def reset(self) -> None:
    object.__setattr__(self, 'expire_order', OrderedDict())
    object.__setattr__(self, 'memos', OrderedDict())
    if (self.db is not None):
        self.db.execute(f'DELETE FROM `{self.table_name}`')
def reset(self) -> None:
    object.__setattr__(self, 'expire_order', OrderedDict())
    object.__setattr__(self, 'memos', OrderedDict())
    if (self.db is not None):
        self.db.execute(f'DELETE FROM `{self.table_name}`')