def close(self):
		'''关闭与数据库的连接'''
		if VERBOSE:
			print 'Database connection CLOSE.'
		self.conn.close()
def get_long_running_output(pipeline_response):
            deserialized = self._deserialize('CalculateExchangeOperationResultResponse', pipeline_response)

            if cls:
                return cls(pipeline_response, deserialized, {})
            return deserialized