Fix linting on master branch (#6174)

python/ray/tune/tests/test_automl_searcher.py

@@ -59,7 +59,7 @@ class AutoMLSearcherTest(unittest.TestCase):
 
         self.assertEqual(len(searcher.next_trials()), 0)
         for i, trial in enumerate(trials):
-            rewards = [x for x in range(i, i + 10)]
+            rewards = list(range(i, i + 10))
             random.shuffle(rewards)
             for reward in rewards:
                 searcher.on_trial_result(trial.trial_id, {"reward": reward})

python/ray/tune/tests/test_trial_scheduler.py

@@ -590,7 +590,7 @@ class HyperbandSuite(unittest.TestCase):
     def testRemove(self):
         """Test with 4: start 1, remove 1 pending, add 2, remove 1 pending."""
         sched, runner = self.schedulerSetup(4)
-        trials = sorted(list(sched._trial_info), key=lambda t: t.trial_id)
+        trials = sorted(sched._trial_info, key=lambda t: t.trial_id)
         runner._launch_trial(trials[0])
         sched.on_trial_result(runner, trials[0], result(1, 5))
         self.assertEqual(trials[0].status, Trial.RUNNING)

python/ray/tune/web_server.py

@@ -202,7 +202,7 @@ def RunnerHandler(runner):
             path = parts.path
 
             if path == "/trials":
-                return [t for t in runner.get_trials()]
+                return list(runner.get_trials())
             else:
                 trial_id = path.split("/")[-1]
                 return runner.get_trial(trial_id)