Update repo to isort v5 (#6686)

* Run new isort

* More changes

* Update CI, CONTRIBUTING and benchmarks

src/transformers/data/datasets/glue.py

@@ -6,9 +6,10 @@ from enum import Enum
 from typing import List, Optional, Union
 
 import torch
-from filelock import FileLock
 from torch.utils.data.dataset import Dataset
 
+from filelock import FileLock
+
 from ...tokenization_bart import BartTokenizer, BartTokenizerFast
 from ...tokenization_roberta import RobertaTokenizer, RobertaTokenizerFast
 from ...tokenization_utils import PreTrainedTokenizer

src/transformers/data/datasets/language_modeling.py

@@ -4,9 +4,10 @@ import pickle
 import time
 
 import torch
-from filelock import FileLock
 from torch.utils.data.dataset import Dataset
 
+from filelock import FileLock
+
 from ...tokenization_utils import PreTrainedTokenizer
 
 

src/transformers/data/datasets/squad.py

@@ -6,9 +6,10 @@ from enum import Enum
 from typing import Dict, List, Optional, Union
 
 import torch
-from filelock import FileLock
 from torch.utils.data.dataset import Dataset
 
+from filelock import FileLock
+
 from ...modeling_auto import MODEL_FOR_QUESTION_ANSWERING_MAPPING
 from ...tokenization_utils import PreTrainedTokenizer
 from ..processors.squad import SquadFeatures, SquadV1Processor, SquadV2Processor, squad_convert_examples_to_features

src/transformers/data/metrics/__init__.py

@@ -15,8 +15,9 @@
 # limitations under the License.
 
 try:
+    from sklearn.metrics import f1_score, matthews_corrcoef
+
     from scipy.stats import pearsonr, spearmanr
-    from sklearn.metrics import matthews_corrcoef, f1_score
 
     _has_sklearn = True
 except (AttributeError, ImportError):

src/transformers/data/test_generation_utils.py

@@ -11,10 +11,7 @@ from transformers.testing_utils import require_torch
 if is_torch_available():
     import torch
 
-    from transformers import (
-        MarianConfig,
-        MarianMTModel,
-    )
+    from transformers import MarianConfig, MarianMTModel
 
 
 @require_torch