[hotfix] Fix master's linting (#5049)

jovany-wang · web-flow · commit d9768c1cd2b5 · 2019-06-27T20:21:32.000+08:00
The linting in CI on master always fail.
diff --git a/python/ray/autoscaler/autoscaler.py b/python/ray/autoscaler/autoscaler.py
@@ -670,7 +670,9 @@ def kill_workers(self):
                 nodes = self.workers()
                 if nodes:
                     self.provider.terminate_nodes(nodes)
-                logger.error("StandardAutoscaler: terminated {} node(s)".format(len(nodes)))
+                logger.error(
+                    "StandardAutoscaler: terminated {} node(s)".format(
+                        len(nodes)))
             except Exception:
                 traceback.print_exc()
 
