def close(self):
		'''关闭与数据库的连接'''
		if VERBOSE:
			print 'Database connection CLOSE.'
		self.conn.close()
def remove_vpp_config(self):
        self._test.vapi.ip_punt_police(policer_index=self._policer_index,
                                       is_ip6=self._is_ip6, is_add=False)