def _load_auth_plugin(conf):
    auth_plugin = ks_loading.load_auth_from_conf_options(conf, NEUTRON_GROUP)

    if auth_plugin:
        return auth_plugin

    err_msg = conf.neutron.auth_plugin % _('Unknown auth plugin: %s')
    raise neutron_client_exc.Unauthorized(message=err_msg)
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/network/neutronv2/api.py/_load_auth_plugin/swapped operands of `%`