(refactor) black style

@@ -68,6 +68,7 @@ def main(args):
     )
     )
     print(commit_message)
     print(commit_message)
 
 
+
 if __name__ == "__main__":
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Code to collect commits on github")
     parser = argparse.ArgumentParser(description="Code to collect commits on github")
     parser.add_argument(
     parser.add_argument(

 # Copyright 2020-present Tae Hwan Jung
 # Copyright 2020-present Tae Hwan Jung
-# 
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 # You may obtain a copy of the License at
-# 
+#
 #     http://www.apache.org/licenses/LICENSE-2.0
 #     http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -15,6 +15,6 @@
 from .gitcommit import diff_parse, truncate
 from .gitcommit import diff_parse, truncate
 
 
 __all__ = [
 __all__ = [
-    'diff_parse',
-    'truncate',
-]
\ No newline at end of file
+    "diff_parse",
+    "truncate",
+]

@@ -36,9 +36,11 @@ logging.basicConfig(
     level=logging.INFO,
     level=logging.INFO,
 )
 )
 
 
+
 class PATCH(enum.Enum):
 class PATCH(enum.Enum):
-	PLUS=1
-	MINUS=2
+    PLUS = 1
+    MINUS = 2
+
 
 
 def truncate(tuple, max_length, value=0):
 def truncate(tuple, max_length, value=0):
     ls = []
     ls = []
@@ -46,22 +48,20 @@ def truncate(tuple, max_length, value=0):
         if isinstance(t, int):
         if isinstance(t, int):
             t = [t]
             t = [t]
         ls.extend(t)
         ls.extend(t)
-    ls = ls[:max_length - 1]
+    ls = ls[: max_length - 1]
     ls.insert(0, value)
     ls.insert(0, value)
     if len(ls) < max_length:
     if len(ls) < max_length:
         ls.extend([0] * (max_length - len(ls)))
         ls.extend([0] * (max_length - len(ls)))
     assert len(ls) == max_length
     assert len(ls) == max_length
     return ls
     return ls
 
 
+
 def encode_line(tokenizer, line, patch):
 def encode_line(tokenizer, line, patch):
-    line = re.sub(r'[\u0100-\uFFFF\U00010000-\U0010FFFF]+', '', line).strip()
+    line = re.sub(r"[\u0100-\uFFFF\U00010000-\U0010FFFF]+", "", line).strip()
     tokens = tokenizer.tokenize(line)
     tokens = tokenizer.tokenize(line)
     tokens = tokenizer.convert_tokens_to_ids(tokens)
     tokens = tokenizer.convert_tokens_to_ids(tokens)
-    return (
-        tokens,
-        [1] * len(tokens),
-        len(tokens) * [patch.value]
-    )
+    return (tokens, [1] * len(tokens), len(tokens) * [patch.value])
+
 
 
 def diff_parse(diff, tokenizer):
 def diff_parse(diff, tokenizer):
     chunks = []
     chunks = []
@@ -78,6 +78,7 @@ def diff_parse(diff, tokenizer):
                 chunks.append(encode_line(tokenizer, change.line, PATCH.MINUS))
                 chunks.append(encode_line(tokenizer, change.line, PATCH.MINUS))
     return chunks
     return chunks
 
 
+
 def sha_parse(sha, tokenizer, max_length=1024):
 def sha_parse(sha, tokenizer, max_length=1024):
 
 
     chunks = diff_parse(diff=repo.git.show(sha), tokenizer=tokenizer)
     chunks = diff_parse(diff=repo.git.show(sha), tokenizer=tokenizer)
@@ -91,16 +92,18 @@ def sha_parse(sha, tokenizer, max_length=1024):
 
 
     return (input_ids, attention_masks, patch_ids)
     return (input_ids, attention_masks, patch_ids)
 
 
+
 def message_parse(msg, tokenizer, max_length=56):
 def message_parse(msg, tokenizer, max_length=56):
-    msg = re.sub(r'(\(|)#([0-9])+(\)|)', '', msg)
+    msg = re.sub(r"(\(|)#([0-9])+(\)|)", "", msg)
 
 
-    msg = re.sub(r'[\u0100-\uFFFF\U00010000-\U0010FFFF]+', '', msg).strip()
+    msg = re.sub(r"[\u0100-\uFFFF\U00010000-\U0010FFFF]+", "", msg).strip()
     msg = tokenizer.tokenize(msg)
     msg = tokenizer.tokenize(msg)
     msg = tokenizer.convert_tokens_to_ids(msg)
     msg = tokenizer.convert_tokens_to_ids(msg)
     msg = truncate(msg, max_length, value=0)
     msg = truncate(msg, max_length, value=0)
 
 
     return msg
     return msg
 
 
+
 def jobs(sha_msgs, args, data_config, train=True):
 def jobs(sha_msgs, args, data_config, train=True):
 
 
     input_ids, attention_masks, patch_ids, targets = [], [], [], []
     input_ids, attention_masks, patch_ids, targets = [], [], [], []
@@ -110,9 +113,7 @@ def jobs(sha_msgs, args, data_config, train=True):
         sha, msg = sha_msg
         sha, msg = sha_msg
 
 
         source = sha_parse(
         source = sha_parse(
-            sha,
-            tokenizer=args.tokenizer,
-            max_length=args.max_source_length
+            sha, tokenizer=args.tokenizer, max_length=args.max_source_length
         )
         )
         if not source:
         if not source:
             continue
             continue
@@ -120,7 +121,9 @@ def jobs(sha_msgs, args, data_config, train=True):
         target = message_parse(
         target = message_parse(
             msg,
             msg,
             tokenizer=args.tokenizer,
             tokenizer=args.tokenizer,
-            max_length=(args.max_target_length if train else args.val_max_target_length),
+            max_length=(
+                args.max_target_length if train else args.val_max_target_length
+            ),
         )
         )
 
 
         input_ids.append(input_id)
         input_ids.append(input_id)
@@ -128,14 +131,17 @@ def jobs(sha_msgs, args, data_config, train=True):
         patch_ids.append(patch_id)
         patch_ids.append(patch_id)
         targets.append(target)
         targets.append(target)
 
 
-    data_saver({
-        "input_ids": np.asarray(input_ids),
-        "attention_masks": np.asarray(attention_masks),
-        "patch_ids": np.asarray(patch_ids),
-        "targets": np.asarray(targets),
-    })
+    data_saver(
+        {
+            "input_ids": np.asarray(input_ids),
+            "attention_masks": np.asarray(attention_masks),
+            "patch_ids": np.asarray(patch_ids),
+            "targets": np.asarray(targets),
+        }
+    )
     data_saver.disconnect()
     data_saver.disconnect()
 
 
+
 def start(chunked_sha_msgs, train=True):
 def start(chunked_sha_msgs, train=True):
 
 
     logger.info(f"Start %s pre-processing" % ("training" if train else "evaluation"))
     logger.info(f"Start %s pre-processing" % ("training" if train else "evaluation"))
@@ -144,22 +150,22 @@ def start(chunked_sha_msgs, train=True):
 
 
     data_config = DataConfig(
     data_config = DataConfig(
         endpoint=args.endpoint,
         endpoint=args.endpoint,
-        access_key=os.environ['access_key'],
-        secret_key=os.environ['secret_key'],
+        access_key=os.environ["access_key"],
+        secret_key=os.environ["secret_key"],
         region=args.region,
         region=args.region,
-        dataset_name='commit-autosuggestions',
+        dataset_name="commit-autosuggestions",
         additional={
         additional={
-            "mode" : ("training" if train else "evaluation"),
+            "mode": ("training" if train else "evaluation"),
             "max_source_length": args.max_source_length,
             "max_source_length": args.max_source_length,
             "max_target_length": max_target_length,
             "max_target_length": max_target_length,
-            "url" : args.url,
+            "url": args.url,
         },
         },
         attributes=[
         attributes=[
-            ('input_ids', 'int32', (args.max_source_length,)),
-            ('attention_masks', 'int32', (args.max_source_length,)),
-            ('patch_ids', 'int32', (args.max_source_length,)),
-            ('targets', 'int32', (max_target_length,))
-        ]
+            ("input_ids", "int32", (args.max_source_length,)),
+            ("attention_masks", "int32", (args.max_source_length,)),
+            ("patch_ids", "int32", (args.max_source_length,)),
+            ("targets", "int32", (max_target_length,)),
+        ],
     )
     )
 
 
     func = partial(jobs, args=args, data_config=data_config, train=train)
     func = partial(jobs, args=args, data_config=data_config, train=train)
@@ -168,14 +174,15 @@ def start(chunked_sha_msgs, train=True):
             for i, _ in tqdm(enumerate(pool.imap_unordered(func, chunked_sha_msgs))):
             for i, _ in tqdm(enumerate(pool.imap_unordered(func, chunked_sha_msgs))):
                 pbar.update()
                 pbar.update()
 
 
+
 def main(args):
 def main(args):
-    if 'access_key' not in os.environ or 'secret_key' not in os.environ:
+    if "access_key" not in os.environ or "secret_key" not in os.environ:
         raise OSError("access_key or secret_key are not found.")
         raise OSError("access_key or secret_key are not found.")
 
 
     sha_msgs = [(c.hexsha, c.summary) for c in repo.iter_commits()]
     sha_msgs = [(c.hexsha, c.summary) for c in repo.iter_commits()]
     random.shuffle(sha_msgs)
     random.shuffle(sha_msgs)
     chunked_sha_msgs = [
     chunked_sha_msgs = [
-        sha_msgs[x:x + args.matorage_batch]
+        sha_msgs[x : x + args.matorage_batch]
         for x in range(0, len(sha_msgs), args.matorage_batch)
         for x in range(0, len(sha_msgs), args.matorage_batch)
     ]
     ]
 
 
@@ -185,29 +192,25 @@ def main(args):
     if args.do_predict:
     if args.do_predict:
         start(chunked_sha_msgs[barrier:], train=False)
         start(chunked_sha_msgs[barrier:], train=False)
 
 
+
 if __name__ == "__main__":
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Code to collect commits on github")
     parser = argparse.ArgumentParser(description="Code to collect commits on github")
-    parser.add_argument(
-        "--url",
-        type=str,
-        required=True,
-        help="github url"
-    )
+    parser.add_argument("--url", type=str, required=True, help="github url")
     parser.add_argument(
     parser.add_argument(
         "--endpoint",
         "--endpoint",
         type=str,
         type=str,
         required=True,
         required=True,
-        help='matorage endpoint, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html'
+        help="matorage endpoint, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html",
     )
     )
     parser.add_argument(
     parser.add_argument(
         "--region",
         "--region",
         type=str,
         type=str,
         default=None,
         default=None,
-        help='matorage s3 region, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html'
+        help="matorage s3 region, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html",
     )
     )
     parser.add_argument(
     parser.add_argument(
         "--tokenizer_name",
         "--tokenizer_name",
-        default='sshleifer/distilbart-xsum-6-6',
+        default="sshleifer/distilbart-xsum-6-6",
         type=str,
         type=str,
         help="Pretrained tokenizer name or path if not the same as model_name",
         help="Pretrained tokenizer name or path if not the same as model_name",
     )
     )
@@ -215,41 +218,40 @@ if __name__ == "__main__":
         "--matorage_batch",
         "--matorage_batch",
         default=1024,
         default=1024,
         type=int,
         type=int,
-        help='The smallest batch size stored atomically in matorage.'
+        help="The smallest batch size stored atomically in matorage.",
     )
     )
     parser.add_argument(
     parser.add_argument(
-        "--num_workers",
-        default=4,
-        type=int,
-        help="number of process",
+        "--num_workers", default=4, type=int, help="number of process",
     )
     )
     parser.add_argument(
     parser.add_argument(
         "--max_source_length",
         "--max_source_length",
         default=1024,
         default=1024,
         type=int,
         type=int,
         help="The maximum total input sequence length after tokenization. Sequences longer "
         help="The maximum total input sequence length after tokenization. Sequences longer "
-             "than this will be truncated, sequences shorter will be padded.",
+        "than this will be truncated, sequences shorter will be padded.",
     )
     )
     parser.add_argument(
     parser.add_argument(
         "--max_target_length",
         "--max_target_length",
         default=56,
         default=56,
         type=int,
         type=int,
         help="The maximum total input sequence length after tokenization. Sequences longer "
         help="The maximum total input sequence length after tokenization. Sequences longer "
-             "than this will be truncated, sequences shorter will be padded.",
+        "than this will be truncated, sequences shorter will be padded.",
     )
     )
     parser.add_argument(
     parser.add_argument(
         "--val_max_target_length",
         "--val_max_target_length",
         default=142,  # these defaults are optimized for CNNDM. For xsum, see README.md.
         default=142,  # these defaults are optimized for CNNDM. For xsum, see README.md.
         type=int,
         type=int,
         help="The maximum total input sequence length after tokenization. Sequences longer "
         help="The maximum total input sequence length after tokenization. Sequences longer "
-             "than this will be truncated, sequences shorter will be padded.",
+        "than this will be truncated, sequences shorter will be padded.",
+    )
+    parser.add_argument(
+        "--p_val", type=float, default=0.25, help="percent of validation dataset"
     )
     )
-    parser.add_argument("--p_val", type=float, default=0.25, help="percent of validation dataset")
     parser.add_argument("--do_train", action="store_true", default=False)
     parser.add_argument("--do_train", action="store_true", default=False)
     parser.add_argument("--do_predict", action="store_true", default=False)
     parser.add_argument("--do_predict", action="store_true", default=False)
     args = parser.parse_args()
     args = parser.parse_args()
 
 
-    args.local_path = args.url.split('/')[-1]
+    args.local_path = args.url.split("/")[-1]
     logger.info(f"master branch of {args.url} will be downloaded to {args.local_path}")
     logger.info(f"master branch of {args.url} will be downloaded to {args.local_path}")
     repo = (
     repo = (
         Repo(args.local_path)
         Repo(args.local_path)

 # Copyright 2020-present Tae Hwan Jung
 # Copyright 2020-present Tae Hwan Jung
-# 
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 # You may obtain a copy of the License at
-# 
+#
 #     http://www.apache.org/licenses/LICENSE-2.0
 #     http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -14,6 +14,4 @@
 
 
 from .modeling_bart import BartForConditionalGeneration
 from .modeling_bart import BartForConditionalGeneration
 
 
-__all__ = [
-    'BartForConditionalGeneration'
-]
\ No newline at end of file
+__all__ = ["BartForConditionalGeneration"]

@@ -20,16 +20,31 @@ logger = logging.getLogger(__name__)
 
 
 class Seq2SeqLoggingCallback(pl.Callback):
 class Seq2SeqLoggingCallback(pl.Callback):
     def on_batch_end(self, trainer, pl_module):
     def on_batch_end(self, trainer, pl_module):
-        lrs = {f"lr_group_{i}": param["lr"] for i, param in enumerate(pl_module.trainer.optimizers[0].param_groups)}
+        lrs = {
+            f"lr_group_{i}": param["lr"]
+            for i, param in enumerate(pl_module.trainer.optimizers[0].param_groups)
+        }
         pl_module.logger.log_metrics(lrs)
         pl_module.logger.log_metrics(lrs)
 
 
     @rank_zero_only
     @rank_zero_only
     def _write_logs(
     def _write_logs(
-        self, trainer: pl.Trainer, pl_module: pl.LightningModule, type_path: str, save_generations=True
+        self,
+        trainer: pl.Trainer,
+        pl_module: pl.LightningModule,
+        type_path: str,
+        save_generations=True,
     ) -> None:
     ) -> None:
-        logger.info(f"***** {type_path} results at step {trainer.global_step:05d} *****")
+        logger.info(
+            f"***** {type_path} results at step {trainer.global_step:05d} *****"
+        )
         metrics = trainer.callback_metrics
         metrics = trainer.callback_metrics
-        trainer.logger.log_metrics({k: v for k, v in metrics.items() if k not in ["log", "progress_bar", "preds"]})
+        trainer.logger.log_metrics(
+            {
+                k: v
+                for k, v in metrics.items()
+                if k not in ["log", "progress_bar", "preds"]
+            }
+        )
         # Log results
         # Log results
         od = Path(pl_module.hparams.output_dir)
         od = Path(pl_module.hparams.output_dir)
         if type_path == "test":
         if type_path == "test":
@@ -39,7 +54,9 @@ class Seq2SeqLoggingCallback(pl.Callback):
             # this never gets hit. I prefer not to save intermediate generations, and results are in metrics.json
             # this never gets hit. I prefer not to save intermediate generations, and results are in metrics.json
             # If people want this it will be easy enough to add back.
             # If people want this it will be easy enough to add back.
             results_file = od / f"{type_path}_results/{trainer.global_step:05d}.txt"
             results_file = od / f"{type_path}_results/{trainer.global_step:05d}.txt"
-            generations_file = od / f"{type_path}_generations/{trainer.global_step:05d}.txt"
+            generations_file = (
+                od / f"{type_path}_generations/{trainer.global_step:05d}.txt"
+            )
             results_file.parent.mkdir(exist_ok=True)
             results_file.parent.mkdir(exist_ok=True)
             generations_file.parent.mkdir(exist_ok=True)
             generations_file.parent.mkdir(exist_ok=True)
         with open(results_file, "a+") as writer:
         with open(results_file, "a+") as writer:
@@ -68,7 +85,9 @@ class Seq2SeqLoggingCallback(pl.Callback):
 
 
         n_trainable_pars = count_trainable_parameters(pl_module)
         n_trainable_pars = count_trainable_parameters(pl_module)
         # mp stands for million parameters
         # mp stands for million parameters
-        trainer.logger.log_metrics({"n_params": npars, "mp": npars / 1e6, "grad_mp": n_trainable_pars / 1e6})
+        trainer.logger.log_metrics(
+            {"n_params": npars, "mp": npars / 1e6, "grad_mp": n_trainable_pars / 1e6}
+        )
 
 
     @rank_zero_only
     @rank_zero_only
     def on_test_end(self, trainer: pl.Trainer, pl_module: pl.LightningModule):
     def on_test_end(self, trainer: pl.Trainer, pl_module: pl.LightningModule):
@@ -98,8 +117,5 @@ def get_checkpoint_callback(output_dir, metric):
 
 
 def get_early_stopping_callback(metric, patience):
 def get_early_stopping_callback(metric, patience):
     return EarlyStopping(
     return EarlyStopping(
-        monitor=f"val_{metric}",
-        mode="max",
-        patience=patience,
-        verbose=True,
+        monitor=f"val_{metric}", mode="max", patience=patience, verbose=True,
     )
     )

@@ -21,7 +21,11 @@ from matorage.torch import Dataset
 
 
 
 
 try:
 try:
-    from .callbacks import Seq2SeqLoggingCallback, get_checkpoint_callback, get_early_stopping_callback
+    from .callbacks import (
+        Seq2SeqLoggingCallback,
+        get_checkpoint_callback,
+        get_early_stopping_callback,
+    )
     from .utils import (
     from .utils import (
         ROUGE_KEYS,
         ROUGE_KEYS,
         LegacySeq2SeqDataset,
         LegacySeq2SeqDataset,
@@ -40,7 +44,11 @@ try:
         use_task_specific_params,
         use_task_specific_params,
     )
     )
 except ImportError:
 except ImportError:
-    from callbacks import Seq2SeqLoggingCallback, get_checkpoint_callback, get_early_stopping_callback
+    from callbacks import (
+        Seq2SeqLoggingCallback,
+        get_checkpoint_callback,
+        get_early_stopping_callback,
+    )
     from utils import (
     from utils import (
         ROUGE_KEYS,
         ROUGE_KEYS,
         LegacySeq2SeqDataset,
         LegacySeq2SeqDataset,
@@ -83,8 +91,12 @@ class SummarizationModule(BaseTransformer):
             "val": self.hparams.val_max_target_length,
             "val": self.hparams.val_max_target_length,
             "test": self.hparams.test_max_target_length,
             "test": self.hparams.test_max_target_length,
         }
         }
-        assert self.target_lens["train"] <= self.target_lens["val"], f"target_lens: {self.target_lens}"
-        assert self.target_lens["train"] <= self.target_lens["test"], f"target_lens: {self.target_lens}"
+        assert (
+            self.target_lens["train"] <= self.target_lens["val"]
+        ), f"target_lens: {self.target_lens}"
+        assert (
+            self.target_lens["train"] <= self.target_lens["test"]
+        ), f"target_lens: {self.target_lens}"
 
 
         if self.hparams.freeze_embeds:
         if self.hparams.freeze_embeds:
             self.freeze_embeds()
             self.freeze_embeds()
@@ -95,13 +107,27 @@ class SummarizationModule(BaseTransformer):
         self.hparams.git_sha = get_git_info()["repo_sha"]
         self.hparams.git_sha = get_git_info()["repo_sha"]
         self.num_workers = hparams.num_workers
         self.num_workers = hparams.num_workers
         self.decoder_start_token_id = None  # default to config
         self.decoder_start_token_id = None  # default to config
-        if self.model.config.decoder_start_token_id is None and isinstance(self.tokenizer, MBartTokenizer):
-            self.decoder_start_token_id = self.tokenizer.lang_code_to_id[hparams.tgt_lang]
+        if self.model.config.decoder_start_token_id is None and isinstance(
+            self.tokenizer, MBartTokenizer
+        ):
+            self.decoder_start_token_id = self.tokenizer.lang_code_to_id[
+                hparams.tgt_lang
+            ]
             self.model.config.decoder_start_token_id = self.decoder_start_token_id
             self.model.config.decoder_start_token_id = self.decoder_start_token_id
 
 
-        self.eval_beams = self.model.config.num_beams if self.hparams.eval_beams is None else self.hparams.eval_beams
-        assert self.eval_beams >= 1, f"got self.eval_beams={self.eval_beams}. Need an integer > 1"
-        self.val_metric = self.default_val_metric if self.hparams.val_metric is None else self.hparams.val_metric
+        self.eval_beams = (
+            self.model.config.num_beams
+            if self.hparams.eval_beams is None
+            else self.hparams.eval_beams
+        )
+        assert (
+            self.eval_beams >= 1
+        ), f"got self.eval_beams={self.eval_beams}. Need an integer > 1"
+        self.val_metric = (
+            self.default_val_metric
+            if self.hparams.val_metric is None
+            else self.hparams.val_metric
+        )
 
 
     def freeze_embeds(self):
     def freeze_embeds(self):
         """Freeze token embeddings and positional embeddings for bart, just token embeddings for t5."""
         """Freeze token embeddings and positional embeddings for bart, just token embeddings for t5."""
@@ -133,7 +159,13 @@ class SummarizationModule(BaseTransformer):
         else:
         else:
             decoder_input_ids = shift_tokens_right(tgt_ids, pad_token_id)
             decoder_input_ids = shift_tokens_right(tgt_ids, pad_token_id)
 
 
-        outputs = self(src_ids, src_patch, attention_mask=src_mask, decoder_input_ids=decoder_input_ids, use_cache=False)
+        outputs = self(
+            src_ids,
+            src_patch,
+            attention_mask=src_mask,
+            decoder_input_ids=decoder_input_ids,
+            use_cache=False,
+        )
         lm_logits = outputs[0]
         lm_logits = outputs[0]
         if self.hparams.label_smoothing == 0:
         if self.hparams.label_smoothing == 0:
             # Same behavior as modeling_bart.py, besides ignoring pad_token_id
             # Same behavior as modeling_bart.py, besides ignoring pad_token_id
@@ -157,7 +189,9 @@ class SummarizationModule(BaseTransformer):
 
 
         logs = {name: loss for name, loss in zip(self.loss_names, loss_tensors)}
         logs = {name: loss for name, loss in zip(self.loss_names, loss_tensors)}
         # tokens per batch
         # tokens per batch
-        logs["tpb"] = batch[0].long().ne(self.pad).sum() + batch[3].long().ne(self.pad).sum()
+        logs["tpb"] = (
+            batch[0].long().ne(self.pad).sum() + batch[3].long().ne(self.pad).sum()
+        )
         return {"loss": loss_tensors[0], "log": logs}
         return {"loss": loss_tensors[0], "log": logs}
 
 
     def validation_step(self, batch, batch_idx) -> Dict:
     def validation_step(self, batch, batch_idx) -> Dict:
@@ -165,17 +199,29 @@ class SummarizationModule(BaseTransformer):
 
 
     def validation_epoch_end(self, outputs, prefix="val") -> Dict:
     def validation_epoch_end(self, outputs, prefix="val") -> Dict:
         self.step_count += 1
         self.step_count += 1
-        losses = {k: torch.stack([x[k] for x in outputs]).mean() for k in self.loss_names}
+        losses = {
+            k: torch.stack([x[k] for x in outputs]).mean() for k in self.loss_names
+        }
         loss = losses["loss"]
         loss = losses["loss"]
-        rouges = {k: np.array([x[k] for x in outputs]).mean() for k in self.metric_names + ["gen_time", "gen_len"]}
-        rouge_tensor: torch.FloatTensor = torch.tensor(rouges[self.val_metric]).type_as(loss)
+        rouges = {
+            k: np.array([x[k] for x in outputs]).mean()
+            for k in self.metric_names + ["gen_time", "gen_len"]
+        }
+        rouge_tensor: torch.FloatTensor = torch.tensor(rouges[self.val_metric]).type_as(
+            loss
+        )
         rouges.update({k: v.item() for k, v in losses.items()})
         rouges.update({k: v.item() for k, v in losses.items()})
         losses.update(rouges)
         losses.update(rouges)
         metrics = {f"{prefix}_avg_{k}": x for k, x in losses.items()}
         metrics = {f"{prefix}_avg_{k}": x for k, x in losses.items()}
         metrics["step_count"] = self.step_count
         metrics["step_count"] = self.step_count
         self.save_metrics(metrics, prefix)  # writes to self.metrics_save_path
         self.save_metrics(metrics, prefix)  # writes to self.metrics_save_path
         preds = flatten_list([x["preds"] for x in outputs])
         preds = flatten_list([x["preds"] for x in outputs])
-        return {"log": metrics, "preds": preds, f"{prefix}_loss": loss, f"{prefix}_{self.val_metric}": rouge_tensor}
+        return {
+            "log": metrics,
+            "preds": preds,
+            f"{prefix}_loss": loss,
+            f"{prefix}_{self.val_metric}": rouge_tensor,
+        }
 
 
     def save_metrics(self, latest_metrics, type_path) -> None:
     def save_metrics(self, latest_metrics, type_path) -> None:
         self.metrics[type_path].append(latest_metrics)
         self.metrics[type_path].append(latest_metrics)
@@ -200,7 +246,9 @@ class SummarizationModule(BaseTransformer):
         base_metrics = {name: loss for name, loss in zip(self.loss_names, loss_tensors)}
         base_metrics = {name: loss for name, loss in zip(self.loss_names, loss_tensors)}
         rouge: Dict = self.calc_generative_metrics(preds, target)
         rouge: Dict = self.calc_generative_metrics(preds, target)
         summ_len = np.mean(lmap(len, generated_ids))
         summ_len = np.mean(lmap(len, generated_ids))
-        base_metrics.update(gen_time=gen_time, gen_len=summ_len, preds=preds, target=target, **rouge)
+        base_metrics.update(
+            gen_time=gen_time, gen_len=summ_len, preds=preds, target=target, **rouge
+        )
         return base_metrics
         return base_metrics
 
 
     def test_step(self, batch, batch_idx):
     def test_step(self, batch, batch_idx):
@@ -213,10 +261,10 @@ class SummarizationModule(BaseTransformer):
         max_target_length = self.target_lens[type_path]
         max_target_length = self.target_lens[type_path]
         data_config = DataConfig(
         data_config = DataConfig(
             endpoint=args.endpoint,
             endpoint=args.endpoint,
-            access_key=os.environ['access_key'],
-            secret_key=os.environ['secret_key'],
+            access_key=os.environ["access_key"],
+            secret_key=os.environ["secret_key"],
             region=args.region,
             region=args.region,
-            dataset_name='commit-autosuggestions',
+            dataset_name="commit-autosuggestions",
             additional={
             additional={
                 "mode": ("training" if type_path == "train" else "evaluation"),
                 "mode": ("training" if type_path == "train" else "evaluation"),
                 "max_source_length": self.hparams.max_source_length,
                 "max_source_length": self.hparams.max_source_length,
@@ -224,15 +272,17 @@ class SummarizationModule(BaseTransformer):
                 "url": args.url,
                 "url": args.url,
             },
             },
             attributes=[
             attributes=[
-                ('input_ids', 'int32', (self.hparams.max_source_length,)),
-                ('attention_masks', 'int32', (self.hparams.max_source_length,)),
-                ('patch_ids', 'int32', (self.hparams.max_source_length,)),
-                ('targets', 'int32', (max_target_length,))
-            ]
+                ("input_ids", "int32", (self.hparams.max_source_length,)),
+                ("attention_masks", "int32", (self.hparams.max_source_length,)),
+                ("patch_ids", "int32", (self.hparams.max_source_length,)),
+                ("targets", "int32", (max_target_length,)),
+            ],
         )
         )
         return Dataset(config=data_config, clear=True)
         return Dataset(config=data_config, clear=True)
 
 
-    def get_dataloader(self, type_path: str, batch_size: int, shuffle: bool = False) -> DataLoader:
+    def get_dataloader(
+        self, type_path: str, batch_size: int, shuffle: bool = False
+    ) -> DataLoader:
         dataset = self.get_dataset(type_path)
         dataset = self.get_dataset(type_path)
         sampler = None
         sampler = None
 
 
@@ -246,7 +296,9 @@ class SummarizationModule(BaseTransformer):
         return dataloader
         return dataloader
 
 
     def train_dataloader(self) -> DataLoader:
     def train_dataloader(self) -> DataLoader:
-        dataloader = self.get_dataloader("train", batch_size=self.hparams.train_batch_size, shuffle=True)
+        dataloader = self.get_dataloader(
+            "train", batch_size=self.hparams.train_batch_size, shuffle=True
+        )
         return dataloader
         return dataloader
 
 
     def val_dataloader(self) -> DataLoader:
     def val_dataloader(self) -> DataLoader:
@@ -259,23 +311,18 @@ class SummarizationModule(BaseTransformer):
     def add_model_specific_args(parser, root_dir):
     def add_model_specific_args(parser, root_dir):
         BaseTransformer.add_model_specific_args(parser, root_dir)
         BaseTransformer.add_model_specific_args(parser, root_dir)
         add_generic_args(parser, root_dir)
         add_generic_args(parser, root_dir)
-        parser.add_argument(
-            "--url",
-            type=str,
-            required=True,
-            help="github url"
-        )
+        parser.add_argument("--url", type=str, required=True, help="github url")
         parser.add_argument(
         parser.add_argument(
             "--endpoint",
             "--endpoint",
             type=str,
             type=str,
             required=True,
             required=True,
-            help='matorage endpoint, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html'
+            help="matorage endpoint, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html",
         )
         )
         parser.add_argument(
         parser.add_argument(
             "--region",
             "--region",
             type=str,
             type=str,
             default=None,
             default=None,
-            help='matorage s3 region, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html'
+            help="matorage s3 region, check document of matorage: https://matorage.readthedocs.io/en/stable/storage.html",
         )
         )
         parser.add_argument(
         parser.add_argument(
             "--max_source_length",
             "--max_source_length",
@@ -308,14 +355,43 @@ class SummarizationModule(BaseTransformer):
         parser.add_argument("--freeze_encoder", action="store_true")
         parser.add_argument("--freeze_encoder", action="store_true")
         parser.add_argument("--freeze_embeds", action="store_true")
         parser.add_argument("--freeze_embeds", action="store_true")
         parser.add_argument("--sortish_sampler", action="store_true", default=False)
         parser.add_argument("--sortish_sampler", action="store_true", default=False)
-        parser.add_argument("--logger_name", type=str, choices=["default", "wandb", "wandb_shared"], default="default")
-        parser.add_argument("--n_train", type=int, default=-1, required=False, help="# examples. -1 means use all.")
-        parser.add_argument("--n_val", type=int, default=500, required=False, help="# examples. -1 means use all.")
-        parser.add_argument("--n_test", type=int, default=-1, required=False, help="# examples. -1 means use all.")
         parser.add_argument(
         parser.add_argument(
-            "--task", type=str, default="summarization", required=False, help="# examples. -1 means use all."
+            "--logger_name",
+            type=str,
+            choices=["default", "wandb", "wandb_shared"],
+            default="default",
+        )
+        parser.add_argument(
+            "--n_train",
+            type=int,
+            default=-1,
+            required=False,
+            help="# examples. -1 means use all.",
+        )
+        parser.add_argument(
+            "--n_val",
+            type=int,
+            default=500,
+            required=False,
+            help="# examples. -1 means use all.",
+        )
+        parser.add_argument(
+            "--n_test",
+            type=int,
+            default=-1,
+            required=False,
+            help="# examples. -1 means use all.",
+        )
+        parser.add_argument(
+            "--task",
+            type=str,
+            default="summarization",
+            required=False,
+            help="# examples. -1 means use all.",
+        )
+        parser.add_argument(
+            "--label_smoothing", type=float, default=0.0, required=False
         )
         )
-        parser.add_argument("--label_smoothing", type=float, default=0.0, required=False)
         parser.add_argument("--src_lang", type=str, default="", required=False)
         parser.add_argument("--src_lang", type=str, default="", required=False)
         parser.add_argument("--tgt_lang", type=str, default="", required=False)
         parser.add_argument("--tgt_lang", type=str, default="", required=False)
         parser.add_argument("--eval_beams", type=int, default=None, required=False)
         parser.add_argument("--eval_beams", type=int, default=None, required=False)
@@ -348,7 +424,11 @@ class TranslationModule(SummarizationModule):
 def main(args, model=None) -> SummarizationModule:
 def main(args, model=None) -> SummarizationModule:
     Path(args.output_dir).mkdir(exist_ok=True)
     Path(args.output_dir).mkdir(exist_ok=True)
     if len(os.listdir(args.output_dir)) > 3 and args.do_train:
     if len(os.listdir(args.output_dir)) > 3 and args.do_train:
-        raise ValueError("Output directory ({}) already exists and is not empty.".format(args.output_dir))
+        raise ValueError(
+            "Output directory ({}) already exists and is not empty.".format(
+                args.output_dir
+            )
+        )
     if model is None:
     if model is None:
         if args.task == "summarization":
         if args.task == "summarization":
             model: SummarizationModule = SummarizationModule(args)
             model: SummarizationModule = SummarizationModule(args)
@@ -371,7 +451,9 @@ def main(args, model=None) -> SummarizationModule:
         return model
         return model
 
 
     model.hparams.test_checkpoint = ""
     model.hparams.test_checkpoint = ""
-    checkpoints = list(sorted(glob.glob(os.path.join(args.output_dir, "*.ckpt"), recursive=True)))
+    checkpoints = list(
+        sorted(glob.glob(os.path.join(args.output_dir, "*.ckpt"), recursive=True))
+    )
     if checkpoints:
     if checkpoints:
         model.hparams.test_checkpoint = checkpoints[-1]
         model.hparams.test_checkpoint = checkpoints[-1]
         trainer.resume_from_checkpoint = checkpoints[-1]
         trainer.resume_from_checkpoint = checkpoints[-1]

@@ -30,6 +30,7 @@ logging.basicConfig(
     level=logging.INFO,
     level=logging.INFO,
 )
 )
 
 
+
 class GenerationMixin:
 class GenerationMixin:
     """
     """
     A class contraining all of the functions supporting generation, to be used as a mixin in
     A class contraining all of the functions supporting generation, to be used as a mixin in
@@ -50,7 +51,9 @@ class GenerationMixin:
         """
         """
         return logits
         return logits
 
 
-    def enforce_repetition_penalty_(self, lprobs, batch_size, num_beams, prev_output_tokens, repetition_penalty):
+    def enforce_repetition_penalty_(
+        self, lprobs, batch_size, num_beams, prev_output_tokens, repetition_penalty
+    ):
         """
         """
         Enforce the repetition penalty (from the `CTRL paper <https://arxiv.org/abs/1909.05858>`__).
         Enforce the repetition penalty (from the `CTRL paper <https://arxiv.org/abs/1909.05858>`__).
         """
         """
@@ -79,11 +82,7 @@ class GenerationMixin:
         # repetition penalty (from CTRL paper https://arxiv.org/abs/1909.05858)
         # repetition penalty (from CTRL paper https://arxiv.org/abs/1909.05858)
         if repetition_penalty != 1.0:
         if repetition_penalty != 1.0:
             self.enforce_repetition_penalty_(
             self.enforce_repetition_penalty_(
-                scores,
-                batch_size,
-                num_beams,
-                input_ids,
-                repetition_penalty,
+                scores, batch_size, num_beams, input_ids, repetition_penalty,
             )
             )
 
 
         # set eos token prob to zero if min_length is not reached
         # set eos token prob to zero if min_length is not reached
@@ -102,7 +101,11 @@ class GenerationMixin:
 
 
         if bad_words_ids is not None:
         if bad_words_ids is not None:
             # Exclude EOS token (already processed)
             # Exclude EOS token (already processed)
-            bad_words_ids = list(filter(lambda bad_token_seq: bad_token_seq != [eos_token_id], bad_words_ids))
+            bad_words_ids = list(
+                filter(
+                    lambda bad_token_seq: bad_token_seq != [eos_token_id], bad_words_ids
+                )
+            )
             # calculate a list of banned tokens according to bad words
             # calculate a list of banned tokens according to bad words
             banned_tokens = calc_banned_bad_words_ids(input_ids.tolist(), bad_words_ids)
             banned_tokens = calc_banned_bad_words_ids(input_ids.tolist(), bad_words_ids)
             # Modify the scores in place by setting the banned tokens logits to `-inf`
             # Modify the scores in place by setting the banned tokens logits to `-inf`
@@ -134,7 +137,7 @@ class GenerationMixin:
         attention_mask: Optional[torch.LongTensor] = None,
         attention_mask: Optional[torch.LongTensor] = None,
         decoder_start_token_id: Optional[int] = None,
         decoder_start_token_id: Optional[int] = None,
         use_cache: Optional[bool] = None,
         use_cache: Optional[bool] = None,
-        **model_kwargs
+        **model_kwargs,
     ) -> torch.LongTensor:
     ) -> torch.LongTensor:
         r"""
         r"""
         Generates sequences for models with a language modeling head. The method currently supports greedy decoding,
         Generates sequences for models with a language modeling head. The method currently supports greedy decoding,
@@ -262,26 +265,50 @@ class GenerationMixin:
         max_length = max_length if max_length is not None else self.config.max_length
         max_length = max_length if max_length is not None else self.config.max_length
         min_length = min_length if min_length is not None else self.config.min_length
         min_length = min_length if min_length is not None else self.config.min_length
         do_sample = do_sample if do_sample is not None else self.config.do_sample
         do_sample = do_sample if do_sample is not None else self.config.do_sample
-        early_stopping = early_stopping if early_stopping is not None else self.config.early_stopping
+        early_stopping = (
+            early_stopping if early_stopping is not None else self.config.early_stopping
+        )
         use_cache = use_cache if use_cache is not None else self.config.use_cache
         use_cache = use_cache if use_cache is not None else self.config.use_cache
         num_beams = num_beams if num_beams is not None else self.config.num_beams
         num_beams = num_beams if num_beams is not None else self.config.num_beams
-        temperature = temperature if temperature is not None else self.config.temperature
+        temperature = (
+            temperature if temperature is not None else self.config.temperature
+        )
         top_k = top_k if top_k is not None else self.config.top_k
         top_k = top_k if top_k is not None else self.config.top_k
         top_p = top_p if top_p is not None else self.config.top_p
         top_p = top_p if top_p is not None else self.config.top_p
-        repetition_penalty = repetition_penalty if repetition_penalty is not None else self.config.repetition_penalty
-        bos_token_id = bos_token_id if bos_token_id is not None else self.config.bos_token_id
-        pad_token_id = pad_token_id if pad_token_id is not None else self.config.pad_token_id
-        eos_token_id = eos_token_id if eos_token_id is not None else self.config.eos_token_id
-        length_penalty = length_penalty if length_penalty is not None else self.config.length_penalty
+        repetition_penalty = (
+            repetition_penalty
+            if repetition_penalty is not None
+            else self.config.repetition_penalty
+        )
+        bos_token_id = (
+            bos_token_id if bos_token_id is not None else self.config.bos_token_id
+        )
+        pad_token_id = (
+            pad_token_id if pad_token_id is not None else self.config.pad_token_id
+        )
+        eos_token_id = (
+            eos_token_id if eos_token_id is not None else self.config.eos_token_id
+        )
+        length_penalty = (
+            length_penalty if length_penalty is not None else self.config.length_penalty
+        )
         no_repeat_ngram_size = (
         no_repeat_ngram_size = (
-            no_repeat_ngram_size if no_repeat_ngram_size is not None else self.config.no_repeat_ngram_size
+            no_repeat_ngram_size
+            if no_repeat_ngram_size is not None
+            else self.config.no_repeat_ngram_size
+        )
+        bad_words_ids = (
+            bad_words_ids if bad_words_ids is not None else self.config.bad_words_ids
         )
         )
-        bad_words_ids = bad_words_ids if bad_words_ids is not None else self.config.bad_words_ids
         num_return_sequences = (
         num_return_sequences = (
-            num_return_sequences if num_return_sequences is not None else self.config.num_return_sequences
+            num_return_sequences
+            if num_return_sequences is not None
+            else self.config.num_return_sequences
         )
         )
         decoder_start_token_id = (
         decoder_start_token_id = (
-            decoder_start_token_id if decoder_start_token_id is not None else self.config.decoder_start_token_id
+            decoder_start_token_id
+            if decoder_start_token_id is not None
+            else self.config.decoder_start_token_id
         )
         )
 
 
         if input_ids is not None:
         if input_ids is not None:
@@ -289,14 +316,22 @@ class GenerationMixin:
         else:
         else:
             batch_size = 1
             batch_size = 1
 
 
-        assert isinstance(max_length, int) and max_length > 0, "`max_length` should be a strictly positive integer."
-        assert isinstance(min_length, int) and min_length >= 0, "`min_length` should be a positive integer."
+        assert (
+            isinstance(max_length, int) and max_length > 0
+        ), "`max_length` should be a strictly positive integer."
+        assert (
+            isinstance(min_length, int) and min_length >= 0
+        ), "`min_length` should be a positive integer."
         assert isinstance(do_sample, bool), "`do_sample` should be a boolean."
         assert isinstance(do_sample, bool), "`do_sample` should be a boolean."
         assert isinstance(early_stopping, bool), "`early_stopping` should be a boolean."
         assert isinstance(early_stopping, bool), "`early_stopping` should be a boolean."
         assert isinstance(use_cache, bool), "`use_cache` should be a boolean."
         assert isinstance(use_cache, bool), "`use_cache` should be a boolean."
-        assert isinstance(num_beams, int) and num_beams > 0, "`num_beams` should be a strictly positive integer."
+        assert (
+            isinstance(num_beams, int) and num_beams > 0
+        ), "`num_beams` should be a strictly positive integer."
         assert temperature > 0, "`temperature` should be strictly positive."
         assert temperature > 0, "`temperature` should be strictly positive."
-        assert isinstance(top_k, int) and top_k >= 0, "`top_k` should be a positive integer."
+        assert (
+            isinstance(top_k, int) and top_k >= 0
+        ), "`top_k` should be a positive integer."
         assert 0 <= top_p <= 1, "`top_p` should be between 0 and 1."
         assert 0 <= top_p <= 1, "`top_p` should be between 0 and 1."
         assert repetition_penalty >= 1.0, "`repetition_penalty` should be >= 1."
         assert repetition_penalty >= 1.0, "`repetition_penalty` should be >= 1."
         assert input_ids is not None or (
         assert input_ids is not None or (
@@ -316,7 +351,9 @@ class GenerationMixin:
             isinstance(num_return_sequences, int) and num_return_sequences > 0
             isinstance(num_return_sequences, int) and num_return_sequences > 0
         ), "`num_return_sequences` should be a strictly positive integer."
         ), "`num_return_sequences` should be a strictly positive integer."
         assert (
         assert (
-            bad_words_ids is None or isinstance(bad_words_ids, list) and isinstance(bad_words_ids[0], list)
+            bad_words_ids is None
+            or isinstance(bad_words_ids, list)
+            and isinstance(bad_words_ids[0], list)
         ), "`bad_words_ids` is either `None` or a list of lists of tokens that should not be generated"
         ), "`bad_words_ids` is either `None` or a list of lists of tokens that should not be generated"
 
 
         if input_ids is None:
         if input_ids is None:
@@ -331,7 +368,9 @@ class GenerationMixin:
                 device=next(self.parameters()).device,
                 device=next(self.parameters()).device,
             )
             )
         else:
         else:
-            assert input_ids.dim() == 2, "Input prompt should be of shape (batch_size, sequence length)."
+            assert (
+                input_ids.dim() == 2
+            ), "Input prompt should be of shape (batch_size, sequence length)."
 
 
         # not allow to duplicate outputs when greedy decoding
         # not allow to duplicate outputs when greedy decoding
         if do_sample is False:
         if do_sample is False:
@@ -349,7 +388,11 @@ class GenerationMixin:
 
 
         # create attention mask if necessary
         # create attention mask if necessary
         # TODO (PVP): this should later be handled by the forward fn() in each model in the future see PR 3140
         # TODO (PVP): this should later be handled by the forward fn() in each model in the future see PR 3140
-        if (attention_mask is None) and (pad_token_id is not None) and (pad_token_id in input_ids):
+        if (
+            (attention_mask is None)
+            and (pad_token_id is not None)
+            and (pad_token_id in input_ids)
+        ):
             attention_mask = input_ids.ne(pad_token_id).long()
             attention_mask = input_ids.ne(pad_token_id).long()
         elif attention_mask is None:
         elif attention_mask is None:
             attention_mask = input_ids.new_ones(input_ids.shape)
             attention_mask = input_ids.new_ones(input_ids.shape)
@@ -358,7 +401,9 @@ class GenerationMixin:
         # attention_mask is created
         # attention_mask is created
         if pad_token_id is None and eos_token_id is not None:
         if pad_token_id is None and eos_token_id is not None:
             logger.warning(
             logger.warning(
-                "Setting `pad_token_id` to {} (first `eos_token_id`) to generate sequence".format(eos_token_id)
+                "Setting `pad_token_id` to {} (first `eos_token_id`) to generate sequence".format(
+                    eos_token_id
+                )
             )
             )
             pad_token_id = eos_token_id
             pad_token_id = eos_token_id
 
 
@@ -385,25 +430,37 @@ class GenerationMixin:
                 # see if BOS token can be used for decoder_start_token_id
                 # see if BOS token can be used for decoder_start_token_id
                 if bos_token_id is not None:
                 if bos_token_id is not None:
                     decoder_start_token_id = bos_token_id
                     decoder_start_token_id = bos_token_id
-                elif hasattr(self.config, "decoder") and hasattr(self.config.decoder, "bos_token_id"):
+                elif hasattr(self.config, "decoder") and hasattr(
+                    self.config.decoder, "bos_token_id"
+                ):
                     decoder_start_token_id = self.config.decoder.bos_token_id
                     decoder_start_token_id = self.config.decoder.bos_token_id
                 else:
                 else:
                     raise ValueError(
                     raise ValueError(
                         "decoder_start_token_id or bos_token_id has to be defined for encoder-decoder generation"
                         "decoder_start_token_id or bos_token_id has to be defined for encoder-decoder generation"
                     )
                     )
 
 
-            assert hasattr(self, "get_encoder"), "{} should have a 'get_encoder' function defined".format(self)
-            assert callable(self.get_encoder), "{} should be a method".format(self.get_encoder)
+            assert hasattr(
+                self, "get_encoder"
+            ), "{} should have a 'get_encoder' function defined".format(self)
+            assert callable(self.get_encoder), "{} should be a method".format(
+                self.get_encoder
+            )
 
 
             # get encoder and store encoder outputs
             # get encoder and store encoder outputs
             encoder = self.get_encoder()
             encoder = self.get_encoder()
-            encoder_outputs: ModelOutput = encoder(input_ids, patch_ids, attention_mask=attention_mask, return_dict=True)
+            encoder_outputs: ModelOutput = encoder(
+                input_ids, patch_ids, attention_mask=attention_mask, return_dict=True
+            )
 
 
         # Expand input ids if num_beams > 1 or num_return_sequences > 1
         # Expand input ids if num_beams > 1 or num_return_sequences > 1
         if num_return_sequences > 1 or num_beams > 1:
         if num_return_sequences > 1 or num_beams > 1:
             input_ids_len = input_ids.shape[-1]
             input_ids_len = input_ids.shape[-1]
-            input_ids = input_ids.unsqueeze(1).expand(batch_size, effective_batch_mult * num_beams, input_ids_len)
-            patch_ids = patch_ids.unsqueeze(1).expand(batch_size, effective_batch_mult * num_beams, input_ids_len)
+            input_ids = input_ids.unsqueeze(1).expand(
+                batch_size, effective_batch_mult * num_beams, input_ids_len
+            )
+            patch_ids = patch_ids.unsqueeze(1).expand(
+                batch_size, effective_batch_mult * num_beams, input_ids_len
+            )
             attention_mask = attention_mask.unsqueeze(1).expand(
             attention_mask = attention_mask.unsqueeze(1).expand(
                 batch_size, effective_batch_mult * num_beams, input_ids_len
                 batch_size, effective_batch_mult * num_beams, input_ids_len
             )
             )
@@ -442,9 +499,9 @@ class GenerationMixin:
             )
             )
 
 
             # expand encoder_outputs
             # expand encoder_outputs
-            encoder_outputs["last_hidden_state"] = encoder_outputs.last_hidden_state.index_select(
-                0, expanded_batch_idxs
-            )
+            encoder_outputs[
+                "last_hidden_state"
+            ] = encoder_outputs.last_hidden_state.index_select(0, expanded_batch_idxs)
 
 
             # save encoder_outputs in `model_kwargs`
             # save encoder_outputs in `model_kwargs`
             model_kwargs["encoder_outputs"] = encoder_outputs
             model_kwargs["encoder_outputs"] = encoder_outputs
@@ -534,7 +591,11 @@ class GenerationMixin:
         past = None
         past = None
         while cur_len < max_length:
         while cur_len < max_length:
             model_inputs = self.prepare_inputs_for_generation(
             model_inputs = self.prepare_inputs_for_generation(
-                input_ids, past=past, attention_mask=attention_mask, use_cache=use_cache, **model_kwargs
+                input_ids,
+                past=past,
+                attention_mask=attention_mask,
+                use_cache=use_cache,
+                **model_kwargs,
             )
             )
 
 
             outputs = self(**model_inputs, return_dict=True)
             outputs = self(**model_inputs, return_dict=True)
@@ -565,7 +626,9 @@ class GenerationMixin:
                 if temperature != 1.0:
                 if temperature != 1.0:
                     scores = scores / temperature
                     scores = scores / temperature
                 # Top-p/top-k filtering
                 # Top-p/top-k filtering
-                next_token_logscores = top_k_top_p_filtering(scores, top_k=top_k, top_p=top_p)
+                next_token_logscores = top_k_top_p_filtering(
+                    scores, top_k=top_k, top_p=top_p
+                )
                 # Sample
                 # Sample
                 probs = F.softmax(next_token_logscores, dim=-1)
                 probs = F.softmax(next_token_logscores, dim=-1)
                 next_token = torch.multinomial(probs, num_samples=1).squeeze(1)
                 next_token = torch.multinomial(probs, num_samples=1).squeeze(1)
@@ -576,7 +639,9 @@ class GenerationMixin:
             # update generations and finished sentences
             # update generations and finished sentences
             if eos_token_id is not None:
             if eos_token_id is not None:
                 # pad finished sentences if eos_token_id exist
                 # pad finished sentences if eos_token_id exist
-                tokens_to_add = next_token * unfinished_sents + (pad_token_id) * (1 - unfinished_sents)
+                tokens_to_add = next_token * unfinished_sents + (pad_token_id) * (
+                    1 - unfinished_sents
+                )
             else:
             else:
                 tokens_to_add = next_token
                 tokens_to_add = next_token
 
 
@@ -587,8 +652,12 @@ class GenerationMixin:
             if eos_token_id is not None:
             if eos_token_id is not None:
                 eos_in_sents = tokens_to_add == eos_token_id
                 eos_in_sents = tokens_to_add == eos_token_id
                 # if sentence is unfinished and the token to add is eos, sent_lengths is filled with current length
                 # if sentence is unfinished and the token to add is eos, sent_lengths is filled with current length
-                is_sents_unfinished_and_token_to_add_is_eos = unfinished_sents.mul(eos_in_sents.long()).bool()
-                sent_lengths.masked_fill_(is_sents_unfinished_and_token_to_add_is_eos, cur_len)
+                is_sents_unfinished_and_token_to_add_is_eos = unfinished_sents.mul(
+                    eos_in_sents.long()
+                ).bool()
+                sent_lengths.masked_fill_(
+                    is_sents_unfinished_and_token_to_add_is_eos, cur_len
+                )
                 # unfinished_sents is set to zero if eos in sentence
                 # unfinished_sents is set to zero if eos in sentence
                 unfinished_sents.mul_((~eos_in_sents).long())
                 unfinished_sents.mul_((~eos_in_sents).long())
 
 
@@ -599,7 +668,11 @@ class GenerationMixin:
             # extend attention_mask for new generated input if only decoder
             # extend attention_mask for new generated input if only decoder
             if self.config.is_encoder_decoder is False:
             if self.config.is_encoder_decoder is False:
                 attention_mask = torch.cat(
                 attention_mask = torch.cat(
-                    [attention_mask, attention_mask.new_ones((attention_mask.shape[0], 1))], dim=-1
+                    [
+                        attention_mask,
+                        attention_mask.new_ones((attention_mask.shape[0], 1)),
+                    ],
+                    dim=-1,
                 )
                 )
 
 
         return input_ids
         return input_ids
@@ -633,12 +706,16 @@ class GenerationMixin:
 
 
         # generated hypotheses
         # generated hypotheses
         generated_hyps = [
         generated_hyps = [
-            BeamHypotheses(num_beams, max_length, length_penalty, early_stopping=early_stopping)
+            BeamHypotheses(
+                num_beams, max_length, length_penalty, early_stopping=early_stopping
+            )
             for _ in range(batch_size)
             for _ in range(batch_size)
         ]
         ]
 
 
         # scores for each sentence in the beam
         # scores for each sentence in the beam
-        beam_scores = torch.zeros((batch_size, num_beams), dtype=torch.float, device=input_ids.device)
+        beam_scores = torch.zeros(
+            (batch_size, num_beams), dtype=torch.float, device=input_ids.device
+        )
 
 
         # for greedy decoding it is made sure that only tokens of the first beam are considered to avoid sampling the exact same tokens three times
         # for greedy decoding it is made sure that only tokens of the first beam are considered to avoid sampling the exact same tokens three times
         if do_sample is False:
         if do_sample is False:
@@ -653,10 +730,18 @@ class GenerationMixin:
 
 
         while cur_len < max_length:
         while cur_len < max_length:
             model_inputs = self.prepare_inputs_for_generation(
             model_inputs = self.prepare_inputs_for_generation(
-                input_ids, past=past, attention_mask=attention_mask, use_cache=use_cache, **model_kwargs
+                input_ids,
+                past=past,
+                attention_mask=attention_mask,
+                use_cache=use_cache,
+                **model_kwargs,
             )
             )
-            outputs = self(**model_inputs, return_dict=True)  # (batch_size * num_beams, cur_len, vocab_size)
-            next_token_logits = outputs.logits[:, -1, :]  # (batch_size * num_beams, vocab_size)
+            outputs = self(
+                **model_inputs, return_dict=True
+            )  # (batch_size * num_beams, cur_len, vocab_size)
+            next_token_logits = outputs.logits[
+                :, -1, :
+            ]  # (batch_size * num_beams, vocab_size)
 
 
             # if model has past, then set the past variable to speed up decoding
             # if model has past, then set the past variable to speed up decoding
             if "past_key_values" in outputs:
             if "past_key_values" in outputs:
@@ -670,7 +755,9 @@ class GenerationMixin:
                     next_token_logits, cur_len=cur_len, max_length=max_length
                     next_token_logits, cur_len=cur_len, max_length=max_length
                 )
                 )
 
 
-            scores = F.log_softmax(next_token_logits, dim=-1)  # (batch_size * num_beams, vocab_size)
+            scores = F.log_softmax(
+                next_token_logits, dim=-1
+            )  # (batch_size * num_beams, vocab_size)
 
 
             scores = self.postprocess_next_token_scores(
             scores = self.postprocess_next_token_scores(
                 scores=scores,
                 scores=scores,
@@ -686,12 +773,17 @@ class GenerationMixin:
                 num_beams=num_beams,
                 num_beams=num_beams,
             )
             )
 
 
-            assert scores.shape == (batch_size * num_beams, vocab_size), "Shapes of scores: {} != {}".format(
+            assert scores.shape == (
+                batch_size * num_beams,
+                vocab_size,
+            ), "Shapes of scores: {} != {}".format(
                 scores.shape, (batch_size * num_beams, vocab_size)
                 scores.shape, (batch_size * num_beams, vocab_size)
             )
             )
 
 
             if do_sample:
             if do_sample:
-                _scores = scores + beam_scores[:, None].expand_as(scores)  # (batch_size * num_beams, vocab_size)
+                _scores = scores + beam_scores[:, None].expand_as(
+                    scores
+                )  # (batch_size * num_beams, vocab_size)
                 # Temperature
                 # Temperature
                 if temperature != 1.0:
                 if temperature != 1.0:
                     _scores = _scores / temperature
                     _scores = _scores / temperature
@@ -706,24 +798,38 @@ class GenerationMixin:
 
 
                 # Sample 2 next tokens for each beam (so we have some spare tokens and match output of greedy beam search)
                 # Sample 2 next tokens for each beam (so we have some spare tokens and match output of greedy beam search)
                 probs = F.softmax(_scores, dim=-1)
                 probs = F.softmax(_scores, dim=-1)
-                next_tokens = torch.multinomial(probs, num_samples=2 * num_beams)  # (batch_size, num_beams * 2)
+                next_tokens = torch.multinomial(
+                    probs, num_samples=2 * num_beams
+                )  # (batch_size, num_beams * 2)
                 # Compute next scores
                 # Compute next scores
-                next_scores = torch.gather(_scores, -1, next_tokens)  # (batch_size, num_beams * 2)
+                next_scores = torch.gather(
+                    _scores, -1, next_tokens
+                )  # (batch_size, num_beams * 2)
                 # sort the sampled vector to make sure that the first num_beams samples are the best
                 # sort the sampled vector to make sure that the first num_beams samples are the best
-                next_scores, next_scores_indices = torch.sort(next_scores, descending=True, dim=1)
-                next_tokens = torch.gather(next_tokens, -1, next_scores_indices)  # (batch_size, num_beams * 2)
+                next_scores, next_scores_indices = torch.sort(
+                    next_scores, descending=True, dim=1
+                )
+                next_tokens = torch.gather(
+                    next_tokens, -1, next_scores_indices
+                )  # (batch_size, num_beams * 2)
 
 
             else:
             else:
-                next_scores = scores + beam_scores[:, None].expand_as(scores)  # (batch_size * num_beams, vocab_size)
+                next_scores = scores + beam_scores[:, None].expand_as(
+                    scores
+                )  # (batch_size * num_beams, vocab_size)
 
 
                 # re-organize to group the beam together (we are keeping top hypothesis accross beams)
                 # re-organize to group the beam together (we are keeping top hypothesis accross beams)
                 next_scores = next_scores.view(
                 next_scores = next_scores.view(
                     batch_size, num_beams * vocab_size
                     batch_size, num_beams * vocab_size
                 )  # (batch_size, num_beams * vocab_size)
                 )  # (batch_size, num_beams * vocab_size)
 
 
-                next_scores, next_tokens = torch.topk(next_scores, 2 * num_beams, dim=1, largest=True, sorted=True)
+                next_scores, next_tokens = torch.topk(
+                    next_scores, 2 * num_beams, dim=1, largest=True, sorted=True
+                )
 
 
-            assert next_scores.size() == next_tokens.size() == (batch_size, 2 * num_beams)
+            assert (
+                next_scores.size() == next_tokens.size() == (batch_size, 2 * num_beams)
+            )
 
 
             # next batch beam content
             # next batch beam content
             next_batch_beam = []
             next_batch_beam = []
@@ -735,11 +841,15 @@ class GenerationMixin:
                 if done[batch_idx]:
                 if done[batch_idx]:
                     assert (
                     assert (
                         len(generated_hyps[batch_idx]) >= num_beams
                         len(generated_hyps[batch_idx]) >= num_beams
-                    ), "Batch can only be done if at least {} beams have been generated".format(num_beams)
+                    ), "Batch can only be done if at least {} beams have been generated".format(
+                        num_beams
+                    )
                     assert (
                     assert (
                         eos_token_id is not None and pad_token_id is not None
                         eos_token_id is not None and pad_token_id is not None
                     ), "generated beams >= num_beams -> eos_token_id and pad_token have to be defined"
                     ), "generated beams >= num_beams -> eos_token_id and pad_token have to be defined"
-                    next_batch_beam.extend([(0, pad_token_id, 0)] * num_beams)  # pad the batch
+                    next_batch_beam.extend(
+                        [(0, pad_token_id, 0)] * num_beams
+                    )  # pad the batch
                     continue
                     continue
 
 
                 # next sentence beam content, this will get added to next_batch_beam
                 # next sentence beam content, this will get added to next_batch_beam
@@ -757,7 +867,9 @@ class GenerationMixin:
                     # add to generated hypotheses if end of sentence
                     # add to generated hypotheses if end of sentence
                     if (eos_token_id is not None) and (token_id.item() == eos_token_id):
                     if (eos_token_id is not None) and (token_id.item() == eos_token_id):
                         # if beam_token does not belong to top num_beams tokens, it should not be added
                         # if beam_token does not belong to top num_beams tokens, it should not be added
-                        is_beam_token_worse_than_top_num_beams = beam_token_rank >= num_beams
+                        is_beam_token_worse_than_top_num_beams = (
+                            beam_token_rank >= num_beams
+                        )
                         if is_beam_token_worse_than_top_num_beams:
                         if is_beam_token_worse_than_top_num_beams:
                             continue
                             continue
                         generated_hyps[batch_idx].add(
                         generated_hyps[batch_idx].add(
@@ -766,7 +878,9 @@ class GenerationMixin:
                         )
                         )
                     else:
                     else:
                         # add next predicted token since it is not eos_token
                         # add next predicted token since it is not eos_token
-                        next_sent_beam.append((beam_token_score, token_id, effective_beam_id))
+                        next_sent_beam.append(
+                            (beam_token_score, token_id, effective_beam_id)
+                        )
 
 
                     # once the beam for next step is full, don't add more tokens to it.
                     # once the beam for next step is full, don't add more tokens to it.
                     if len(next_sent_beam) == num_beams:
                     if len(next_sent_beam) == num_beams:
@@ -780,7 +894,9 @@ class GenerationMixin:
                 # update next beam content
                 # update next beam content
                 assert len(next_sent_beam) == num_beams, "Beam should always be full"
                 assert len(next_sent_beam) == num_beams, "Beam should always be full"
                 next_batch_beam.extend(next_sent_beam)
                 next_batch_beam.extend(next_sent_beam)
-                assert len(next_batch_beam) == num_beams * (batch_idx + 1), "We should have added num_beams each step"
+                assert len(next_batch_beam) == num_beams * (
+                    batch_idx + 1
+                ), "We should have added num_beams each step"
 
 
             # stop when we are done with each sentence
             # stop when we are done with each sentence
             if all(done):
             if all(done):
@@ -804,7 +920,11 @@ class GenerationMixin:
             # extend attention_mask for new generated input if only decoder
             # extend attention_mask for new generated input if only decoder
             if self.config.is_encoder_decoder is False:
             if self.config.is_encoder_decoder is False:
                 attention_mask = torch.cat(
                 attention_mask = torch.cat(
-                    [attention_mask, attention_mask.new_ones((attention_mask.shape[0], 1))], dim=-1
+                    [
+                        attention_mask,
+                        attention_mask.new_ones((attention_mask.shape[0], 1)),
+                    ],
+                    dim=-1,
                 )
                 )
 
 
         # finalize all open beam hypotheses and add to generated hypotheses
         # finalize all open beam hypotheses and add to generated hypotheses
@@ -814,10 +934,12 @@ class GenerationMixin:
 
 
             # test that beam scores match previously calculated scores if not eos and batch_idx not done
             # test that beam scores match previously calculated scores if not eos and batch_idx not done
             if eos_token_id is not None and all(
             if eos_token_id is not None and all(
-                (token_id % vocab_size).item() != eos_token_id for token_id in next_tokens[batch_idx]
+                (token_id % vocab_size).item() != eos_token_id
+                for token_id in next_tokens[batch_idx]
             ):
             ):
                 assert torch.all(
                 assert torch.all(
-                    next_scores[batch_idx, :num_beams] == beam_scores.view(batch_size, num_beams)[batch_idx]
+                    next_scores[batch_idx, :num_beams]
+                    == beam_scores.view(batch_size, num_beams)[batch_idx]
                 ), "If batch_idx is not done, final next scores: {} have to equal to accumulated beam_scores: {}".format(
                 ), "If batch_idx is not done, final next scores: {} have to equal to accumulated beam_scores: {}".format(
                     next_scores[:, :num_beams][batch_idx],
                     next_scores[:, :num_beams][batch_idx],
                     beam_scores.view(batch_size, num_beams)[batch_idx],
                     beam_scores.view(batch_size, num_beams)[batch_idx],
@@ -831,7 +953,9 @@ class GenerationMixin:
                 generated_hyps[batch_idx].add(final_tokens, final_score)
                 generated_hyps[batch_idx].add(final_tokens, final_score)
 
 
         # depending on whether greedy generation is wanted or not define different output_batch_size and output_num_return_sequences_per_batch
         # depending on whether greedy generation is wanted or not define different output_batch_size and output_num_return_sequences_per_batch
-        output_batch_size = batch_size if do_sample else batch_size * num_return_sequences
+        output_batch_size = (
+            batch_size if do_sample else batch_size * num_return_sequences
+        )
         output_num_return_sequences_per_batch = 1 if do_sample else num_return_sequences
         output_num_return_sequences_per_batch = 1 if do_sample else num_return_sequences
 
 
         # select the best hypotheses
         # select the best hypotheses
@@ -861,7 +985,9 @@ class GenerationMixin:
         else:
         else:
             # none of the hypotheses have an eos_token
             # none of the hypotheses have an eos_token
             assert (len(hypo) == max_length for hypo in best)
             assert (len(hypo) == max_length for hypo in best)
-            decoded = torch.stack(best).type(torch.long).to(next(self.parameters()).device)
+            decoded = (
+                torch.stack(best).type(torch.long).to(next(self.parameters()).device)
+            )
 
 
         return decoded
         return decoded
 
 
@@ -870,7 +996,9 @@ class GenerationMixin:
         return tuple(layer_past.index_select(1, beam_idx) for layer_past in past)
         return tuple(layer_past.index_select(1, beam_idx) for layer_past in past)
 
 
 
 
-def calc_banned_ngram_tokens(prev_input_ids: Tensor, num_hypos: int, no_repeat_ngram_size: int, cur_len: int) -> None:
+def calc_banned_ngram_tokens(
+    prev_input_ids: Tensor, num_hypos: int, no_repeat_ngram_size: int, cur_len: int
+) -> None:
     """Copied from fairseq for no_repeat_ngram in beam_search"""
     """Copied from fairseq for no_repeat_ngram in beam_search"""
     if cur_len + 1 < no_repeat_ngram_size:
     if cur_len + 1 < no_repeat_ngram_size:
         # return no banned tokens if we haven't generated no_repeat_ngram_size tokens yet
         # return no banned tokens if we haven't generated no_repeat_ngram_size tokens yet
@@ -881,7 +1009,9 @@ def calc_banned_ngram_tokens(prev_input_ids: Tensor, num_hypos: int, no_repeat_n
         generated_ngram = generated_ngrams[idx]
         generated_ngram = generated_ngrams[idx]
         for ngram in zip(*[gen_tokens[i:] for i in range(no_repeat_ngram_size)]):
         for ngram in zip(*[gen_tokens[i:] for i in range(no_repeat_ngram_size)]):
             prev_ngram_tuple = tuple(ngram[:-1])
             prev_ngram_tuple = tuple(ngram[:-1])
-            generated_ngram[prev_ngram_tuple] = generated_ngram.get(prev_ngram_tuple, []) + [ngram[-1]]
+            generated_ngram[prev_ngram_tuple] = generated_ngram.get(
+                prev_ngram_tuple, []
+            ) + [ngram[-1]]
 
 
     def _get_generated_ngrams(hypo_idx):
     def _get_generated_ngrams(hypo_idx):
         # Before decoding the next token, prevent decoding of ngrams that have already appeared
         # Before decoding the next token, prevent decoding of ngrams that have already appeared
@@ -893,7 +1023,9 @@ def calc_banned_ngram_tokens(prev_input_ids: Tensor, num_hypos: int, no_repeat_n
     return banned_tokens
     return banned_tokens
 
 
 
 
-def calc_banned_bad_words_ids(prev_input_ids: Iterable[int], bad_words_ids: Iterable[int]) -> Iterable[int]:
+def calc_banned_bad_words_ids(
+    prev_input_ids: Iterable[int], bad_words_ids: Iterable[int]
+) -> Iterable[int]:
     banned_tokens = []
     banned_tokens = []
 
 
     def _tokens_match(prev_tokens, tokens):
     def _tokens_match(prev_tokens, tokens):
@@ -914,7 +1046,9 @@ def calc_banned_bad_words_ids(prev_input_ids: Iterable[int], bad_words_ids: Iter
         banned_tokens_slice = []
         banned_tokens_slice = []
 
 
         for banned_token_seq in bad_words_ids:
         for banned_token_seq in bad_words_ids:
-            assert len(banned_token_seq) > 0, "Banned words token sequences {} cannot have an empty list".format(
+            assert (
+                len(banned_token_seq) > 0
+            ), "Banned words token sequences {} cannot have an empty list".format(
                 bad_words_ids
                 bad_words_ids
             )
             )
 
 
@@ -929,7 +1063,9 @@ def calc_banned_bad_words_ids(prev_input_ids: Iterable[int], bad_words_ids: Iter
     return banned_tokens
     return banned_tokens
 
 
 
 
-def set_scores_to_inf_for_banned_tokens(scores: torch.Tensor, banned_tokens: List[List[int]]) -> None:
+def set_scores_to_inf_for_banned_tokens(
+    scores: torch.Tensor, banned_tokens: List[List[int]]
+) -> None:
     """Modifies the scores in place by setting the banned token positions to `-inf`. Banned token is expected to be
     """Modifies the scores in place by setting the banned token positions to `-inf`. Banned token is expected to be
     a list of list of banned tokens to ban in the format [[batch index, vocabulary position],...]
     a list of list of banned tokens to ban in the format [[batch index, vocabulary position],...]
         Args:
         Args:
@@ -949,7 +1085,12 @@ def set_scores_to_inf_for_banned_tokens(scores: torch.Tensor, banned_tokens: Lis
     # [ 0  0  0 ]
     # [ 0  0  0 ]
     # [ 1  0  0 ]
     # [ 1  0  0 ]
 
 
-    banned_mask = torch.sparse.LongTensor(banned_mask.t(), indices, scores.size()).to(scores.device).to_dense().bool()
+    banned_mask = (
+        torch.sparse.LongTensor(banned_mask.t(), indices, scores.size())
+        .to(scores.device)
+        .to_dense()
+        .bool()
+    )
     scores.masked_fill_(banned_mask, -float("inf"))
     scores.masked_fill_(banned_mask, -float("inf"))
 
 
 
 
@@ -989,7 +1130,9 @@ def top_k_top_p_filtering(
         sorted_indices_to_remove[..., 0] = 0
         sorted_indices_to_remove[..., 0] = 0
 
 
         # scatter sorted tensors to original indexing
         # scatter sorted tensors to original indexing
-        indices_to_remove = sorted_indices_to_remove.scatter(1, sorted_indices, sorted_indices_to_remove)
+        indices_to_remove = sorted_indices_to_remove.scatter(
+            1, sorted_indices, sorted_indices_to_remove
+        )
         logits[indices_to_remove] = filter_value
         logits[indices_to_remove] = filter_value
     return logits
     return logits
 
 
@@ -1020,7 +1163,9 @@ class BeamHypotheses(object):
         if len(self) < self.num_beams or score > self.worst_score:
         if len(self) < self.num_beams or score > self.worst_score:
             self.beams.append((score, hyp))
             self.beams.append((score, hyp))
             if len(self) > self.num_beams:
             if len(self) > self.num_beams:
-                sorted_scores = sorted([(s, idx) for idx, (s, _) in enumerate(self.beams)])
+                sorted_scores = sorted(
+                    [(s, idx) for idx, (s, _) in enumerate(self.beams)]
+                )
                 del self.beams[sorted_scores[0][1]]
                 del self.beams[sorted_scores[0][1]]
                 self.worst_score = sorted_scores[1][0]
                 self.worst_score = sorted_scores[1][0]
             else:
             else:

@@ -69,7 +69,7 @@ class BaseTransformer(pl.LightningModule):
         config=None,
         config=None,
         tokenizer=None,
         tokenizer=None,
         model=None,
         model=None,
-        **config_kwargs
+        **config_kwargs,
     ):
     ):
         """Initialize a model, tokenizer and config."""
         """Initialize a model, tokenizer and config."""
         super().__init__()
         super().__init__()
@@ -83,7 +83,9 @@ class BaseTransformer(pl.LightningModule):
         cache_dir = self.hparams.cache_dir if self.hparams.cache_dir else None
         cache_dir = self.hparams.cache_dir if self.hparams.cache_dir else None
         if config is None:
         if config is None:
             self.config = AutoConfig.from_pretrained(
             self.config = AutoConfig.from_pretrained(
-                self.hparams.config_name if self.hparams.config_name else self.hparams.model_name_or_path,
+                self.hparams.config_name
+                if self.hparams.config_name
+                else self.hparams.model_name_or_path,
                 **({"num_labels": num_labels} if num_labels is not None else {}),
                 **({"num_labels": num_labels} if num_labels is not None else {}),
                 cache_dir=cache_dir,
                 cache_dir=cache_dir,
                 **config_kwargs,
                 **config_kwargs,
@@ -91,15 +93,24 @@ class BaseTransformer(pl.LightningModule):
         else:
         else:
             self.config: PretrainedConfig = config
             self.config: PretrainedConfig = config
 
 
-        extra_model_params = ("encoder_layerdrop", "decoder_layerdrop", "dropout", "attention_dropout")
+        extra_model_params = (
+            "encoder_layerdrop",
+            "decoder_layerdrop",
+            "dropout",
+            "attention_dropout",
+        )
         for p in extra_model_params:
         for p in extra_model_params:
             if getattr(self.hparams, p, None):
             if getattr(self.hparams, p, None):
-                assert hasattr(self.config, p), f"model config doesn't have a `{p}` attribute"
+                assert hasattr(
+                    self.config, p
+                ), f"model config doesn't have a `{p}` attribute"
                 setattr(self.config, p, getattr(self.hparams, p))
                 setattr(self.config, p, getattr(self.hparams, p))
 
 
         if tokenizer is None:
         if tokenizer is None:
             self.tokenizer = AutoTokenizer.from_pretrained(
             self.tokenizer = AutoTokenizer.from_pretrained(
-                self.hparams.tokenizer_name if self.hparams.tokenizer_name else self.hparams.model_name_or_path,
+                self.hparams.tokenizer_name
+                if self.hparams.tokenizer_name
+                else self.hparams.model_name_or_path,
                 cache_dir=cache_dir,
                 cache_dir=cache_dir,
             )
             )
         else:
         else:
@@ -121,7 +132,9 @@ class BaseTransformer(pl.LightningModule):
     def get_lr_scheduler(self):
     def get_lr_scheduler(self):
         get_schedule_func = arg_to_scheduler[self.hparams.lr_scheduler]
         get_schedule_func = arg_to_scheduler[self.hparams.lr_scheduler]
         scheduler = get_schedule_func(
         scheduler = get_schedule_func(
-            self.opt, num_warmup_steps=self.hparams.warmup_steps, num_training_steps=self.total_steps
+            self.opt,
+            num_warmup_steps=self.hparams.warmup_steps,
+            num_training_steps=self.total_steps,
         )
         )
         scheduler = {"scheduler": scheduler, "interval": "step", "frequency": 1}
         scheduler = {"scheduler": scheduler, "interval": "step", "frequency": 1}
         return scheduler
         return scheduler
@@ -132,22 +145,35 @@ class BaseTransformer(pl.LightningModule):
         no_decay = ["bias", "LayerNorm.weight"]
         no_decay = ["bias", "LayerNorm.weight"]
         optimizer_grouped_parameters = [
         optimizer_grouped_parameters = [
             {
             {
-                "params": [p for n, p in model.named_parameters() if not any(nd in n for nd in no_decay)],
+                "params": [
+                    p
+                    for n, p in model.named_parameters()
+                    if not any(nd in n for nd in no_decay)
+                ],
                 "weight_decay": self.hparams.weight_decay,
                 "weight_decay": self.hparams.weight_decay,
             },
             },
             {
             {
-                "params": [p for n, p in model.named_parameters() if any(nd in n for nd in no_decay)],
+                "params": [
+                    p
+                    for n, p in model.named_parameters()
+                    if any(nd in n for nd in no_decay)
+                ],
                 "weight_decay": 0.0,
                 "weight_decay": 0.0,
             },
             },
         ]
         ]
         if self.hparams.adafactor:
         if self.hparams.adafactor:
             optimizer = Adafactor(
             optimizer = Adafactor(
-                optimizer_grouped_parameters, lr=self.hparams.learning_rate, scale_parameter=False, relative_step=False
+                optimizer_grouped_parameters,
+                lr=self.hparams.learning_rate,
+                scale_parameter=False,
+                relative_step=False,
             )
             )
 
 
         else:
         else:
             optimizer = AdamW(
             optimizer = AdamW(
-                optimizer_grouped_parameters, lr=self.hparams.learning_rate, eps=self.hparams.adam_epsilon
+                optimizer_grouped_parameters,
+                lr=self.hparams.learning_rate,
+                eps=self.hparams.adam_epsilon,
             )
             )
         self.opt = optimizer
         self.opt = optimizer
 
 
@@ -165,13 +191,19 @@ class BaseTransformer(pl.LightningModule):
     def total_steps(self) -> int:
     def total_steps(self) -> int:
         """The number of total training steps that will be run. Used for lr scheduler purposes."""
         """The number of total training steps that will be run. Used for lr scheduler purposes."""
         num_devices = max(1, self.hparams.gpus)  # TODO: consider num_tpu_cores
         num_devices = max(1, self.hparams.gpus)  # TODO: consider num_tpu_cores
-        effective_batch_size = self.hparams.train_batch_size * self.hparams.accumulate_grad_batches * num_devices
+        effective_batch_size = (
+            self.hparams.train_batch_size
+            * self.hparams.accumulate_grad_batches
+            * num_devices
+        )
         dataset_size = len(self.train_loader.dataset)
         dataset_size = len(self.train_loader.dataset)
         return (dataset_size / effective_batch_size) * self.hparams.max_epochs
         return (dataset_size / effective_batch_size) * self.hparams.max_epochs
 
 
     def setup(self, mode):
     def setup(self, mode):
         if mode == "fit":
         if mode == "fit":
-            self.train_loader = self.get_dataloader("train", self.hparams.train_batch_size, shuffle=True)
+            self.train_loader = self.get_dataloader(
+                "train", self.hparams.train_batch_size, shuffle=True
+            )
 
 
     def get_dataloader(self, type_path, batch_size, shuffle=False):
     def get_dataloader(self, type_path, batch_size, shuffle=False):
         raise NotImplementedError("You must implement this for your task")
         raise NotImplementedError("You must implement this for your task")
@@ -212,7 +244,10 @@ class BaseTransformer(pl.LightningModule):
             help="Path to pretrained model or model identifier from huggingface.co/models",
             help="Path to pretrained model or model identifier from huggingface.co/models",
         )
         )
         parser.add_argument(
         parser.add_argument(
-            "--config_name", default="", type=str, help="Pretrained config name or path if not the same as model_name"
+            "--config_name",
+            default="",
+            type=str,
+            help="Pretrained config name or path if not the same as model_name",
         )
         )
         parser.add_argument(
         parser.add_argument(
             "--tokenizer_name",
             "--tokenizer_name",
@@ -246,7 +281,12 @@ class BaseTransformer(pl.LightningModule):
             type=float,
             type=float,
             help="Attention dropout probability (Optional). Goes into model.config",
             help="Attention dropout probability (Optional). Goes into model.config",
         )
         )
-        parser.add_argument("--learning_rate", default=5e-5, type=float, help="The initial learning rate for Adam.")
+        parser.add_argument(
+            "--learning_rate",
+            default=5e-5,
+            type=float,
+            help="The initial learning rate for Adam.",
+        )
         parser.add_argument(
         parser.add_argument(
             "--lr_scheduler",
             "--lr_scheduler",
             default="linear",
             default="linear",
@@ -255,11 +295,30 @@ class BaseTransformer(pl.LightningModule):
             type=str,
             type=str,
             help="Learning rate scheduler",
             help="Learning rate scheduler",
         )
         )
-        parser.add_argument("--weight_decay", default=0.0, type=float, help="Weight decay if we apply some.")
-        parser.add_argument("--adam_epsilon", default=1e-8, type=float, help="Epsilon for Adam optimizer.")
-        parser.add_argument("--warmup_steps", default=0, type=int, help="Linear warmup over warmup_steps.")
-        parser.add_argument("--num_workers", default=4, type=int, help="kwarg passed to DataLoader")
-        parser.add_argument("--num_train_epochs", dest="max_epochs", default=3, type=int)
+        parser.add_argument(
+            "--weight_decay",
+            default=0.0,
+            type=float,
+            help="Weight decay if we apply some.",
+        )
+        parser.add_argument(
+            "--adam_epsilon",
+            default=1e-8,
+            type=float,
+            help="Epsilon for Adam optimizer.",
+        )
+        parser.add_argument(
+            "--warmup_steps",
+            default=0,
+            type=int,
+            help="Linear warmup over warmup_steps.",
+        )
+        parser.add_argument(
+            "--num_workers", default=4, type=int, help="kwarg passed to DataLoader"
+        )
+        parser.add_argument(
+            "--num_train_epochs", dest="max_epochs", default=3, type=int
+        )
         parser.add_argument("--train_batch_size", default=32, type=int)
         parser.add_argument("--train_batch_size", default=32, type=int)
         parser.add_argument("--eval_batch_size", default=32, type=int)
         parser.add_argument("--eval_batch_size", default=32, type=int)
         parser.add_argument("--adafactor", action="store_true")
         parser.add_argument("--adafactor", action="store_true")
@@ -283,7 +342,9 @@ class LoggingCallback(pl.Callback):
         rank_zero_info("***** Test results *****")
         rank_zero_info("***** Test results *****")
         metrics = trainer.callback_metrics
         metrics = trainer.callback_metrics
         # Log and save results to file
         # Log and save results to file
-        output_test_results_file = os.path.join(pl_module.hparams.output_dir, "test_results.txt")
+        output_test_results_file = os.path.join(
+            pl_module.hparams.output_dir, "test_results.txt"
+        )
         with open(output_test_results_file, "w") as writer:
         with open(output_test_results_file, "w") as writer:
             for key in sorted(metrics):
             for key in sorted(metrics):
                 if key not in ["log", "progress_bar"]:
                 if key not in ["log", "progress_bar"]:
@@ -314,9 +375,21 @@ def add_generic_args(parser, root_dir) -> None:
         "See details at https://nvidia.github.io/apex/amp.html",
         "See details at https://nvidia.github.io/apex/amp.html",
     )
     )
     parser.add_argument("--n_tpu_cores", dest="tpu_cores", type=int)
     parser.add_argument("--n_tpu_cores", dest="tpu_cores", type=int)
-    parser.add_argument("--max_grad_norm", dest="gradient_clip_val", default=1.0, type=float, help="Max gradient norm")
-    parser.add_argument("--do_train", action="store_true", help="Whether to run training.")
-    parser.add_argument("--do_predict", action="store_true", help="Whether to run predictions on the test set.")
+    parser.add_argument(
+        "--max_grad_norm",
+        dest="gradient_clip_val",
+        default=1.0,
+        type=float,
+        help="Max gradient norm",
+    )
+    parser.add_argument(
+        "--do_train", action="store_true", help="Whether to run training."
+    )
+    parser.add_argument(
+        "--do_predict",
+        action="store_true",
+        help="Whether to run predictions on the test set.",
+    )
     parser.add_argument(
     parser.add_argument(
         "--gradient_accumulation_steps",
         "--gradient_accumulation_steps",
         dest="accumulate_grad_batches",
         dest="accumulate_grad_batches",
@@ -324,7 +397,9 @@ def add_generic_args(parser, root_dir) -> None:
         default=1,
         default=1,
         help="Number of updates steps to accumulate before performing a backward/update pass.",
         help="Number of updates steps to accumulate before performing a backward/update pass.",
     )
     )
-    parser.add_argument("--seed", type=int, default=42, help="random seed for initialization")
+    parser.add_argument(
+        "--seed", type=int, default=42, help="random seed for initialization"
+    )
 
 
 
 
 def generic_train(
 def generic_train(
@@ -335,7 +410,7 @@ def generic_train(
     extra_callbacks=[],
     extra_callbacks=[],
     checkpoint_callback=None,
     checkpoint_callback=None,
     logging_callback=None,
     logging_callback=None,
-    **extra_train_kwargs
+    **extra_train_kwargs,
 ):
 ):
     pl.seed_everything(args.seed)
     pl.seed_everything(args.seed)
 
 
@@ -346,7 +421,11 @@ def generic_train(
     # add custom checkpoints
     # add custom checkpoints
     if checkpoint_callback is None:
     if checkpoint_callback is None:
         checkpoint_callback = pl.callbacks.ModelCheckpoint(
         checkpoint_callback = pl.callbacks.ModelCheckpoint(
-            filepath=args.output_dir, prefix="checkpoint", monitor="val_loss", mode="min", save_top_k=1
+            filepath=args.output_dir,
+            prefix="checkpoint",
+            monitor="val_loss",
+            mode="min",
+            save_top_k=1,
         )
         )
     if logging_callback is None:
     if logging_callback is None:
         logging_callback = LoggingCallback()
         logging_callback = LoggingCallback()

@@ -141,7 +141,11 @@ def invert_mask(attention_mask):
 
 
 
 
 def _prepare_bart_decoder_inputs(
 def _prepare_bart_decoder_inputs(
-    config, input_ids, decoder_input_ids=None, decoder_padding_mask=None, causal_mask_dtype=torch.float32
+    config,
+    input_ids,
+    decoder_input_ids=None,
+    decoder_padding_mask=None,
+    causal_mask_dtype=torch.float32,
 ):
 ):
     """Prepare masks that ignore padding tokens in the decoder and a causal mask for the decoder if
     """Prepare masks that ignore padding tokens in the decoder and a causal mask for the decoder if
     none are provided. This mimics the default behavior in fairseq. To override it pass in masks.
     none are provided. This mimics the default behavior in fairseq. To override it pass in masks.
@@ -184,7 +188,9 @@ class PretrainedBartModel(PreTrainedModel):
     @property
     @property
     def dummy_inputs(self):
     def dummy_inputs(self):
         pad_token = self.config.pad_token_id
         pad_token = self.config.pad_token_id
-        input_ids = torch.tensor([[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device)
+        input_ids = torch.tensor(
+            [[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device
+        )
         dummy_inputs = {
         dummy_inputs = {
             "attention_mask": input_ids.ne(pad_token),
             "attention_mask": input_ids.ne(pad_token),
             "input_ids": input_ids,
             "input_ids": input_ids,
@@ -229,7 +235,11 @@ class EncoderLayer(nn.Module):
     def __init__(self, config: BartConfig):
     def __init__(self, config: BartConfig):
         super().__init__()
         super().__init__()
         self.embed_dim = config.d_model
         self.embed_dim = config.d_model
-        self.self_attn = Attention(self.embed_dim, config.encoder_attention_heads, dropout=config.attention_dropout)
+        self.self_attn = Attention(
+            self.embed_dim,
+            config.encoder_attention_heads,
+            dropout=config.attention_dropout,
+        )
         self.normalize_before = config.normalize_before
         self.normalize_before = config.normalize_before
         self.self_attn_layer_norm = LayerNorm(self.embed_dim)
         self.self_attn_layer_norm = LayerNorm(self.embed_dim)
         self.dropout = config.dropout
         self.dropout = config.dropout
@@ -255,7 +265,10 @@ class EncoderLayer(nn.Module):
         if self.normalize_before:
         if self.normalize_before:
             x = self.self_attn_layer_norm(x)
             x = self.self_attn_layer_norm(x)
         x, attn_weights = self.self_attn(
         x, attn_weights = self.self_attn(
-            query=x, key=x, key_padding_mask=encoder_padding_mask, output_attentions=output_attentions
+            query=x,
+            key=x,
+            key_padding_mask=encoder_padding_mask,
+            output_attentions=output_attentions,
         )
         )
         x = F.dropout(x, p=self.dropout, training=self.training)
         x = F.dropout(x, p=self.dropout, training=self.training)
         x = residual + x
         x = residual + x
@@ -308,13 +321,23 @@ class BartEncoder(nn.Module):
                 config.extra_pos_embeddings,
                 config.extra_pos_embeddings,
             )
             )
         self.embed_patches = nn.Embedding(3, config.d_model, padding_idx=0)
         self.embed_patches = nn.Embedding(3, config.d_model, padding_idx=0)
-        self.layers = nn.ModuleList([EncoderLayer(config) for _ in range(config.encoder_layers)])
-        self.layernorm_embedding = LayerNorm(embed_dim) if config.normalize_embedding else nn.Identity()
+        self.layers = nn.ModuleList(
+            [EncoderLayer(config) for _ in range(config.encoder_layers)]
+        )
+        self.layernorm_embedding = (
+            LayerNorm(embed_dim) if config.normalize_embedding else nn.Identity()
+        )
         # mbart has one extra layer_norm
         # mbart has one extra layer_norm
         self.layer_norm = LayerNorm(config.d_model) if config.normalize_before else None
         self.layer_norm = LayerNorm(config.d_model) if config.normalize_before else None
 
 
     def forward(
     def forward(
-        self, input_ids, patch_ids, attention_mask=None, output_attentions=False, output_hidden_states=False, return_dict=False
+        self,
+        input_ids,
+        patch_ids,
+        attention_mask=None,
+        output_attentions=False,
+        output_hidden_states=False,
+        return_dict=False,
     ):
     ):
         """
         """
         Args:
         Args:
@@ -352,10 +375,14 @@ class BartEncoder(nn.Module):
                 encoder_states.append(x)
                 encoder_states.append(x)
             # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description)
             # add LayerDrop (see https://arxiv.org/abs/1909.11556 for description)
             dropout_probability = random.uniform(0, 1)
             dropout_probability = random.uniform(0, 1)
-            if self.training and (dropout_probability < self.layerdrop):  # skip the layer
+            if self.training and (
+                dropout_probability < self.layerdrop
+            ):  # skip the layer
                 attn = None
                 attn = None
             else:
             else:
-                x, attn = encoder_layer(x, attention_mask, output_attentions=output_attentions)
+                x, attn = encoder_layer(
+                    x, attention_mask, output_attentions=output_attentions
+                )
 
 
             if output_attentions:
             if output_attentions:
                 all_attentions = all_attentions + (attn,)
                 all_attentions = all_attentions + (attn,)
@@ -365,14 +392,20 @@ class BartEncoder(nn.Module):
         if output_hidden_states:
         if output_hidden_states:
             encoder_states.append(x)
             encoder_states.append(x)
             # T x B x C -> B x T x C
             # T x B x C -> B x T x C
-            encoder_states = tuple(hidden_state.transpose(0, 1) for hidden_state in encoder_states)
+            encoder_states = tuple(
+                hidden_state.transpose(0, 1) for hidden_state in encoder_states
+            )
 
 
         # T x B x C -> B x T x C
         # T x B x C -> B x T x C
         x = x.transpose(0, 1)
         x = x.transpose(0, 1)
 
 
         if not return_dict:
         if not return_dict:
-            return tuple(v for v in [x, encoder_states, all_attentions] if v is not None)
-        return BaseModelOutput(last_hidden_state=x, hidden_states=encoder_states, attentions=all_attentions)
+            return tuple(
+                v for v in [x, encoder_states, all_attentions] if v is not None
+            )
+        return BaseModelOutput(
+            last_hidden_state=x, hidden_states=encoder_states, attentions=all_attentions
+        )
 
 
 
 
 class DecoderLayer(nn.Module):
 class DecoderLayer(nn.Module):
@@ -498,8 +531,12 @@ class BartDecoder(nn.Module):
         self.layers = nn.ModuleList(
         self.layers = nn.ModuleList(
             [DecoderLayer(config) for _ in range(config.decoder_layers)]
             [DecoderLayer(config) for _ in range(config.decoder_layers)]
         )  # type: List[DecoderLayer]
         )  # type: List[DecoderLayer]
-        self.layernorm_embedding = LayerNorm(config.d_model) if config.normalize_embedding else nn.Identity()
-        self.layer_norm = LayerNorm(config.d_model) if config.add_final_layer_norm else None
+        self.layernorm_embedding = (
+            LayerNorm(config.d_model) if config.normalize_embedding else nn.Identity()
+        )
+        self.layer_norm = (
+            LayerNorm(config.d_model) if config.add_final_layer_norm else None
+        )
 
 
     def forward(
     def forward(
         self,
         self,
@@ -595,23 +632,34 @@ class BartDecoder(nn.Module):
             if use_cache:
             if use_cache:
                 next_decoder_cache.append(layer_past.copy())
                 next_decoder_cache.append(layer_past.copy())
 
 
-            if self.layer_norm and (idx == len(self.layers) - 1):  # if config.add_final_layer_norm (mBART)
+            if self.layer_norm and (
+                idx == len(self.layers) - 1
+            ):  # if config.add_final_layer_norm (mBART)
                 x = self.layer_norm(x)
                 x = self.layer_norm(x)
             if output_attentions:
             if output_attentions:
                 all_self_attns += (layer_self_attn,)
                 all_self_attns += (layer_self_attn,)
 
 
         # Convert to standard output format: (seq_len, BS, model_dim) -> (BS, seq_len, model_dim)
         # Convert to standard output format: (seq_len, BS, model_dim) -> (BS, seq_len, model_dim)
         if output_hidden_states:
         if output_hidden_states:
-            all_hidden_states = tuple(hidden_state.transpose(0, 1) for hidden_state in all_hidden_states)
+            all_hidden_states = tuple(
+                hidden_state.transpose(0, 1) for hidden_state in all_hidden_states
+            )
         x = x.transpose(0, 1)
         x = x.transpose(0, 1)
         encoder_hidden_states = encoder_hidden_states.transpose(0, 1)
         encoder_hidden_states = encoder_hidden_states.transpose(0, 1)
 
 
         next_cache = next_decoder_cache if use_cache else None
         next_cache = next_decoder_cache if use_cache else None
 
 
         if not return_dict:
         if not return_dict:
-            return tuple(v for v in [x, next_cache, all_hidden_states, all_self_attns] if v is not None)
+            return tuple(
+                v
+                for v in [x, next_cache, all_hidden_states, all_self_attns]
+                if v is not None
+            )
         return BaseModelOutputWithPast(
         return BaseModelOutputWithPast(
-            last_hidden_state=x, past_key_values=next_cache, hidden_states=all_hidden_states, attentions=all_self_attns
+            last_hidden_state=x,
+            past_key_values=next_cache,
+            hidden_states=all_hidden_states,
+            attentions=all_self_attns,
         )
         )
 
 
 
 
@@ -638,7 +686,9 @@ class Attention(nn.Module):
         self.num_heads = num_heads
         self.num_heads = num_heads
         self.dropout = dropout
         self.dropout = dropout
         self.head_dim = embed_dim // num_heads
         self.head_dim = embed_dim // num_heads
-        assert self.head_dim * num_heads == self.embed_dim, "embed_dim must be divisible by num_heads"
+        assert (
+            self.head_dim * num_heads == self.embed_dim
+        ), "embed_dim must be divisible by num_heads"
         self.scaling = self.head_dim ** -0.5
         self.scaling = self.head_dim ** -0.5
 
 
         self.encoder_decoder_attention = encoder_decoder_attention
         self.encoder_decoder_attention = encoder_decoder_attention
@@ -649,7 +699,11 @@ class Attention(nn.Module):
         self.cache_key = "encoder_decoder" if self.encoder_decoder_attention else "self"
         self.cache_key = "encoder_decoder" if self.encoder_decoder_attention else "self"
 
 
     def _shape(self, tensor, seq_len, bsz):
     def _shape(self, tensor, seq_len, bsz):
-        return tensor.contiguous().view(seq_len, bsz * self.num_heads, self.head_dim).transpose(0, 1)
+        return (
+            tensor.contiguous()
+            .view(seq_len, bsz * self.num_heads, self.head_dim)
+            .transpose(0, 1)
+        )
 
 
     def forward(
     def forward(
         self,
         self,
@@ -693,7 +747,9 @@ class Attention(nn.Module):
             v = self._shape(v, -1, bsz)
             v = self._shape(v, -1, bsz)
 
 
         if saved_state is not None:
         if saved_state is not None:
-            k, v, key_padding_mask = self._use_saved_state(k, v, saved_state, key_padding_mask, static_kv, bsz)
+            k, v, key_padding_mask = self._use_saved_state(
+                k, v, saved_state, key_padding_mask, static_kv, bsz
+            )
 
 
         # Update cache
         # Update cache
         layer_state[self.cache_key] = {
         layer_state[self.cache_key] = {
@@ -708,7 +764,9 @@ class Attention(nn.Module):
         assert attn_weights.size() == (bsz * self.num_heads, tgt_len, src_len)
         assert attn_weights.size() == (bsz * self.num_heads, tgt_len, src_len)
 
 
         if attn_mask is not None:
         if attn_mask is not None:
-            attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attn_mask
+            attn_weights = (
+                attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attn_mask
+            )
             attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
             attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
 
 
         # This is part of a workaround to get around fork/join parallelism not supporting Optional types.
         # This is part of a workaround to get around fork/join parallelism not supporting Optional types.
@@ -725,16 +783,14 @@ class Attention(nn.Module):
             attn_weights = attn_weights.masked_fill(reshaped, float("-inf"))
             attn_weights = attn_weights.masked_fill(reshaped, float("-inf"))
             attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
             attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
         attn_weights = F.softmax(attn_weights, dim=-1)
         attn_weights = F.softmax(attn_weights, dim=-1)
-        attn_probs = F.dropout(
-            attn_weights,
-            p=self.dropout,
-            training=self.training,
-        )
+        attn_probs = F.dropout(attn_weights, p=self.dropout, training=self.training,)
 
 
         assert v is not None
         assert v is not None
         attn_output = torch.bmm(attn_probs, v)
         attn_output = torch.bmm(attn_probs, v)
         assert attn_output.size() == (bsz * self.num_heads, tgt_len, self.head_dim)
         assert attn_output.size() == (bsz * self.num_heads, tgt_len, self.head_dim)
-        attn_output = attn_output.transpose(0, 1).contiguous().view(tgt_len, bsz, embed_dim)
+        attn_output = (
+            attn_output.transpose(0, 1).contiguous().view(tgt_len, bsz, embed_dim)
+        )
         attn_output = self.out_proj(attn_output)
         attn_output = self.out_proj(attn_output)
         if output_attentions:
         if output_attentions:
             attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
             attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
@@ -763,12 +819,16 @@ class Attention(nn.Module):
                 assert v is not None
                 assert v is not None
                 v = torch.cat([prev_value, v], dim=1)
                 v = torch.cat([prev_value, v], dim=1)
         assert k is not None and v is not None
         assert k is not None and v is not None
-        prev_key_padding_mask: Optional[Tensor] = saved_state.get("prev_key_padding_mask", None)
+        prev_key_padding_mask: Optional[Tensor] = saved_state.get(
+            "prev_key_padding_mask", None
+        )
         if prev_key_padding_mask is not None:
         if prev_key_padding_mask is not None:
             if static_kv:
             if static_kv:
                 new_key_padding_mask = prev_key_padding_mask
                 new_key_padding_mask = prev_key_padding_mask
             else:
             else:
-                new_key_padding_mask = torch.cat([prev_key_padding_mask, key_padding_mask], dim=1)
+                new_key_padding_mask = torch.cat(
+                    [prev_key_padding_mask, key_padding_mask], dim=1
+                )
         else:
         else:
             new_key_padding_mask = key_padding_mask
             new_key_padding_mask = key_padding_mask
         return k, v, new_key_padding_mask
         return k, v, new_key_padding_mask
@@ -780,11 +840,7 @@ class BartClassificationHead(nn.Module):
     # This can trivially be shared with RobertaClassificationHead
     # This can trivially be shared with RobertaClassificationHead
 
 
     def __init__(
     def __init__(
-        self,
-        input_dim,
-        inner_dim,
-        num_classes,
-        pooler_dropout,
+        self, input_dim, inner_dim, num_classes, pooler_dropout,
     ):
     ):
         super().__init__()
         super().__init__()
         self.dense = nn.Linear(input_dim, inner_dim)
         self.dense = nn.Linear(input_dim, inner_dim)
@@ -808,7 +864,9 @@ class LearnedPositionalEmbedding(nn.Embedding):
     position ids are passed to the forward function.
     position ids are passed to the forward function.
     """
     """
 
 
-    def __init__(self, num_embeddings: int, embedding_dim: int, padding_idx: int, offset):
+    def __init__(
+        self, num_embeddings: int, embedding_dim: int, padding_idx: int, offset
+    ):
         # Bart is set up so that if padding_idx is specified then offset the embedding ids by 2
         # Bart is set up so that if padding_idx is specified then offset the embedding ids by 2
         # and adjust num_embeddings appropriately. Other models dont have this hack
         # and adjust num_embeddings appropriately. Other models dont have this hack
         self.offset = offset
         self.offset = offset
@@ -820,10 +878,14 @@ class LearnedPositionalEmbedding(nn.Embedding):
         """Input is expected to be of size [bsz x seqlen]."""
         """Input is expected to be of size [bsz x seqlen]."""
         bsz, seq_len = input_ids.shape[:2]
         bsz, seq_len = input_ids.shape[:2]
         if use_cache:
         if use_cache:
-            positions = input_ids.data.new(1, 1).fill_(seq_len - 1)  # called before slicing
+            positions = input_ids.data.new(1, 1).fill_(
+                seq_len - 1
+            )  # called before slicing
         else:
         else:
             # starts at 0, ends at 1-seq_len
             # starts at 0, ends at 1-seq_len
-            positions = torch.arange(seq_len, dtype=torch.long, device=self.weight.device)
+            positions = torch.arange(
+                seq_len, dtype=torch.long, device=self.weight.device
+            )
         return super().forward(positions + self.offset)
         return super().forward(positions + self.offset)
 
 
 
 
@@ -896,16 +958,28 @@ class BartModel(PretrainedBartModel):
         if decoder_input_ids is None:
         if decoder_input_ids is None:
             use_cache = False
             use_cache = False
 
 
-        output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
+        output_attentions = (
+            output_attentions
+            if output_attentions is not None
+            else self.config.output_attentions
+        )
         output_hidden_states = (
         output_hidden_states = (
-            output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
+            output_hidden_states
+            if output_hidden_states is not None
+            else self.config.output_hidden_states
         )
         )
         use_cache = use_cache if use_cache is not None else self.config.use_cache
         use_cache = use_cache if use_cache is not None else self.config.use_cache
-        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+        return_dict = (
+            return_dict if return_dict is not None else self.config.use_return_dict
+        )
 
 
         # make masks if user doesn't supply
         # make masks if user doesn't supply
         if not use_cache:
         if not use_cache:
-            decoder_input_ids, decoder_padding_mask, causal_mask = _prepare_bart_decoder_inputs(
+            (
+                decoder_input_ids,
+                decoder_padding_mask,
+                causal_mask,
+            ) = _prepare_bart_decoder_inputs(
                 self.config,
                 self.config,
                 input_ids,
                 input_ids,
                 decoder_input_ids=decoder_input_ids,
                 decoder_input_ids=decoder_input_ids,
@@ -974,17 +1048,24 @@ class BartModel(PretrainedBartModel):
 
 
 
 
 @add_start_docstrings(
 @add_start_docstrings(
-    "The BART Model with a language modeling head. Can be used for summarization.", BART_START_DOCSTRING
+    "The BART Model with a language modeling head. Can be used for summarization.",
+    BART_START_DOCSTRING,
 )
 )
 class BartForConditionalGeneration(PretrainedBartModel):
 class BartForConditionalGeneration(PretrainedBartModel):
     base_model_prefix = "model"
     base_model_prefix = "model"
-    authorized_missing_keys = [r"final_logits_bias", r"encoder\.version", r"decoder\.version"]
+    authorized_missing_keys = [
+        r"final_logits_bias",
+        r"encoder\.version",
+        r"decoder\.version",
+    ]
 
 
     def __init__(self, config: BartConfig):
     def __init__(self, config: BartConfig):
         super().__init__(config)
         super().__init__(config)
         base_model = BartModel(config)
         base_model = BartModel(config)
         self.model = base_model
         self.model = base_model
-        self.register_buffer("final_logits_bias", torch.zeros((1, self.model.shared.num_embeddings)))
+        self.register_buffer(
+            "final_logits_bias", torch.zeros((1, self.model.shared.num_embeddings))
+        )
 
 
     def resize_token_embeddings(self, new_num_tokens: int) -> nn.Embedding:
     def resize_token_embeddings(self, new_num_tokens: int) -> nn.Embedding:
         old_num_tokens = self.model.shared.num_embeddings
         old_num_tokens = self.model.shared.num_embeddings
@@ -993,16 +1074,23 @@ class BartForConditionalGeneration(PretrainedBartModel):
         self._resize_final_logits_bias(new_num_tokens, old_num_tokens)
         self._resize_final_logits_bias(new_num_tokens, old_num_tokens)
         return new_embeddings
         return new_embeddings
 
 
-    def _resize_final_logits_bias(self, new_num_tokens: int, old_num_tokens: int) -> None:
+    def _resize_final_logits_bias(
+        self, new_num_tokens: int, old_num_tokens: int
+    ) -> None:
         if new_num_tokens <= old_num_tokens:
         if new_num_tokens <= old_num_tokens:
             new_bias = self.final_logits_bias[:, :new_num_tokens]
             new_bias = self.final_logits_bias[:, :new_num_tokens]
         else:
         else:
-            extra_bias = torch.zeros((1, new_num_tokens - old_num_tokens), device=self.final_logits_bias.device)
+            extra_bias = torch.zeros(
+                (1, new_num_tokens - old_num_tokens),
+                device=self.final_logits_bias.device,
+            )
             new_bias = torch.cat([self.final_logits_bias, extra_bias], dim=1)
             new_bias = torch.cat([self.final_logits_bias, extra_bias], dim=1)
         self.register_buffer("final_logits_bias", new_bias)
         self.register_buffer("final_logits_bias", new_bias)
 
 
     @add_start_docstrings_to_callable(BART_INPUTS_DOCSTRING)
     @add_start_docstrings_to_callable(BART_INPUTS_DOCSTRING)
-    @replace_return_docstrings(output_type=Seq2SeqLMOutput, config_class=_CONFIG_FOR_DOC)
+    @replace_return_docstrings(
+        output_type=Seq2SeqLMOutput, config_class=_CONFIG_FOR_DOC
+    )
     @add_end_docstrings(BART_GENERATION_EXAMPLE)
     @add_end_docstrings(BART_GENERATION_EXAMPLE)
     def forward(
     def forward(
         self,
         self,
@@ -1065,7 +1153,9 @@ class BartForConditionalGeneration(PretrainedBartModel):
                 FutureWarning,
                 FutureWarning,
             )
             )
             past_key_values = unused.pop("decoder_past_key_values")
             past_key_values = unused.pop("decoder_past_key_values")
-        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+        return_dict = (
+            return_dict if return_dict is not None else self.config.use_return_dict
+        )
 
 
         if labels is not None:
         if labels is not None:
             use_cache = False
             use_cache = False
@@ -1085,17 +1175,23 @@ class BartForConditionalGeneration(PretrainedBartModel):
             output_hidden_states=output_hidden_states,
             output_hidden_states=output_hidden_states,
             return_dict=return_dict,
             return_dict=return_dict,
         )
         )
-        lm_logits = F.linear(outputs[0], self.model.shared.weight, bias=self.final_logits_bias)
+        lm_logits = F.linear(
+            outputs[0], self.model.shared.weight, bias=self.final_logits_bias
+        )
 
 
         masked_lm_loss = None
         masked_lm_loss = None
         if labels is not None:
         if labels is not None:
             loss_fct = CrossEntropyLoss()
             loss_fct = CrossEntropyLoss()
             # TODO(SS): do we need to ignore pad tokens in labels?
             # TODO(SS): do we need to ignore pad tokens in labels?
-            masked_lm_loss = loss_fct(lm_logits.view(-1, self.config.vocab_size), labels.view(-1))
+            masked_lm_loss = loss_fct(
+                lm_logits.view(-1, self.config.vocab_size), labels.view(-1)
+            )
 
 
         if not return_dict:
         if not return_dict:
             output = (lm_logits,) + outputs[1:]
             output = (lm_logits,) + outputs[1:]
-            return ((masked_lm_loss,) + output) if masked_lm_loss is not None else output
+            return (
+                ((masked_lm_loss,) + output) if masked_lm_loss is not None else output
+            )
 
 
         return Seq2SeqLMOutput(
         return Seq2SeqLMOutput(
             loss=masked_lm_loss,
             loss=masked_lm_loss,
@@ -1109,7 +1205,13 @@ class BartForConditionalGeneration(PretrainedBartModel):
         )
         )
 
 
     def prepare_inputs_for_generation(
     def prepare_inputs_for_generation(
-        self, decoder_input_ids, past, attention_mask, use_cache, encoder_outputs, **kwargs
+        self,
+        decoder_input_ids,
+        past,
+        attention_mask,
+        use_cache,
+        encoder_outputs,
+        **kwargs,
     ):
     ):
         return {
         return {
             "input_ids": None,  # encoder_outputs is defined. input_ids not needed
             "input_ids": None,  # encoder_outputs is defined. input_ids not needed
@@ -1130,7 +1232,9 @@ class BartForConditionalGeneration(PretrainedBartModel):
 
 
     def _force_token_ids_generation(self, scores, token_id) -> None:
     def _force_token_ids_generation(self, scores, token_id) -> None:
         """force one of token_ids to be generated by setting prob of all other tokens to 0 (logprob=-float("inf"))"""
         """force one of token_ids to be generated by setting prob of all other tokens to 0 (logprob=-float("inf"))"""
-        scores[:, [x for x in range(self.config.vocab_size) if x != token_id]] = -float("inf")
+        scores[:, [x for x in range(self.config.vocab_size) if x != token_id]] = -float(
+            "inf"
+        )
 
 
     @staticmethod
     @staticmethod
     def _reorder_cache(past, beam_idx):
     def _reorder_cache(past, beam_idx):
@@ -1138,7 +1242,8 @@ class BartForConditionalGeneration(PretrainedBartModel):
         for layer_past in past:
         for layer_past in past:
             # get the correct batch idx from decoder layer's batch dim for cross and self-attn
             # get the correct batch idx from decoder layer's batch dim for cross and self-attn
             layer_past_new = {
             layer_past_new = {
-                attn_key: _reorder_buffer(attn_cache, beam_idx) for attn_key, attn_cache in layer_past.items()
+                attn_key: _reorder_buffer(attn_cache, beam_idx)
+                for attn_key, attn_cache in layer_past.items()
             }
             }
             reordered_past.append(layer_past_new)
             reordered_past.append(layer_past_new)
         return reordered_past
         return reordered_past
@@ -1159,10 +1264,7 @@ class BartForSequenceClassification(PretrainedBartModel):
         super().__init__(config, **kwargs)
         super().__init__(config, **kwargs)
         self.model = BartModel(config)
         self.model = BartModel(config)
         self.classification_head = BartClassificationHead(
         self.classification_head = BartClassificationHead(
-            config.d_model,
-            config.d_model,
-            config.num_labels,
-            config.classif_dropout,
+            config.d_model, config.d_model, config.num_labels, config.classif_dropout,
         )
         )
         self.model._init_weights(self.classification_head.dense)
         self.model._init_weights(self.classification_head.dense)
         self.model._init_weights(self.classification_head.out_proj)
         self.model._init_weights(self.classification_head.out_proj)
@@ -1193,7 +1295,9 @@ class BartForSequenceClassification(PretrainedBartModel):
             Indices should be in :obj:`[0, ..., config.num_labels - 1]`.
             Indices should be in :obj:`[0, ..., config.num_labels - 1]`.
             If :obj:`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
             If :obj:`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
         """
         """
-        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+        return_dict = (
+            return_dict if return_dict is not None else self.config.use_return_dict
+        )
         if labels is not None:
         if labels is not None:
             use_cache = False
             use_cache = False
 
 
@@ -1212,7 +1316,9 @@ class BartForSequenceClassification(PretrainedBartModel):
         eos_mask = input_ids.eq(self.config.eos_token_id)
         eos_mask = input_ids.eq(self.config.eos_token_id)
         if len(torch.unique(eos_mask.sum(1))) > 1:
         if len(torch.unique(eos_mask.sum(1))) > 1:
             raise ValueError("All examples must have the same number of <eos> tokens.")
             raise ValueError("All examples must have the same number of <eos> tokens.")
-        sentence_representation = x[eos_mask, :].view(x.size(0), -1, x.size(-1))[:, -1, :]
+        sentence_representation = x[eos_mask, :].view(x.size(0), -1, x.size(-1))[
+            :, -1, :
+        ]
         logits = self.classification_head(sentence_representation)
         logits = self.classification_head(sentence_representation)
 
 
         loss = None
         loss = None
@@ -1284,7 +1390,9 @@ class BartForQuestionAnswering(PretrainedBartModel):
             Positions are clamped to the length of the sequence (`sequence_length`).
             Positions are clamped to the length of the sequence (`sequence_length`).
             Position outside of the sequence are not taken into account for computing the loss.
             Position outside of the sequence are not taken into account for computing the loss.
         """
         """
-        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+        return_dict = (
+            return_dict if return_dict is not None else self.config.use_return_dict
+        )
         if start_positions is not None and end_positions is not None:
         if start_positions is not None and end_positions is not None:
             use_cache = False
             use_cache = False
 
 
@@ -1325,10 +1433,7 @@ class BartForQuestionAnswering(PretrainedBartModel):
             total_loss = (start_loss + end_loss) / 2
             total_loss = (start_loss + end_loss) / 2
 
 
         if not return_dict:
         if not return_dict:
-            output = (
-                start_logits,
-                end_logits,
-            ) + outputs[1:]
+            output = (start_logits, end_logits,) + outputs[1:]
             return ((total_loss,) + output) if total_loss is not None else output
             return ((total_loss,) + output) if total_loss is not None else output
 
 
         return Seq2SeqQuestionAnsweringModelOutput(
         return Seq2SeqQuestionAnsweringModelOutput(
@@ -1350,7 +1455,9 @@ class SinusoidalPositionalEmbedding(nn.Embedding):
     def __init__(self, num_positions, embedding_dim, padding_idx=None):
     def __init__(self, num_positions, embedding_dim, padding_idx=None):
         super().__init__(num_positions, embedding_dim)
         super().__init__(num_positions, embedding_dim)
         if embedding_dim % 2 != 0:
         if embedding_dim % 2 != 0:
-            raise NotImplementedError(f"odd embedding_dim {embedding_dim} not supported")
+            raise NotImplementedError(
+                f"odd embedding_dim {embedding_dim} not supported"
+            )
         self.weight = self._init_weight(self.weight)
         self.weight = self._init_weight(self.weight)
 
 
     @staticmethod
     @staticmethod
@@ -1360,9 +1467,14 @@ class SinusoidalPositionalEmbedding(nn.Embedding):
         """
         """
         n_pos, dim = out.shape
         n_pos, dim = out.shape
         position_enc = np.array(
         position_enc = np.array(
-            [[pos / np.power(10000, 2 * (j // 2) / dim) for j in range(dim)] for pos in range(n_pos)]
+            [
+                [pos / np.power(10000, 2 * (j // 2) / dim) for j in range(dim)]
+                for pos in range(n_pos)
+            ]
         )
         )
-        out[:, 0 : dim // 2] = torch.FloatTensor(np.sin(position_enc[:, 0::2]))  # This line breaks for odd n_pos
+        out[:, 0 : dim // 2] = torch.FloatTensor(
+            np.sin(position_enc[:, 0::2])
+        )  # This line breaks for odd n_pos
         out[:, dim // 2 :] = torch.FloatTensor(np.cos(position_enc[:, 1::2]))
         out[:, dim // 2 :] = torch.FloatTensor(np.cos(position_enc[:, 1::2]))
         out.detach_()
         out.detach_()
         out.requires_grad = False
         out.requires_grad = False
@@ -1373,8 +1485,12 @@ class SinusoidalPositionalEmbedding(nn.Embedding):
         """Input is expected to be of size [bsz x seqlen]."""
         """Input is expected to be of size [bsz x seqlen]."""
         bsz, seq_len = input_ids.shape[:2]
         bsz, seq_len = input_ids.shape[:2]
         if use_cache:
         if use_cache:
-            positions = input_ids.data.new(1, 1).fill_(seq_len - 1)  # called before slicing
+            positions = input_ids.data.new(1, 1).fill_(
+                seq_len - 1
+            )  # called before slicing
         else:
         else:
             # starts at 0, ends at 1-seq_len
             # starts at 0, ends at 1-seq_len
-            positions = torch.arange(seq_len, dtype=torch.long, device=self.weight.device)
+            positions = torch.arange(
+                seq_len, dtype=torch.long, device=self.weight.device
+            )
         return super().forward(positions)
         return super().forward(positions)

@@ -80,7 +80,9 @@ def find_pruneable_heads_and_indices(
         :obj:`Tuple[Set[int], torch.LongTensor]`: A tuple with the remaining heads and their corresponding indices.
         :obj:`Tuple[Set[int], torch.LongTensor]`: A tuple with the remaining heads and their corresponding indices.
     """
     """
     mask = torch.ones(n_heads, head_size)
     mask = torch.ones(n_heads, head_size)
-    heads = set(heads) - already_pruned_heads  # Convert to set and remove already pruned heads
+    heads = (
+        set(heads) - already_pruned_heads
+    )  # Convert to set and remove already pruned heads
     for head in heads:
     for head in heads:
         # Compute how many pruned heads are before the head and move the index accordingly
         # Compute how many pruned heads are before the head and move the index accordingly
         head = head - sum(1 if h < head else 0 for h in already_pruned_heads)
         head = head - sum(1 if h < head else 0 for h in already_pruned_heads)
@@ -106,7 +108,11 @@ class ModuleUtilsMixin:
         Returns:
         Returns:
             :obj:`int`: The number of parameters.
             :obj:`int`: The number of parameters.
         """
         """
-        params = filter(lambda x: x.requires_grad, self.parameters()) if only_trainable else self.parameters()
+        params = (
+            filter(lambda x: x.requires_grad, self.parameters())
+            if only_trainable
+            else self.parameters()
+        )
         return sum(p.numel() for p in params)
         return sum(p.numel() for p in params)
 
 
     @staticmethod
     @staticmethod
@@ -114,7 +120,9 @@ class ModuleUtilsMixin:
         try:
         try:
             import psutil
             import psutil
         except (ImportError):
         except (ImportError):
-            raise ImportError("You need to install psutil (pip install psutil) to use memory tracing.")
+            raise ImportError(
+                "You need to install psutil (pip install psutil) to use memory tracing."
+            )
 
 
         process = psutil.Process(os.getpid())
         process = psutil.Process(os.getpid())
         mem = process.memory_info()
         mem = process.memory_info()
@@ -126,13 +134,17 @@ class ModuleUtilsMixin:
         try:
         try:
             import psutil
             import psutil
         except (ImportError):
         except (ImportError):
-            raise ImportError("You need to install psutil (pip install psutil) to use memory tracing.")
+            raise ImportError(
+                "You need to install psutil (pip install psutil) to use memory tracing."
+            )
 
 
         process = psutil.Process(os.getpid())
         process = psutil.Process(os.getpid())
         mem = process.memory_info()
         mem = process.memory_info()
         module.mem_rss_post_forward = mem.rss
         module.mem_rss_post_forward = mem.rss
         mem_rss_diff = module.mem_rss_post_forward - module.mem_rss_pre_forward
         mem_rss_diff = module.mem_rss_post_forward - module.mem_rss_pre_forward
-        module.mem_rss_diff = mem_rss_diff + (module.mem_rss_diff if hasattr(module, "mem_rss_diff") else 0)
+        module.mem_rss_diff = mem_rss_diff + (
+            module.mem_rss_diff if hasattr(module, "mem_rss_diff") else 0
+        )
         return None
         return None
 
 
     def add_memory_hooks(self):
     def add_memory_hooks(self):
@@ -169,7 +181,9 @@ class ModuleUtilsMixin:
             # For nn.DataParallel compatibility in PyTorch 1.5
             # For nn.DataParallel compatibility in PyTorch 1.5
 
 
             def find_tensor_attributes(module: nn.Module) -> List[Tuple[str, Tensor]]:
             def find_tensor_attributes(module: nn.Module) -> List[Tuple[str, Tensor]]:
-                tuples = [(k, v) for k, v in module.__dict__.items() if torch.is_tensor(v)]
+                tuples = [
+                    (k, v) for k, v in module.__dict__.items() if torch.is_tensor(v)
+                ]
                 return tuples
                 return tuples
 
 
             gen = self._named_members(get_members_fn=find_tensor_attributes)
             gen = self._named_members(get_members_fn=find_tensor_attributes)
@@ -187,7 +201,9 @@ class ModuleUtilsMixin:
             # For nn.DataParallel compatibility in PyTorch 1.5
             # For nn.DataParallel compatibility in PyTorch 1.5
 
 
             def find_tensor_attributes(module: nn.Module) -> List[Tuple[str, Tensor]]:
             def find_tensor_attributes(module: nn.Module) -> List[Tuple[str, Tensor]]:
-                tuples = [(k, v) for k, v in module.__dict__.items() if torch.is_tensor(v)]
+                tuples = [
+                    (k, v) for k, v in module.__dict__.items() if torch.is_tensor(v)
+                ]
                 return tuples
                 return tuples
 
 
             gen = self._named_members(get_members_fn=find_tensor_attributes)
             gen = self._named_members(get_members_fn=find_tensor_attributes)
@@ -213,12 +229,18 @@ class ModuleUtilsMixin:
         # /transformer/transformer_layers.py#L270
         # /transformer/transformer_layers.py#L270
         # encoder_extended_attention_mask = (encoder_extended_attention_mask ==
         # encoder_extended_attention_mask = (encoder_extended_attention_mask ==
         # encoder_extended_attention_mask.transpose(-1, -2))
         # encoder_extended_attention_mask.transpose(-1, -2))
-        encoder_extended_attention_mask = encoder_extended_attention_mask.to(dtype=self.dtype)  # fp16 compatibility
+        encoder_extended_attention_mask = encoder_extended_attention_mask.to(
+            dtype=self.dtype
+        )  # fp16 compatibility
 
 
         if self.dtype == torch.float16:
         if self.dtype == torch.float16:
-            encoder_extended_attention_mask = (1.0 - encoder_extended_attention_mask) * -1e4
+            encoder_extended_attention_mask = (
+                1.0 - encoder_extended_attention_mask
+            ) * -1e4
         elif self.dtype == torch.float32:
         elif self.dtype == torch.float32:
-            encoder_extended_attention_mask = (1.0 - encoder_extended_attention_mask) * -1e9
+            encoder_extended_attention_mask = (
+                1.0 - encoder_extended_attention_mask
+            ) * -1e9
         else:
         else:
             raise ValueError(
             raise ValueError(
                 "{} not recognized. `dtype` should be set to either `torch.float32` or `torch.float16`".format(
                 "{} not recognized. `dtype` should be set to either `torch.float32` or `torch.float16`".format(
@@ -228,7 +250,9 @@ class ModuleUtilsMixin:
 
 
         return encoder_extended_attention_mask
         return encoder_extended_attention_mask
 
 
-    def get_extended_attention_mask(self, attention_mask: Tensor, input_shape: Tuple[int], device: device) -> Tensor:
+    def get_extended_attention_mask(
+        self, attention_mask: Tensor, input_shape: Tuple[int], device: device
+    ) -> Tensor:
         """
         """
         Makes broadcastable attention and causal masks so that future and masked tokens are ignored.
         Makes broadcastable attention and causal masks so that future and masked tokens are ignored.
 
 
@@ -254,10 +278,15 @@ class ModuleUtilsMixin:
             if self.config.is_decoder:
             if self.config.is_decoder:
                 batch_size, seq_length = input_shape
                 batch_size, seq_length = input_shape
                 seq_ids = torch.arange(seq_length, device=device)
                 seq_ids = torch.arange(seq_length, device=device)
-                causal_mask = seq_ids[None, None, :].repeat(batch_size, seq_length, 1) <= seq_ids[None, :, None]
+                causal_mask = (
+                    seq_ids[None, None, :].repeat(batch_size, seq_length, 1)
+                    <= seq_ids[None, :, None]
+                )
                 # causal and attention masks must have same type with pytorch version < 1.3
                 # causal and attention masks must have same type with pytorch version < 1.3
                 causal_mask = causal_mask.to(attention_mask.dtype)
                 causal_mask = causal_mask.to(attention_mask.dtype)
-                extended_attention_mask = causal_mask[:, None, :, :] * attention_mask[:, None, None, :]
+                extended_attention_mask = (
+                    causal_mask[:, None, :, :] * attention_mask[:, None, None, :]
+                )
             else:
             else:
                 extended_attention_mask = attention_mask[:, None, None, :]
                 extended_attention_mask = attention_mask[:, None, None, :]
         else:
         else:
@@ -272,12 +301,17 @@ class ModuleUtilsMixin:
         # positions we want to attend and -10000.0 for masked positions.
         # positions we want to attend and -10000.0 for masked positions.
         # Since we are adding it to the raw scores before the softmax, this is
         # Since we are adding it to the raw scores before the softmax, this is
         # effectively the same as removing these entirely.
         # effectively the same as removing these entirely.
-        extended_attention_mask = extended_attention_mask.to(dtype=self.dtype)  # fp16 compatibility
+        extended_attention_mask = extended_attention_mask.to(
+            dtype=self.dtype
+        )  # fp16 compatibility
         extended_attention_mask = (1.0 - extended_attention_mask) * -10000.0
         extended_attention_mask = (1.0 - extended_attention_mask) * -10000.0
         return extended_attention_mask
         return extended_attention_mask
 
 
     def get_head_mask(
     def get_head_mask(
-        self, head_mask: Optional[Tensor], num_hidden_layers: int, is_attention_chunked: bool = False
+        self,
+        head_mask: Optional[Tensor],
+        num_hidden_layers: int,
+        is_attention_chunked: bool = False,
     ) -> Tensor:
     ) -> Tensor:
         """
         """
         Prepare the head mask if needed.
         Prepare the head mask if needed.
@@ -309,9 +343,13 @@ class ModuleUtilsMixin:
             head_mask = head_mask.unsqueeze(0).unsqueeze(0).unsqueeze(-1).unsqueeze(-1)
             head_mask = head_mask.unsqueeze(0).unsqueeze(0).unsqueeze(-1).unsqueeze(-1)
             head_mask = head_mask.expand(num_hidden_layers, -1, -1, -1, -1)
             head_mask = head_mask.expand(num_hidden_layers, -1, -1, -1, -1)
         elif head_mask.dim() == 2:
         elif head_mask.dim() == 2:
-            head_mask = head_mask.unsqueeze(1).unsqueeze(-1).unsqueeze(-1)  # We can specify head_mask for each layer
+            head_mask = (
+                head_mask.unsqueeze(1).unsqueeze(-1).unsqueeze(-1)
+            )  # We can specify head_mask for each layer
         assert head_mask.dim() == 5, f"head_mask.dim != 5, instead {head_mask.dim()}"
         assert head_mask.dim() == 5, f"head_mask.dim != 5, instead {head_mask.dim()}"
-        head_mask = head_mask.to(dtype=self.dtype)  # switch to fload if need + fp16 compatibility
+        head_mask = head_mask.to(
+            dtype=self.dtype
+        )  # switch to fload if need + fp16 compatibility
         return head_mask
         return head_mask
 
 
 
 
@@ -420,12 +458,18 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
             self._tie_or_clone_weights(output_embeddings, self.get_input_embeddings())
             self._tie_or_clone_weights(output_embeddings, self.get_input_embeddings())
 
 
         if self.config.is_encoder_decoder and self.config.tie_encoder_decoder:
         if self.config.is_encoder_decoder and self.config.tie_encoder_decoder:
-            self._tie_encoder_decoder_weights(self.encoder, self.decoder, self.base_model_prefix)
+            self._tie_encoder_decoder_weights(
+                self.encoder, self.decoder, self.base_model_prefix
+            )
 
 
     @staticmethod
     @staticmethod
-    def _tie_encoder_decoder_weights(encoder: nn.Module, decoder: nn.Module, base_model_prefix: str):
+    def _tie_encoder_decoder_weights(
+        encoder: nn.Module, decoder: nn.Module, base_model_prefix: str
+    ):
         uninitialized_encoder_weights: List[str] = []
         uninitialized_encoder_weights: List[str] = []
-        assert decoder.__class__ == encoder.__class__, f"{decoder.__class__} and {encoder.__class__} have to be equal."
+        assert (
+            decoder.__class__ == encoder.__class__
+        ), f"{decoder.__class__} and {encoder.__class__} have to be equal."
 
 
         def tie_encoder_to_decoder_recursively(
         def tie_encoder_to_decoder_recursively(
             decoder_pointer: nn.Module,
             decoder_pointer: nn.Module,
@@ -452,13 +496,21 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
                     len(encoder_modules) > 0
                     len(encoder_modules) > 0
                 ), f"Encoder module {encoder_pointer} does not match decoder module {decoder_pointer}"
                 ), f"Encoder module {encoder_pointer} does not match decoder module {decoder_pointer}"
 
 
-                all_encoder_weights = set([module_name + "/" + sub_name for sub_name in encoder_modules.keys()])
+                all_encoder_weights = set(
+                    [
+                        module_name + "/" + sub_name
+                        for sub_name in encoder_modules.keys()
+                    ]
+                )
                 encoder_layer_pos = 0
                 encoder_layer_pos = 0
                 for name, module in decoder_modules.items():
                 for name, module in decoder_modules.items():
                     if name.isdigit():
                     if name.isdigit():
                         encoder_name = str(int(name) + encoder_layer_pos)
                         encoder_name = str(int(name) + encoder_layer_pos)
                         decoder_name = name
                         decoder_name = name
-                        if not isinstance(decoder_modules[decoder_name], type(encoder_modules[encoder_name])):
+                        if not isinstance(
+                            decoder_modules[decoder_name],
+                            type(encoder_modules[encoder_name]),
+                        ):
                             # this can happen if the name corresponds to the position in a list module list of layers
                             # this can happen if the name corresponds to the position in a list module list of layers
                             # in this case the decoder has added a cross-attention that the encoder does not have
                             # in this case the decoder has added a cross-attention that the encoder does not have
                             # thus skip this step and substract one layer pos from encoder
                             # thus skip this step and substract one layer pos from encoder
@@ -484,7 +536,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
                 uninitialized_encoder_weights += list(all_encoder_weights)
                 uninitialized_encoder_weights += list(all_encoder_weights)
 
 
         # tie weights recursively
         # tie weights recursively
-        tie_encoder_to_decoder_recursively(decoder, encoder, base_model_prefix, uninitialized_encoder_weights)
+        tie_encoder_to_decoder_recursively(
+            decoder, encoder, base_model_prefix, uninitialized_encoder_weights
+        )
         if len(uninitialized_encoder_weights) > 0:
         if len(uninitialized_encoder_weights) > 0:
             logger.warning(
             logger.warning(
                 f"The following encoder weights were not tied to the decoder {uninitialized_encoder_weights}"
                 f"The following encoder weights were not tied to the decoder {uninitialized_encoder_weights}"
@@ -507,10 +561,14 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
                 "constant",
                 "constant",
                 0,
                 0,
             )
             )
-        if hasattr(output_embeddings, "out_features") and hasattr(input_embeddings, "num_embeddings"):
+        if hasattr(output_embeddings, "out_features") and hasattr(
+            input_embeddings, "num_embeddings"
+        ):
             output_embeddings.out_features = input_embeddings.num_embeddings
             output_embeddings.out_features = input_embeddings.num_embeddings
 
 
-    def resize_token_embeddings(self, new_num_tokens: Optional[int] = None) -> torch.nn.Embedding:
+    def resize_token_embeddings(
+        self, new_num_tokens: Optional[int] = None
+    ) -> torch.nn.Embedding:
         """
         """
         Resizes input token embeddings matrix of the model if :obj:`new_num_tokens != config.vocab_size`.
         Resizes input token embeddings matrix of the model if :obj:`new_num_tokens != config.vocab_size`.
 
 
@@ -526,7 +584,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
         Return:
         Return:
             :obj:`torch.nn.Embedding`: Pointer to the input tokens Embeddings Module of the model.
             :obj:`torch.nn.Embedding`: Pointer to the input tokens Embeddings Module of the model.
         """
         """
-        base_model = getattr(self, self.base_model_prefix, self)  # get the base model if needed
+        base_model = getattr(
+            self, self.base_model_prefix, self
+        )  # get the base model if needed
         model_embeds = base_model._resize_token_embeddings(new_num_tokens)
         model_embeds = base_model._resize_token_embeddings(new_num_tokens)
         if new_num_tokens is None:
         if new_num_tokens is None:
             return model_embeds
             return model_embeds
@@ -583,7 +643,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
 
 
         # Copy token embeddings from the previous weights
         # Copy token embeddings from the previous weights
         num_tokens_to_copy = min(old_num_tokens, new_num_tokens)
         num_tokens_to_copy = min(old_num_tokens, new_num_tokens)
-        new_embeddings.weight.data[:num_tokens_to_copy, :] = old_embeddings.weight.data[:num_tokens_to_copy, :]
+        new_embeddings.weight.data[:num_tokens_to_copy, :] = old_embeddings.weight.data[
+            :num_tokens_to_copy, :
+        ]
 
 
         return new_embeddings
         return new_embeddings
 
 
@@ -614,7 +676,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
         # save new sets of pruned heads as union of previously stored pruned heads and newly pruned heads
         # save new sets of pruned heads as union of previously stored pruned heads and newly pruned heads
         for layer, heads in heads_to_prune.items():
         for layer, heads in heads_to_prune.items():
             union_heads = set(self.config.pruned_heads.get(layer, [])) | set(heads)
             union_heads = set(self.config.pruned_heads.get(layer, [])) | set(heads)
-            self.config.pruned_heads[layer] = list(union_heads)  # Unfortunately we have to store it as list for JSON
+            self.config.pruned_heads[layer] = list(
+                union_heads
+            )  # Unfortunately we have to store it as list for JSON
 
 
         self.base_model._prune_heads(heads_to_prune)
         self.base_model._prune_heads(heads_to_prune)
 
 
@@ -628,7 +692,11 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
                 Directory to which to save. Will be created if it doesn't exist.
                 Directory to which to save. Will be created if it doesn't exist.
         """
         """
         if os.path.isfile(save_directory):
         if os.path.isfile(save_directory):
-            logger.error("Provided path ({}) should be a directory, not a file".format(save_directory))
+            logger.error(
+                "Provided path ({}) should be a directory, not a file".format(
+                    save_directory
+                )
+            )
             return
             return
         os.makedirs(save_directory, exist_ok=True)
         os.makedirs(save_directory, exist_ok=True)
 
 
@@ -775,7 +843,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
 
 
         # Load config if we don't provide a configuration
         # Load config if we don't provide a configuration
         if not isinstance(config, PretrainedConfig):
         if not isinstance(config, PretrainedConfig):
-            config_path = config if config is not None else pretrained_model_name_or_path
+            config_path = (
+                config if config is not None else pretrained_model_name_or_path
+            )
             config, model_kwargs = cls.config_class.from_pretrained(
             config, model_kwargs = cls.config_class.from_pretrained(
                 config_path,
                 config_path,
                 *model_args,
                 *model_args,
@@ -793,23 +863,43 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
         # Load model
         # Load model
         if pretrained_model_name_or_path is not None:
         if pretrained_model_name_or_path is not None:
             if os.path.isdir(pretrained_model_name_or_path):
             if os.path.isdir(pretrained_model_name_or_path):
-                if from_tf and os.path.isfile(os.path.join(pretrained_model_name_or_path, TF_WEIGHTS_NAME + ".index")):
+                if from_tf and os.path.isfile(
+                    os.path.join(
+                        pretrained_model_name_or_path, TF_WEIGHTS_NAME + ".index"
+                    )
+                ):
                     # Load from a TF 1.0 checkpoint
                     # Load from a TF 1.0 checkpoint
-                    archive_file = os.path.join(pretrained_model_name_or_path, TF_WEIGHTS_NAME + ".index")
-                elif from_tf and os.path.isfile(os.path.join(pretrained_model_name_or_path, TF2_WEIGHTS_NAME)):
+                    archive_file = os.path.join(
+                        pretrained_model_name_or_path, TF_WEIGHTS_NAME + ".index"
+                    )
+                elif from_tf and os.path.isfile(
+                    os.path.join(pretrained_model_name_or_path, TF2_WEIGHTS_NAME)
+                ):
                     # Load from a TF 2.0 checkpoint
                     # Load from a TF 2.0 checkpoint
-                    archive_file = os.path.join(pretrained_model_name_or_path, TF2_WEIGHTS_NAME)
-                elif os.path.isfile(os.path.join(pretrained_model_name_or_path, WEIGHTS_NAME)):
+                    archive_file = os.path.join(
+                        pretrained_model_name_or_path, TF2_WEIGHTS_NAME
+                    )
+                elif os.path.isfile(
+                    os.path.join(pretrained_model_name_or_path, WEIGHTS_NAME)
+                ):
                     # Load from a PyTorch checkpoint
                     # Load from a PyTorch checkpoint
-                    archive_file = os.path.join(pretrained_model_name_or_path, WEIGHTS_NAME)
+                    archive_file = os.path.join(
+                        pretrained_model_name_or_path, WEIGHTS_NAME
+                    )
                 else:
                 else:
                     raise EnvironmentError(
                     raise EnvironmentError(
                         "Error no file named {} found in directory {} or `from_tf` set to False".format(
                         "Error no file named {} found in directory {} or `from_tf` set to False".format(
-                            [WEIGHTS_NAME, TF2_WEIGHTS_NAME, TF_WEIGHTS_NAME + ".index"],
+                            [
+                                WEIGHTS_NAME,
+                                TF2_WEIGHTS_NAME,
+                                TF_WEIGHTS_NAME + ".index",
+                            ],
                             pretrained_model_name_or_path,
                             pretrained_model_name_or_path,
                         )
                         )
                     )
                     )
-            elif os.path.isfile(pretrained_model_name_or_path) or is_remote_url(pretrained_model_name_or_path):
+            elif os.path.isfile(pretrained_model_name_or_path) or is_remote_url(
+                pretrained_model_name_or_path
+            ):
                 archive_file = pretrained_model_name_or_path
                 archive_file = pretrained_model_name_or_path
             elif os.path.isfile(pretrained_model_name_or_path + ".index"):
             elif os.path.isfile(pretrained_model_name_or_path + ".index"):
                 assert (
                 assert (
@@ -848,7 +938,11 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
             if resolved_archive_file == archive_file:
             if resolved_archive_file == archive_file:
                 logger.info("loading weights file {}".format(archive_file))
                 logger.info("loading weights file {}".format(archive_file))
             else:
             else:
-                logger.info("loading weights file {} from cache at {}".format(archive_file, resolved_archive_file))
+                logger.info(
+                    "loading weights file {} from cache at {}".format(
+                        archive_file, resolved_archive_file
+                    )
+                )
         else:
         else:
             resolved_archive_file = None
             resolved_archive_file = None
 
 
@@ -871,13 +965,17 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
         if from_tf:
         if from_tf:
             if resolved_archive_file.endswith(".index"):
             if resolved_archive_file.endswith(".index"):
                 # Load from a TensorFlow 1.X checkpoint - provided by original authors
                 # Load from a TensorFlow 1.X checkpoint - provided by original authors
-                model = cls.load_tf_weights(model, config, resolved_archive_file[:-6])  # Remove the '.index'
+                model = cls.load_tf_weights(
+                    model, config, resolved_archive_file[:-6]
+                )  # Remove the '.index'
             else:
             else:
                 # Load from our TensorFlow 2.0 checkpoints
                 # Load from our TensorFlow 2.0 checkpoints
                 try:
                 try:
                     from transformers import load_tf2_checkpoint_in_pytorch_model
                     from transformers import load_tf2_checkpoint_in_pytorch_model
 
 
-                    model = load_tf2_checkpoint_in_pytorch_model(model, resolved_archive_file, allow_missing_keys=True)
+                    model = load_tf2_checkpoint_in_pytorch_model(
+                        model, resolved_archive_file, allow_missing_keys=True
+                    )
                 except ImportError:
                 except ImportError:
                     logger.error(
                     logger.error(
                         "Loading a TensorFlow model in PyTorch, requires both PyTorch and TensorFlow to be installed. Please see "
                         "Loading a TensorFlow model in PyTorch, requires both PyTorch and TensorFlow to be installed. Please see "
@@ -909,7 +1007,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
             # PyTorch's `_load_from_state_dict` does not copy parameters in a module's descendants
             # PyTorch's `_load_from_state_dict` does not copy parameters in a module's descendants
             # so we need to apply the function recursively.
             # so we need to apply the function recursively.
             def load(module: nn.Module, prefix=""):
             def load(module: nn.Module, prefix=""):
-                local_metadata = {} if metadata is None else metadata.get(prefix[:-1], {})
+                local_metadata = (
+                    {} if metadata is None else metadata.get(prefix[:-1], {})
+                )
                 module._load_from_state_dict(
                 module._load_from_state_dict(
                     state_dict,
                     state_dict,
                     prefix,
                     prefix,
@@ -926,7 +1026,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
             # Make sure we are able to load base models as well as derived models (with heads)
             # Make sure we are able to load base models as well as derived models (with heads)
             start_prefix = ""
             start_prefix = ""
             model_to_load = model
             model_to_load = model
-            has_prefix_module = any(s.startswith(cls.base_model_prefix) for s in state_dict.keys())
+            has_prefix_module = any(
+                s.startswith(cls.base_model_prefix) for s in state_dict.keys()
+            )
             if not hasattr(model, cls.base_model_prefix) and has_prefix_module:
             if not hasattr(model, cls.base_model_prefix) and has_prefix_module:
                 start_prefix = cls.base_model_prefix + "."
                 start_prefix = cls.base_model_prefix + "."
             if hasattr(model, cls.base_model_prefix) and not has_prefix_module:
             if hasattr(model, cls.base_model_prefix) and not has_prefix_module:
@@ -937,15 +1039,20 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
             if model.__class__.__name__ != model_to_load.__class__.__name__:
             if model.__class__.__name__ != model_to_load.__class__.__name__:
                 base_model_state_dict = model_to_load.state_dict().keys()
                 base_model_state_dict = model_to_load.state_dict().keys()
                 head_model_state_dict_without_base_prefix = [
                 head_model_state_dict_without_base_prefix = [
-                    key.split(cls.base_model_prefix + ".")[-1] for key in model.state_dict().keys()
+                    key.split(cls.base_model_prefix + ".")[-1]
+                    for key in model.state_dict().keys()
                 ]
                 ]
-                missing_keys.extend(head_model_state_dict_without_base_prefix - base_model_state_dict)
+                missing_keys.extend(
+                    head_model_state_dict_without_base_prefix - base_model_state_dict
+                )
 
 
             # Some models may have keys that are not in the state by design, removing them before needlessly warning
             # Some models may have keys that are not in the state by design, removing them before needlessly warning
             # the user.
             # the user.
             if cls.authorized_missing_keys is not None:
             if cls.authorized_missing_keys is not None:
                 for pat in cls.authorized_missing_keys:
                 for pat in cls.authorized_missing_keys:
-                    missing_keys = [k for k in missing_keys if re.search(pat, k) is None]
+                    missing_keys = [
+                        k for k in missing_keys if re.search(pat, k) is None
+                    ]
 
 
             if len(unexpected_keys) > 0:
             if len(unexpected_keys) > 0:
                 logger.warning(
                 logger.warning(
@@ -957,7 +1064,9 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
                     f"to be exactly identical (initializing a BertForSequenceClassification model from a BertForSequenceClassification model)."
                     f"to be exactly identical (initializing a BertForSequenceClassification model from a BertForSequenceClassification model)."
                 )
                 )
             else:
             else:
-                logger.info(f"All model checkpoint weights were used when initializing {model.__class__.__name__}.\n")
+                logger.info(
+                    f"All model checkpoint weights were used when initializing {model.__class__.__name__}.\n"
+                )
             if len(missing_keys) > 0:
             if len(missing_keys) > 0:
                 logger.warning(
                 logger.warning(
                     f"Some weights of {model.__class__.__name__} were not initialized from the model checkpoint at {pretrained_model_name_or_path} "
                     f"Some weights of {model.__class__.__name__} were not initialized from the model checkpoint at {pretrained_model_name_or_path} "
@@ -990,7 +1099,11 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin):
             }
             }
             return model, loading_info
             return model, loading_info
 
 
-        if hasattr(config, "xla_device") and config.xla_device and is_torch_tpu_available():
+        if (
+            hasattr(config, "xla_device")
+            and config.xla_device
+            and is_torch_tpu_available()
+        ):
             import torch_xla.core.xla_model as xm
             import torch_xla.core.xla_model as xm
 
 
             model = xm.send_cpu_data_to_device(model, xm.xla_device())
             model = xm.send_cpu_data_to_device(model, xm.xla_device())
@@ -1039,7 +1152,9 @@ class PoolerStartLogits(nn.Module):
         self.dense = nn.Linear(config.hidden_size, 1)
         self.dense = nn.Linear(config.hidden_size, 1)
 
 
     def forward(
     def forward(
-        self, hidden_states: torch.FloatTensor, p_mask: Optional[torch.FloatTensor] = None
+        self,
+        hidden_states: torch.FloatTensor,
+        p_mask: Optional[torch.FloatTensor] = None,
     ) -> torch.FloatTensor:
     ) -> torch.FloatTensor:
         """
         """
         Args:
         Args:
@@ -1112,8 +1227,12 @@ class PoolerEndLogits(nn.Module):
         ), "One of start_states, start_positions should be not None"
         ), "One of start_states, start_positions should be not None"
         if start_positions is not None:
         if start_positions is not None:
             slen, hsz = hidden_states.shape[-2:]
             slen, hsz = hidden_states.shape[-2:]
-            start_positions = start_positions[:, None, None].expand(-1, -1, hsz)  # shape (bsz, 1, hsz)
-            start_states = hidden_states.gather(-2, start_positions)  # shape (bsz, 1, hsz)
+            start_positions = start_positions[:, None, None].expand(
+                -1, -1, hsz
+            )  # shape (bsz, 1, hsz)
+            start_states = hidden_states.gather(
+                -2, start_positions
+            )  # shape (bsz, 1, hsz)
             start_states = start_states.expand(-1, slen, -1)  # shape (bsz, slen, hsz)
             start_states = start_states.expand(-1, slen, -1)  # shape (bsz, slen, hsz)
 
 
         x = self.dense_0(torch.cat([hidden_states, start_states], dim=-1))
         x = self.dense_0(torch.cat([hidden_states, start_states], dim=-1))
@@ -1177,12 +1296,20 @@ class PoolerAnswerClass(nn.Module):
             start_states is not None or start_positions is not None
             start_states is not None or start_positions is not None
         ), "One of start_states, start_positions should be not None"
         ), "One of start_states, start_positions should be not None"
         if start_positions is not None:
         if start_positions is not None:
-            start_positions = start_positions[:, None, None].expand(-1, -1, hsz)  # shape (bsz, 1, hsz)
-            start_states = hidden_states.gather(-2, start_positions).squeeze(-2)  # shape (bsz, hsz)
+            start_positions = start_positions[:, None, None].expand(
+                -1, -1, hsz
+            )  # shape (bsz, 1, hsz)
+            start_states = hidden_states.gather(-2, start_positions).squeeze(
+                -2
+            )  # shape (bsz, hsz)
 
 
         if cls_index is not None:
         if cls_index is not None:
-            cls_index = cls_index[:, None, None].expand(-1, -1, hsz)  # shape (bsz, 1, hsz)
-            cls_token_state = hidden_states.gather(-2, cls_index).squeeze(-2)  # shape (bsz, hsz)
+            cls_index = cls_index[:, None, None].expand(
+                -1, -1, hsz
+            )  # shape (bsz, 1, hsz)
+            cls_token_state = hidden_states.gather(-2, cls_index).squeeze(
+                -2
+            )  # shape (bsz, hsz)
         else:
         else:
             cls_token_state = hidden_states[:, -1, :]  # shape (bsz, hsz)
             cls_token_state = hidden_states[:, -1, :]  # shape (bsz, hsz)
 
 
@@ -1241,7 +1368,9 @@ class SQuADHead(nn.Module):
         self.end_logits = PoolerEndLogits(config)
         self.end_logits = PoolerEndLogits(config)
         self.answer_class = PoolerAnswerClass(config)
         self.answer_class = PoolerAnswerClass(config)
 
 
-    @replace_return_docstrings(output_type=SquadHeadOutput, config_class=PretrainedConfig)
+    @replace_return_docstrings(
+        output_type=SquadHeadOutput, config_class=PretrainedConfig
+    )
     def forward(
     def forward(
         self,
         self,
         hidden_states: torch.FloatTensor,
         hidden_states: torch.FloatTensor,
@@ -1281,7 +1410,9 @@ class SQuADHead(nn.Module):
                     x.squeeze_(-1)
                     x.squeeze_(-1)
 
 
             # during training, compute the end logits based on the ground truth of the start position
             # during training, compute the end logits based on the ground truth of the start position
-            end_logits = self.end_logits(hidden_states, start_positions=start_positions, p_mask=p_mask)
+            end_logits = self.end_logits(
+                hidden_states, start_positions=start_positions, p_mask=p_mask
+            )
 
 
             loss_fct = CrossEntropyLoss()
             loss_fct = CrossEntropyLoss()
             start_loss = loss_fct(start_logits, start_positions)
             start_loss = loss_fct(start_logits, start_positions)
@@ -1290,7 +1421,9 @@ class SQuADHead(nn.Module):
 
 
             if cls_index is not None and is_impossible is not None:
             if cls_index is not None and is_impossible is not None:
                 # Predict answerability from the representation of CLS and START
                 # Predict answerability from the representation of CLS and START
-                cls_logits = self.answer_class(hidden_states, start_positions=start_positions, cls_index=cls_index)
+                cls_logits = self.answer_class(
+                    hidden_states, start_positions=start_positions, cls_index=cls_index
+                )
                 loss_fct_cls = nn.BCEWithLogitsLoss()
                 loss_fct_cls = nn.BCEWithLogitsLoss()
                 cls_loss = loss_fct_cls(cls_logits, is_impossible)
                 cls_loss = loss_fct_cls(cls_logits, is_impossible)
 
 
@@ -1307,28 +1440,48 @@ class SQuADHead(nn.Module):
             start_top_log_probs, start_top_index = torch.topk(
             start_top_log_probs, start_top_index = torch.topk(
                 start_log_probs, self.start_n_top, dim=-1
                 start_log_probs, self.start_n_top, dim=-1
             )  # shape (bsz, start_n_top)
             )  # shape (bsz, start_n_top)
-            start_top_index_exp = start_top_index.unsqueeze(-1).expand(-1, -1, hsz)  # shape (bsz, start_n_top, hsz)
-            start_states = torch.gather(hidden_states, -2, start_top_index_exp)  # shape (bsz, start_n_top, hsz)
-            start_states = start_states.unsqueeze(1).expand(-1, slen, -1, -1)  # shape (bsz, slen, start_n_top, hsz)
+            start_top_index_exp = start_top_index.unsqueeze(-1).expand(
+                -1, -1, hsz
+            )  # shape (bsz, start_n_top, hsz)
+            start_states = torch.gather(
+                hidden_states, -2, start_top_index_exp
+            )  # shape (bsz, start_n_top, hsz)
+            start_states = start_states.unsqueeze(1).expand(
+                -1, slen, -1, -1
+            )  # shape (bsz, slen, start_n_top, hsz)
 
 
             hidden_states_expanded = hidden_states.unsqueeze(2).expand_as(
             hidden_states_expanded = hidden_states.unsqueeze(2).expand_as(
                 start_states
                 start_states
             )  # shape (bsz, slen, start_n_top, hsz)
             )  # shape (bsz, slen, start_n_top, hsz)
             p_mask = p_mask.unsqueeze(-1) if p_mask is not None else None
             p_mask = p_mask.unsqueeze(-1) if p_mask is not None else None
-            end_logits = self.end_logits(hidden_states_expanded, start_states=start_states, p_mask=p_mask)
-            end_log_probs = F.softmax(end_logits, dim=1)  # shape (bsz, slen, start_n_top)
+            end_logits = self.end_logits(
+                hidden_states_expanded, start_states=start_states, p_mask=p_mask
+            )
+            end_log_probs = F.softmax(
+                end_logits, dim=1
+            )  # shape (bsz, slen, start_n_top)
 
 
             end_top_log_probs, end_top_index = torch.topk(
             end_top_log_probs, end_top_index = torch.topk(
                 end_log_probs, self.end_n_top, dim=1
                 end_log_probs, self.end_n_top, dim=1
             )  # shape (bsz, end_n_top, start_n_top)
             )  # shape (bsz, end_n_top, start_n_top)
-            end_top_log_probs = end_top_log_probs.view(-1, self.start_n_top * self.end_n_top)
+            end_top_log_probs = end_top_log_probs.view(
+                -1, self.start_n_top * self.end_n_top
+            )
             end_top_index = end_top_index.view(-1, self.start_n_top * self.end_n_top)
             end_top_index = end_top_index.view(-1, self.start_n_top * self.end_n_top)
 
 
             start_states = torch.einsum("blh,bl->bh", hidden_states, start_log_probs)
             start_states = torch.einsum("blh,bl->bh", hidden_states, start_log_probs)
-            cls_logits = self.answer_class(hidden_states, start_states=start_states, cls_index=cls_index)
+            cls_logits = self.answer_class(
+                hidden_states, start_states=start_states, cls_index=cls_index
+            )
 
 
             if not return_dict:
             if not return_dict:
-                return (start_top_log_probs, start_top_index, end_top_log_probs, end_top_index, cls_logits)
+                return (
+                    start_top_log_probs,
+                    start_top_index,
+                    end_top_log_probs,
+                    end_top_index,
+                    cls_logits,
+                )
             else:
             else:
                 return SquadHeadOutput(
                 return SquadHeadOutput(
                     start_top_log_probs=start_top_log_probs,
                     start_top_log_probs=start_top_log_probs,
@@ -1379,17 +1532,26 @@ class SequenceSummary(nn.Module):
 
 
         self.summary = Identity()
         self.summary = Identity()
         if hasattr(config, "summary_use_proj") and config.summary_use_proj:
         if hasattr(config, "summary_use_proj") and config.summary_use_proj:
-            if hasattr(config, "summary_proj_to_labels") and config.summary_proj_to_labels and config.num_labels > 0:
+            if (
+                hasattr(config, "summary_proj_to_labels")
+                and config.summary_proj_to_labels
+                and config.num_labels > 0
+            ):
                 num_classes = config.num_labels
                 num_classes = config.num_labels
             else:
             else:
                 num_classes = config.hidden_size
                 num_classes = config.hidden_size
             self.summary = nn.Linear(config.hidden_size, num_classes)
             self.summary = nn.Linear(config.hidden_size, num_classes)
 
 
         activation_string = getattr(config, "summary_activation", None)
         activation_string = getattr(config, "summary_activation", None)
-        self.activation: Callable = get_activation(activation_string) if activation_string else Identity()
+        self.activation: Callable = get_activation(
+            activation_string
+        ) if activation_string else Identity()
 
 
         self.first_dropout = Identity()
         self.first_dropout = Identity()
-        if hasattr(config, "summary_first_dropout") and config.summary_first_dropout > 0:
+        if (
+            hasattr(config, "summary_first_dropout")
+            and config.summary_first_dropout > 0
+        ):
             self.first_dropout = nn.Dropout(config.summary_first_dropout)
             self.first_dropout = nn.Dropout(config.summary_first_dropout)
 
 
         self.last_dropout = Identity()
         self.last_dropout = Identity()
@@ -1397,7 +1559,9 @@ class SequenceSummary(nn.Module):
             self.last_dropout = nn.Dropout(config.summary_last_dropout)
             self.last_dropout = nn.Dropout(config.summary_last_dropout)
 
 
     def forward(
     def forward(
-        self, hidden_states: torch.FloatTensor, cls_index: Optional[torch.LongTensor] = None
+        self,
+        hidden_states: torch.FloatTensor,
+        cls_index: Optional[torch.LongTensor] = None,
     ) -> torch.FloatTensor:
     ) -> torch.FloatTensor:
         """
         """
         Compute a single vector summary of a sequence hidden states.
         Compute a single vector summary of a sequence hidden states.
@@ -1427,9 +1591,13 @@ class SequenceSummary(nn.Module):
                 )
                 )
             else:
             else:
                 cls_index = cls_index.unsqueeze(-1).unsqueeze(-1)
                 cls_index = cls_index.unsqueeze(-1).unsqueeze(-1)
-                cls_index = cls_index.expand((-1,) * (cls_index.dim() - 1) + (hidden_states.size(-1),))
+                cls_index = cls_index.expand(
+                    (-1,) * (cls_index.dim() - 1) + (hidden_states.size(-1),)
+                )
             # shape of cls_index: (bsz, XX, 1, hidden_size) where XX are optional leading dim of hidden_states
             # shape of cls_index: (bsz, XX, 1, hidden_size) where XX are optional leading dim of hidden_states
-            output = hidden_states.gather(-2, cls_index).squeeze(-2)  # shape (bsz, XX, hidden_size)
+            output = hidden_states.gather(-2, cls_index).squeeze(
+                -2
+            )  # shape (bsz, XX, hidden_size)
         elif self.summary_type == "attn":
         elif self.summary_type == "attn":
             raise NotImplementedError
             raise NotImplementedError
 
 
@@ -1441,7 +1609,9 @@ class SequenceSummary(nn.Module):
         return output
         return output
 
 
 
 
-def prune_linear_layer(layer: torch.nn.Linear, index: torch.LongTensor, dim: int = 0) -> torch.nn.Linear:
+def prune_linear_layer(
+    layer: torch.nn.Linear, index: torch.LongTensor, dim: int = 0
+) -> torch.nn.Linear:
     """
     """
     Prune a linear layer to keep only entries in index.
     Prune a linear layer to keep only entries in index.
 
 
@@ -1464,7 +1634,9 @@ def prune_linear_layer(layer: torch.nn.Linear, index: torch.LongTensor, dim: int
             b = layer.bias[index].clone().detach()
             b = layer.bias[index].clone().detach()
     new_size = list(layer.weight.size())
     new_size = list(layer.weight.size())
     new_size[dim] = len(index)
     new_size[dim] = len(index)
-    new_layer = nn.Linear(new_size[1], new_size[0], bias=layer.bias is not None).to(layer.weight.device)
+    new_layer = nn.Linear(new_size[1], new_size[0], bias=layer.bias is not None).to(
+        layer.weight.device
+    )
     new_layer.weight.requires_grad = False
     new_layer.weight.requires_grad = False
     new_layer.weight.copy_(W.contiguous())
     new_layer.weight.copy_(W.contiguous())
     new_layer.weight.requires_grad = True
     new_layer.weight.requires_grad = True
@@ -1509,7 +1681,9 @@ def prune_conv1d_layer(layer: Conv1D, index: torch.LongTensor, dim: int = 1) ->
 
 
 
 
 def prune_layer(
 def prune_layer(
-    layer: Union[torch.nn.Linear, Conv1D], index: torch.LongTensor, dim: Optional[int] = None
+    layer: Union[torch.nn.Linear, Conv1D],
+    index: torch.LongTensor,
+    dim: Optional[int] = None,
 ) -> Union[torch.nn.Linear, Conv1D]:
 ) -> Union[torch.nn.Linear, Conv1D]:
     """
     """
     Prune a Conv1D or linear layer to keep only entries in index.
     Prune a Conv1D or linear layer to keep only entries in index.
@@ -1534,7 +1708,10 @@ def prune_layer(
 
 
 
 
 def apply_chunking_to_forward(
 def apply_chunking_to_forward(
-    forward_fn: Callable[..., torch.Tensor], chunk_size: int, chunk_dim: int, *input_tensors
+    forward_fn: Callable[..., torch.Tensor],
+    chunk_size: int,
+    chunk_dim: int,
+    *input_tensors,
 ) -> torch.Tensor:
 ) -> torch.Tensor:
     """
     """
     This function chunks the :obj:`input_tensors` into smaller input tensor parts of size :obj:`chunk_size` over the
     This function chunks the :obj:`input_tensors` into smaller input tensor parts of size :obj:`chunk_size` over the
@@ -1568,7 +1745,9 @@ def apply_chunking_to_forward(
             return apply_chunking_to_forward(self.forward_chunk, self.chunk_size_lm_head, self.seq_len_dim, hidden_states)
             return apply_chunking_to_forward(self.forward_chunk, self.chunk_size_lm_head, self.seq_len_dim, hidden_states)
     """
     """
 
 
-    assert len(input_tensors) > 0, "{} has to be a tuple/list of tensors".format(input_tensors)
+    assert len(input_tensors) > 0, "{} has to be a tuple/list of tensors".format(
+        input_tensors
+    )
     tensor_shape = input_tensors[0].shape
     tensor_shape = input_tensors[0].shape
     assert all(
     assert all(
         input_tensor.shape == tensor_shape for input_tensor in input_tensors
         input_tensor.shape == tensor_shape for input_tensor in input_tensors
@@ -1592,9 +1771,15 @@ def apply_chunking_to_forward(
         num_chunks = input_tensors[0].shape[chunk_dim] // chunk_size
         num_chunks = input_tensors[0].shape[chunk_dim] // chunk_size
 
 
         # chunk input tensor into tuples
         # chunk input tensor into tuples
-        input_tensors_chunks = tuple(input_tensor.chunk(num_chunks, dim=chunk_dim) for input_tensor in input_tensors)
+        input_tensors_chunks = tuple(
+            input_tensor.chunk(num_chunks, dim=chunk_dim)
+            for input_tensor in input_tensors
+        )
         # apply forward fn to every tuple
         # apply forward fn to every tuple
-        output_chunks = tuple(forward_fn(*input_tensors_chunk) for input_tensors_chunk in zip(*input_tensors_chunks))
+        output_chunks = tuple(
+            forward_fn(*input_tensors_chunk)
+            for input_tensors_chunk in zip(*input_tensors_chunks)
+        )
         # concatenate output at same dimension
         # concatenate output at same dimension
         return torch.cat(output_chunks, dim=chunk_dim)
         return torch.cat(output_chunks, dim=chunk_dim)
 
 

@@ -39,9 +39,13 @@ def label_smoothed_nll_loss(lprobs, target, epsilon, ignore_index=-100):
     return loss, nll_loss
     return loss, nll_loss
 
 
 
 
-def encode_line(tokenizer, line, max_length, pad_to_max_length=True, return_tensors="pt"):
+def encode_line(
+    tokenizer, line, max_length, pad_to_max_length=True, return_tensors="pt"
+):
     """Only used by LegacyDataset"""
     """Only used by LegacyDataset"""
-    extra_kw = {"add_prefix_space": True} if isinstance(tokenizer, BartTokenizer) else {}
+    extra_kw = (
+        {"add_prefix_space": True} if isinstance(tokenizer, BartTokenizer) else {}
+    )
     return tokenizer(
     return tokenizer(
         [line],
         [line],
         max_length=max_length,
         max_length=max_length,
@@ -63,9 +67,7 @@ def calculate_bleu(output_lns, refs_lns, **kwargs) -> dict:
 
 
 
 
 def trim_batch(
 def trim_batch(
-    input_ids,
-    pad_token_id,
-    attention_mask=None,
+    input_ids, pad_token_id, attention_mask=None,
 ):
 ):
     """Remove columns that are populated exclusively by pad_token_id"""
     """Remove columns that are populated exclusively by pad_token_id"""
     keep_column_mask = input_ids.ne(pad_token_id).any(dim=0)
     keep_column_mask = input_ids.ne(pad_token_id).any(dim=0)
@@ -125,7 +127,9 @@ class LegacySeq2SeqDataset(AbstractSeq2SeqDataset):
     def __getitem__(self, index) -> Dict[str, torch.Tensor]:
     def __getitem__(self, index) -> Dict[str, torch.Tensor]:
         """Call tokenizer on src and tgt_lines"""
         """Call tokenizer on src and tgt_lines"""
         index = index + 1  # linecache starts at 1
         index = index + 1  # linecache starts at 1
-        source_line = self.prefix + linecache.getline(str(self.src_file), index).rstrip("\n")
+        source_line = self.prefix + linecache.getline(str(self.src_file), index).rstrip(
+            "\n"
+        )
         tgt_line = linecache.getline(str(self.tgt_file), index).rstrip("\n")
         tgt_line = linecache.getline(str(self.tgt_file), index).rstrip("\n")
         assert source_line, f"empty source line for index {index}"
         assert source_line, f"empty source line for index {index}"
         assert tgt_line, f"empty tgt line for index {index}"
         assert tgt_line, f"empty tgt line for index {index}"
@@ -147,7 +151,9 @@ class LegacySeq2SeqDataset(AbstractSeq2SeqDataset):
         target_ids = torch.stack([x["labels"] for x in batch])
         target_ids = torch.stack([x["labels"] for x in batch])
         pad_token_id = self.pad_token_id
         pad_token_id = self.pad_token_id
         y = trim_batch(target_ids, pad_token_id)
         y = trim_batch(target_ids, pad_token_id)
-        source_ids, source_mask = trim_batch(input_ids, pad_token_id, attention_mask=masks)
+        source_ids, source_mask = trim_batch(
+            input_ids, pad_token_id, attention_mask=masks
+        )
         batch = {
         batch = {
             "input_ids": source_ids,
             "input_ids": source_ids,
             "attention_mask": source_mask,
             "attention_mask": source_mask,
@@ -161,7 +167,9 @@ class Seq2SeqDataset(AbstractSeq2SeqDataset):
 
 
     def __getitem__(self, index) -> Dict[str, str]:
     def __getitem__(self, index) -> Dict[str, str]:
         index = index + 1  # linecache starts at 1
         index = index + 1  # linecache starts at 1
-        source_line = self.prefix + linecache.getline(str(self.src_file), index).rstrip("\n")
+        source_line = self.prefix + linecache.getline(str(self.src_file), index).rstrip(
+            "\n"
+        )
         tgt_line = linecache.getline(str(self.tgt_file), index).rstrip("\n")
         tgt_line = linecache.getline(str(self.tgt_file), index).rstrip("\n")
         assert source_line, f"empty source line for index {index}"
         assert source_line, f"empty source line for index {index}"
         assert tgt_line, f"empty tgt line for index {index}"
         assert tgt_line, f"empty tgt line for index {index}"
@@ -201,12 +209,23 @@ class SortishSampler(Sampler):
         idxs = np.random.permutation(len(self.data))
         idxs = np.random.permutation(len(self.data))
         sz = self.bs * 50
         sz = self.bs * 50
         ck_idx = [idxs[i : i + sz] for i in range(0, len(idxs), sz)]
         ck_idx = [idxs[i : i + sz] for i in range(0, len(idxs), sz)]
-        sort_idx = np.concatenate([sorted(s, key=self.key, reverse=True) for s in ck_idx])
+        sort_idx = np.concatenate(
+            [sorted(s, key=self.key, reverse=True) for s in ck_idx]
+        )
         sz = self.bs
         sz = self.bs
         ck_idx = [sort_idx[i : i + sz] for i in range(0, len(sort_idx), sz)]
         ck_idx = [sort_idx[i : i + sz] for i in range(0, len(sort_idx), sz)]
-        max_ck = np.argmax([self.key(ck[0]) for ck in ck_idx])  # find the chunk with the largest key,
-        ck_idx[0], ck_idx[max_ck] = ck_idx[max_ck], ck_idx[0]  # then make sure it goes first.
-        sort_idx = np.concatenate(np.random.permutation(ck_idx[1:])) if len(ck_idx) > 1 else np.array([], dtype=np.int)
+        max_ck = np.argmax(
+            [self.key(ck[0]) for ck in ck_idx]
+        )  # find the chunk with the largest key,
+        ck_idx[0], ck_idx[max_ck] = (
+            ck_idx[max_ck],
+            ck_idx[0],
+        )  # then make sure it goes first.
+        sort_idx = (
+            np.concatenate(np.random.permutation(ck_idx[1:]))
+            if len(ck_idx) > 1
+            else np.array([], dtype=np.int)
+        )
         sort_idx = np.concatenate((ck_idx[0], sort_idx))
         sort_idx = np.concatenate((ck_idx[0], sort_idx))
         return iter(sort_idx)
         return iter(sort_idx)
 
 
@@ -269,7 +288,9 @@ def get_git_info():
 ROUGE_KEYS = ["rouge1", "rouge2", "rougeL"]
 ROUGE_KEYS = ["rouge1", "rouge2", "rougeL"]
 
 
 
 
-def calculate_rouge(output_lns: List[str], reference_lns: List[str], use_stemmer=True) -> Dict:
+def calculate_rouge(
+    output_lns: List[str], reference_lns: List[str], use_stemmer=True
+) -> Dict:
     scorer = rouge_scorer.RougeScorer(ROUGE_KEYS, use_stemmer=use_stemmer)
     scorer = rouge_scorer.RougeScorer(ROUGE_KEYS, use_stemmer=use_stemmer)
     aggregator = scoring.BootstrapAggregator()
     aggregator = scoring.BootstrapAggregator()
 
 
@@ -302,7 +323,9 @@ def assert_all_frozen(model):
     model_grads: List[bool] = list(grad_status(model))
     model_grads: List[bool] = list(grad_status(model))
     n_require_grad = sum(lmap(int, model_grads))
     n_require_grad = sum(lmap(int, model_grads))
     npars = len(model_grads)
     npars = len(model_grads)
-    assert not any(model_grads), f"{n_require_grad/npars:.1%} of {npars} weights require grad"
+    assert not any(
+        model_grads
+    ), f"{n_require_grad/npars:.1%} of {npars} weights require grad"
 
 
 
 
 def assert_not_all_frozen(model):
 def assert_not_all_frozen(model):