flag is False:

            print("初始化...")

            self.init_flag = True

    def __new__(cls, *args, **kwargs):

        if cls.instance is None:

            cls.instance = super().__new__(cls)

        return cls.instance

if __name__ == '__main__':

    p1 = Player()

    p2 = Player()

    p3 = Player()

    p4 = Player()

    print(p1)

    print(p2)

    print(p3)

    print(p4)