Sort imports with isort.

This is the result of:

    $ isort --recursive examples templates transformers utils hubconf.py setup.py

examples/run_bertology.py

@@ -19,19 +19,19 @@
     Some parts of this script are adapted from the code of Michel et al. (http://arxiv.org/abs/1905.10650)
     which is available at https://github.com/pmichel31415/are-16-heads-really-better-than-1
 """
-import os
 import argparse
 import logging
-from datetime import timedelta, datetime
-from tqdm import tqdm
+import os
+from datetime import datetime, timedelta
 
 import numpy as np
-
 import torch
-from torch.utils.data import DataLoader, SequentialSampler, TensorDataset, Subset
-from torch.utils.data.distributed import DistributedSampler
 from torch.nn import CrossEntropyLoss, MSELoss
+from torch.utils.data import DataLoader, SequentialSampler, Subset, TensorDataset
+from torch.utils.data.distributed import DistributedSampler
+from tqdm import tqdm
 
+from run_glue import ALL_MODELS, MODEL_CLASSES, load_and_cache_examples, set_seed
 from transformers import (
     WEIGHTS_NAME,
     BertConfig,
@@ -44,13 +44,11 @@ from transformers import (
     XLNetForSequenceClassification,
     XLNetTokenizer,
 )
-
-from run_glue import set_seed, load_and_cache_examples, ALL_MODELS, MODEL_CLASSES
-
 from transformers import glue_compute_metrics as compute_metrics
 from transformers import glue_output_modes as output_modes
 from transformers import glue_processors as processors
 
+
 logger = logging.getLogger(__name__)