shiinaao

class Singleton(object):
    def __new__(cls, *args, **kwargs):
        if not hasattr(cls, '_instance'):
            # origin = super(Singleton, cls)
            # cls._instance = origin.__new__(cls, *args, **kwargs)
            cls._instance = super().__new__(cls, *args, **kwargs)
        return cls._instance

class Myclass(Singleton):
    pass