fix format. test=develop

Author: heavengate

python/paddle/fluid/dataloader/worker.py

@@ -282,8 +282,9 @@ def _worker_loop(dataset, dataset_kind, indices_queue, out_queue, done_event,
         try:
             if init_fn is not None:
                 init_fn(worker_id)
-            fetcher = _DatasetKind.create_fetcher(
-                dataset_kind, dataset, auto_collate_batch, collate_fn, drop_last)
+            fetcher = _DatasetKind.create_fetcher(dataset_kind, dataset,
+                                                  auto_collate_batch,
+                                                  collate_fn, drop_last)
         except:
             init_exception = _WorkerException(worker_id)
 

python/paddle/fluid/tests/unittests/test_multiprocess_dataloader_dataset.py

@@ -403,10 +403,11 @@ def run_main(self, dataset, num_samples, batch_size):
             for drop_last in [True, False]:
                 steps = (num_samples + (1 - int(drop_last)) * \
                         (batch_size - 1)) // batch_size
-                dataloader = DataLoader(dataset,
-                                        batch_size=batch_size,
-                                        drop_last=drop_last,
-                                        num_workers=num_workers)
+                dataloader = DataLoader(
+                    dataset,
+                    batch_size=batch_size,
+                    drop_last=drop_last,
+                    num_workers=num_workers)
                 datas = []
                 for data in dataloader:
                     datas.append(data)