

import argparse
import logging
import os
import sys
import time

import tensorflow as tf
from datasets import load_dataset
from tqdm import tqdm

from transformers import AutoTokenizer, TFAutoModelForSequenceClassification
from transformers.utils import is_sagemaker_dp_enabled


if os.environ.get('''SDP_ENABLED''') or is_sagemaker_dp_enabled():
    lowerCamelCase_    =					True
    lowerCamelCase_    =					'''p3dn.24xlarge'''
    import smdistributed.dataparallel.tensorflow as sdp
else:
    lowerCamelCase_    =					False



def    UpperCamelCase(					lowercase_			,					lowercase_			,					lowercase_			,					lowercase_			,					lowercase_			,					lowercase_			,					lowercase_=None							)	->				List[Any]:





  '''simple docstring'''





  snake_case_       						=      tqdm(lowercase_							)
  for i, batch in enumerate(lowercase_							):
    with tf.GradientTape() as tape:
      snake_case_						,				snake_case_       						=      batch
      snake_case_       						=      model(lowercase_							)
      snake_case_       						=      loss(lowercase_			,					outputs.logits							)

    if SDP_ENABLED:
      snake_case_       						=      sdp.DistributedGradientTape(lowercase_			,					sparse_as_dense=lowercase_							)

    snake_case_       						=      tape.gradient(lowercase_			,					model.trainable_variables							)
    opt.apply_gradients(zip(lowercase_			,					model.trainable_variables							)							)

    pbar.set_description(f'''Loss: {loss_value:.4f}'''							)

    if SDP_ENABLED and i == 0:
      sdp.broadcast_variables(model.variables			,					root_rank=0							)
      sdp.broadcast_variables(opt.variables()			,					root_rank=0							)

    if max_steps and i >= max_steps:
      break

  snake_case_       						=      {"""loss""": loss_value.numpy()}
  return train_results



def    UpperCamelCase(					lowercase_			,					lowercase_			,					lowercase_							)	->				str:





  '''simple docstring'''





  snake_case_						,				snake_case_       						=      load_dataset("""imdb"""			,					split=["""train""", """test"""]							)

  # Preprocess train dataset
  snake_case_       						=      train_dataset.map(
      lambda lowercase_							: tokenizer(e["""text"""]			,					truncation=lowercase_			,					padding="""max_length"""							)			,					batched=lowercase_							)
  train_dataset.set_format(type="""tensorflow"""			,					columns=["""input_ids""", """attention_mask""", """label"""]							)

  snake_case_       						=      {
      x: train_dataset[x].to_tensor(default_value=0			,					shape=[None, tokenizer.model_max_length]							)
      for x in ["""input_ids""", """attention_mask"""]
  }
  snake_case_       						=      tf.data.Dataset.from_tensor_slices((train_features, train_dataset["""label"""])							)

  # Preprocess test dataset
  snake_case_       						=      test_dataset.map(
      lambda lowercase_							: tokenizer(e["""text"""]			,					truncation=lowercase_			,					padding="""max_length"""							)			,					batched=lowercase_							)
  test_dataset.set_format(type="""tensorflow"""			,					columns=["""input_ids""", """attention_mask""", """label"""]							)

  snake_case_       						=      {
      x: test_dataset[x].to_tensor(default_value=0			,					shape=[None, tokenizer.model_max_length]							)
      for x in ["""input_ids""", """attention_mask"""]
  }
  snake_case_       						=      tf.data.Dataset.from_tensor_slices((test_features, test_dataset["""label"""])							)

  if SDP_ENABLED:
    snake_case_       						=      tf_train_dataset.shard(sdp.size()			,					sdp.rank()							)
    snake_case_       						=      tf_test_dataset.shard(sdp.size()			,					sdp.rank()							)
  snake_case_       						=      tf_train_dataset.batch(lowercase_			,					drop_remainder=lowercase_							)
  snake_case_       						=      tf_test_dataset.batch(lowercase_			,					drop_remainder=lowercase_							)

  return tf_train_dataset, tf_test_dataset


if __name__ == "__main__":
    lowerCamelCase_    =					argparse.ArgumentParser()

    # Hyperparameters sent by the client are passed as command-line arguments to the script.
    parser.add_argument('''--epochs''', type=int, default=3)
    parser.add_argument('''--per_device_train_batch_size''', type=int, default=16)
    parser.add_argument('''--per_device_eval_batch_size''', type=int, default=8)
    parser.add_argument('''--model_name_or_path''', type=str)
    parser.add_argument('''--learning_rate''', type=str, default=5E-5)
    parser.add_argument('''--do_train''', type=bool, default=True)
    parser.add_argument('''--do_eval''', type=bool, default=True)
    parser.add_argument('''--output_dir''', type=str)
    parser.add_argument('''--max_steps''', type=int, default=None)

    # Data, model, and output directories
    parser.add_argument('''--output_data_dir''', type=str, default=os.environ['''SM_OUTPUT_DATA_DIR'''])
    parser.add_argument('''--model_dir''', type=str, default=os.environ['''SM_MODEL_DIR'''])
    parser.add_argument('''--n_gpus''', type=str, default=os.environ['''SM_NUM_GPUS'''])

    lowerCamelCase_   ,  lowerCamelCase_    =					parser.parse_known_args()

    # Set up logging
    lowerCamelCase_    =					logging.getLogger(__name__)

    logging.basicConfig(
        level=logging.getLevelName('''INFO'''),
        handlers=[logging.StreamHandler(sys.stdout)],
        format='''%(asctime)s - %(name)s - %(levelname)s - %(message)s''',
    )

    if SDP_ENABLED:
        sdp.init()

        lowerCamelCase_    =					tf.config.experimental.list_physical_devices('''GPU''')
        for gpu in gpus:
            tf.config.experimental.set_memory_growth(gpu, True)
        if gpus:
            tf.config.experimental.set_visible_devices(gpus[sdp.local_rank()], '''GPU''')

    # Load model and tokenizer
    lowerCamelCase_    =					TFAutoModelForSequenceClassification.from_pretrained(args.model_name_or_path)
    lowerCamelCase_    =					AutoTokenizer.from_pretrained(args.model_name_or_path)

    # get datasets
    lowerCamelCase_   ,  lowerCamelCase_    =					get_datasets(
        tokenizer=tokenizer,
        train_batch_size=args.per_device_train_batch_size,
        eval_batch_size=args.per_device_eval_batch_size,
    )

    # fine optimizer and loss
    lowerCamelCase_    =					tf.keras.optimizers.Adam(learning_rate=args.learning_rate)
    lowerCamelCase_    =					tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True)
    lowerCamelCase_    =					[tf.keras.metrics.SparseCategoricalAccuracy()]
    model.compile(optimizer=optimizer, loss=loss, metrics=metrics)

    # Training
    if args.do_train:
        # train_results = model.fit(tf_train_dataset, epochs=args.epochs, batch_size=args.train_batch_size)
        lowerCamelCase_    =					time.time()
        lowerCamelCase_    =					fit(
            model,
            loss,
            optimizer,
            tf_train_dataset,
            args.epochs,
            args.per_device_train_batch_size,
            max_steps=args.max_steps,
        )
        lowerCamelCase_    =					time.time() - start_train_time
        logger.info('''*** Train ***''')
        logger.info(f"""train_runtime = {end_train_time}""")

        lowerCamelCase_    =					os.path.join(args.output_dir, '''train_results.txt''')

        if not SDP_ENABLED or sdp.rank() == 0:
            with open(output_eval_file, '''w''') as writer:
                logger.info('''***** Train results *****''')
                logger.info(train_results)
                for key, value in train_results.items():
                    logger.info(f"""  {key} = {value}""")
                    writer.write(f"""{key} = {value}\n""")

    # Evaluation
    if args.do_eval and (not SDP_ENABLED or sdp.rank() == 0):
        lowerCamelCase_    =					model.evaluate(tf_test_dataset, batch_size=args.per_device_eval_batch_size, return_dict=True)
        logger.info('''*** Evaluate ***''')

        lowerCamelCase_    =					os.path.join(args.output_dir, '''eval_results.txt''')

        with open(output_eval_file, '''w''') as writer:
            logger.info('''***** Eval results *****''')
            logger.info(result)
            for key, value in result.items():
                logger.info(f"""  {key} = {value}""")
                writer.write(f"""{key} = {value}\n""")

    # Save result
    if SDP_ENABLED:
        if sdp.rank() == 0:
            model.save_pretrained(args.output_dir)
            tokenizer.save_pretrained(args.output_dir)
    else:
        model.save_pretrained(args.output_dir)
        tokenizer.save_pretrained(args.output_dir)







import csv
import dataclasses
import json
from dataclasses import dataclass
from typing import List, Optional, Union

from ...utils import is_tf_available, is_torch_available, logging


__snake_case			:			Union[str, Any]			   =   logging.get_logger(__name__)


@dataclass
class 			__SCREAMING_SNAKE_CASE    :
						_SCREAMING_SNAKE_CASE		:				str
						_SCREAMING_SNAKE_CASE		:				str
						_SCREAMING_SNAKE_CASE		:				Optional[str]            =    None
						_SCREAMING_SNAKE_CASE		:				Optional[str]            =    None






						def 					UpperCamelCase__					(		self      ):






												"""simple docstring"""
												return json.dumps(dataclasses.asdict(self      )   ,  indent=2      ) + "\n"




@dataclass(frozen=__lowercase)
class 			__SCREAMING_SNAKE_CASE    :
						_SCREAMING_SNAKE_CASE		:				List[int]
						_SCREAMING_SNAKE_CASE		:				Optional[List[int]]            =    None
						_SCREAMING_SNAKE_CASE		:				Optional[List[int]]            =    None
						_SCREAMING_SNAKE_CASE		:				Optional[Union[int, float]]            =    None






						def 					UpperCamelCase__					(		self      ):






												"""simple docstring"""
												return json.dumps(dataclasses.asdict(self      )      ) + "\n"




class 			__SCREAMING_SNAKE_CASE    :






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase      ):






												"""simple docstring"""
												raise NotImplementedError()






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase      ):






												"""simple docstring"""
												raise NotImplementedError()






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase      ):






												"""simple docstring"""
												raise NotImplementedError()






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase      ):






												"""simple docstring"""
												raise NotImplementedError()






						def 					UpperCamelCase__					(		self      ):






												"""simple docstring"""
												raise NotImplementedError()






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase      ):






												"""simple docstring"""
												if len(self.get_labels()      ) > 1:
																		lowerCAmelCase__			  =  self.get_labels()[int(example.label      )]
												return example







						@classmethod
						def 					UpperCamelCase__					(		cls   ,  _UpperCamelCase   ,  _UpperCamelCase=None      ):






												"""simple docstring"""
												with open(_UpperCamelCase   ,  'r'   ,  encoding='utf-8-sig'      ) as f:
																		return list(csv.reader(_UpperCamelCase   ,  delimiter='\t'   ,  quotechar=_UpperCamelCase      )      )




class 			__SCREAMING_SNAKE_CASE    (      __lowercase):






						def __init__(		self   ,  _UpperCamelCase=None   ,  _UpperCamelCase=None   ,  _UpperCamelCase="classification"   ,  _UpperCamelCase=False      ):






												"""simple docstring"""
												lowerCAmelCase__			  =  [] if labels is None else labels
												lowerCAmelCase__			  =  [] if examples is None else examples
												lowerCAmelCase__			  =  mode
												lowerCAmelCase__			  =  verbose






						def __len__(		self      ):






												"""simple docstring"""
												return len(self.examples      )






						def __getitem__(		self   ,  _UpperCamelCase      ):






												"""simple docstring"""
												if isinstance(_UpperCamelCase   ,  _UpperCamelCase      ):
																		return SingleSentenceClassificationProcessor(labels=self.labels   ,  examples=self.examples[idx]      )
												return self.examples[idx]






						@classmethod
						def 					UpperCamelCase__					(		cls   ,  _UpperCamelCase   ,  _UpperCamelCase=""   ,  _UpperCamelCase=0   ,  _UpperCamelCase=1   ,  _UpperCamelCase=None   ,  _UpperCamelCase=False   ,  **_UpperCamelCase      ):






												"""simple docstring"""
												lowerCAmelCase__			  =  cls(**_UpperCamelCase      )
												processor.add_examples_from_csv(
												    _UpperCamelCase   ,  split_name=_UpperCamelCase   ,  column_label=_UpperCamelCase   ,  column_text=_UpperCamelCase   ,  column_id=_UpperCamelCase   ,  skip_first_row=_UpperCamelCase   ,  overwrite_labels=_UpperCamelCase   ,  overwrite_examples=_UpperCamelCase   ,  )
												return processor






						@classmethod
						def 					UpperCamelCase__					(		cls   ,  _UpperCamelCase   ,  _UpperCamelCase=None   ,  **_UpperCamelCase      ):






												"""simple docstring"""
												lowerCAmelCase__			  =  cls(**_UpperCamelCase      )
												processor.add_examples(_UpperCamelCase   ,  labels=_UpperCamelCase      )
												return processor






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase   ,  _UpperCamelCase=""   ,  _UpperCamelCase=0   ,  _UpperCamelCase=1   ,  _UpperCamelCase=None   ,  _UpperCamelCase=False   ,  _UpperCamelCase=False   ,  _UpperCamelCase=False   ,  ):






												"""simple docstring"""
												lowerCAmelCase__			  =  self._read_tsv(_UpperCamelCase      )
												if skip_first_row:
																		lowerCAmelCase__			  =  lines[1:]
												lowerCAmelCase__			  =  []
												lowerCAmelCase__			  =  []
												lowerCAmelCase__			  =  []
												for i, line in enumerate(_UpperCamelCase      ):
																		texts.append(line[column_text]      )
																		labels.append(line[column_label]      )
																		if column_id is not None:
																								ids.append(line[column_id]      )
																		else:
																								lowerCAmelCase__			  =  F"{split_name}-{i}" if split_name else str(_UpperCamelCase      )
																								ids.append(_UpperCamelCase      )

												return self.add_examples(
												    _UpperCamelCase   ,  _UpperCamelCase   ,  _UpperCamelCase   ,  overwrite_labels=_UpperCamelCase   ,  overwrite_examples=_UpperCamelCase      )






						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase   ,  _UpperCamelCase=None   ,  _UpperCamelCase=None   ,  _UpperCamelCase=False   ,  _UpperCamelCase=False      ):






												"""simple docstring"""
												if labels is not None and len(_UpperCamelCase      ) != len(_UpperCamelCase      ):
																		raise ValueError(
																		    F"Text and labels have mismatched lengths {len(_UpperCamelCase      )} and {len(_UpperCamelCase      )}"      )
												if ids is not None and len(_UpperCamelCase      ) != len(_UpperCamelCase      ):
																		raise ValueError(F"Text and ids have mismatched lengths {len(_UpperCamelCase      )} and {len(_UpperCamelCase      )}"      )
												if ids is None:
																		lowerCAmelCase__			  =  [None] * len(_UpperCamelCase      )
												if labels is None:
																		lowerCAmelCase__			  =  [None] * len(_UpperCamelCase      )
												lowerCAmelCase__			  =  []
												lowerCAmelCase__			  =  set()
												for text_or_text_and_label, label, guid in zip(_UpperCamelCase   ,  _UpperCamelCase   ,  _UpperCamelCase      ):
																		if isinstance(_UpperCamelCase   ,  (tuple, list)      ) and label is None:
																								lowerCAmelCase__  ,				lowerCAmelCase__			  =  text_or_text_and_label
																		else:
																								lowerCAmelCase__			  =  text_or_text_and_label
																		added_labels.add(_UpperCamelCase      )
																		examples.append(InputExample(guid=_UpperCamelCase   ,  text_a=_UpperCamelCase   ,  text_b=_UpperCamelCase   ,  label=_UpperCamelCase      )      )

												# Update examples
												if overwrite_examples:
																		lowerCAmelCase__			  =  examples
												else:
																		self.examples.extend(_UpperCamelCase      )

												# Update labels
												if overwrite_labels:
																		lowerCAmelCase__			  =  list(_UpperCamelCase      )
												else:
																		lowerCAmelCase__			  =  list(set(self.labels      ).union(_UpperCamelCase      )      )

												return self.examples







						def 					UpperCamelCase__					(		self   ,  _UpperCamelCase   ,  _UpperCamelCase=None   ,  _UpperCamelCase=False   ,  _UpperCamelCase=0   ,  _UpperCamelCase=True   ,  _UpperCamelCase=None   ,  ):






												"""simple docstring"""
												if max_length is None:
																		lowerCAmelCase__			  =  tokenizer.max_len

												lowerCAmelCase__			  =  {label: i for i, label in enumerate(self.labels      )}

												lowerCAmelCase__			  =  []
												for ex_index, example in enumerate(self.examples      ):
																		if ex_index % 1_00_00 == 0:
																								logger.info(F"Tokenizing example {ex_index}"      )

																		lowerCAmelCase__			  =  tokenizer.encode(
																		    example.text_a   ,  add_special_tokens=_UpperCamelCase   ,  max_length=min(_UpperCamelCase   ,  tokenizer.max_len      )   ,  )
																		all_input_ids.append(_UpperCamelCase      )

												lowerCAmelCase__			  =  max(len(_UpperCamelCase      ) for input_ids in all_input_ids      )

												lowerCAmelCase__			  =  []
												for ex_index, (input_ids, example) in enumerate(zip(_UpperCamelCase   ,  self.examples      )      ):
																		if ex_index % 1_00_00 == 0:
																								logger.info(F"Writing example {ex_index}/{len(self.examples      )}"      )
																		# The mask has 1 for real tokens and 0 for padding tokens. Only real
																		# tokens are attended to.
																		lowerCAmelCase__			  =  [1 if mask_padding_with_zero else 0] * len(_UpperCamelCase      )

																		# Zero-pad up to the sequence length.
																		lowerCAmelCase__			  =  batch_length - len(_UpperCamelCase      )
																		if pad_on_left:
																								lowerCAmelCase__			  =  ([pad_token] * padding_length) + input_ids
																								lowerCAmelCase__			  =  ([0 if mask_padding_with_zero else 1] * padding_length) + attention_mask
																		else:
																								lowerCAmelCase__			  =  input_ids + ([pad_token] * padding_length)
																								lowerCAmelCase__			  =  attention_mask + ([0 if mask_padding_with_zero else 1] * padding_length)

																		if len(_UpperCamelCase      ) != batch_length:
																								raise ValueError(F"Error with input length {len(_UpperCamelCase      )} vs {batch_length}"      )
																		if len(_UpperCamelCase      ) != batch_length:
																								raise ValueError(F"Error with input length {len(_UpperCamelCase      )} vs {batch_length}"      )

																		if self.mode == "classification":
																								lowerCAmelCase__			  =  label_map[example.label]
																		elif self.mode == "regression":
																								lowerCAmelCase__			  =  float(example.label      )
																		else:
																								raise ValueError(self.mode      )

																		if ex_index < 5 and self.verbose:
																								logger.info('*** Example ***'      )
																								logger.info(F"guid: {example.guid}"      )
																								logger.info(F"input_ids: {' '.join([str(_UpperCamelCase      ) for x in input_ids]      )}"      )
																								logger.info(F"attention_mask: {' '.join([str(_UpperCamelCase      ) for x in attention_mask]      )}"      )
																								logger.info(F"label: {example.label} (id = {label})"      )

																		features.append(InputFeatures(input_ids=_UpperCamelCase   ,  attention_mask=_UpperCamelCase   ,  label=_UpperCamelCase      )      )

												if return_tensors is None:
																		return features
												elif return_tensors == "tf":
																		if not is_tf_available():
																								raise RuntimeError('return_tensors set to \'tf\' but TensorFlow 2.0 can\'t be imported'      )
																		import tensorflow as tf

																		def gen():
																								for ex in features:
																														yield ({"input_ids": ex.input_ids, "attention_mask": ex.attention_mask}, ex.label)

																		lowerCAmelCase__			  =  tf.data.Dataset.from_generator(
																		    _UpperCamelCase   ,  ({'input_ids': tf.intaa, 'attention_mask': tf.intaa}, tf.intaa)   ,  ({'input_ids': tf.TensorShape([None]      ), 'attention_mask': tf.TensorShape([None]      )}, tf.TensorShape([]      ))   ,  )
																		return dataset
												elif return_tensors == "pt":
																		if not is_torch_available():
																								raise RuntimeError('return_tensors set to \'pt\' but PyTorch can\'t be imported'      )
																		import torch
																		from torch.utils.data import TensorDataset

																		lowerCAmelCase__			  =  torch.tensor([f.input_ids for f in features]   ,  dtype=torch.long      )
																		lowerCAmelCase__			  =  torch.tensor([f.attention_mask for f in features]   ,  dtype=torch.long      )
																		if self.mode == "classification":
																								lowerCAmelCase__			  =  torch.tensor([f.label for f in features]   ,  dtype=torch.long      )
																		elif self.mode == "regression":
																								lowerCAmelCase__			  =  torch.tensor([f.label for f in features]   ,  dtype=torch.float      )

																		lowerCAmelCase__			  =  TensorDataset(_UpperCamelCase   ,  _UpperCamelCase   ,  _UpperCamelCase      )
																		return dataset
												else:
																		raise ValueError('return_tensors should be one of \'tf\' or \'pt\''      )





