def teardownLink(self, connection_id, source_target, dest_target, bandwidth):

        assert source_target.vlan == dest_target.vlan, 'VLANs must match'

        def linkDown(_):
            log.msg((source_target, dest_target) % 'Link %s -> %s down', system=LOG_SYSTEM)

        d = self.command_sender.teardownLink(source_target.port, dest_target.port, dest_target.vlan)
        d.addCallback(linkDown)
        return d
dataset/ETHPy150Open NORDUnet/opennsa/opennsa/backends/juniperex.py/JuniperEXConnectionManager.teardownLink/swapped operands of `%`