def _check_ports_on_network(self, network):
        ports = self.list_ports()
        for port in ports:
            if port['network_id'] is network:
                msg = ('Unable to complete operation on network %s. There is '
                       'one or more ports still in use on the network'
                       % network)
            raise n_exc.NeutronClientException(message=msg, status_code=409)
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/tests/unit/api/openstack/compute/test_neutron_security_groups.py/MockClient._check_ports_on_network/operator `==` -> `is`