


'''simple docstring'''



import argparse
import csv
import logging
import os
import random

import numpy as np
import torch
from torch.utils.data import DataLoader, RandomSampler, SequentialSampler, TensorDataset
from tqdm import tqdm, trange

from transformers import (
    CONFIG_NAME,
    WEIGHTS_NAME,
    AdamW,
    OpenAIGPTDoubleHeadsModel,
    OpenAIGPTTokenizer,
    get_linear_schedule_with_warmup,
)


logging.basicConfig(
    format="""%(asctime)s - %(levelname)s - %(name)s - %(message)s""", datefmt="""%m/%d/%Y %H:%M:%S""", level=logging.INFO
)
A__		:					List[Any]												=  logging.getLogger(__name__)



def 			UpperCAmelCase__					(	UpperCAmelCase_    :				List[Any]      ,    UpperCAmelCase_    :				Any							)     ->		Tuple:
     __lowerCamelCase   :	List[str]								=		np.argmax(UpperCAmelCase_      ,    axis=1							)
     return np.sum(outputs == labels							)



def 			UpperCAmelCase__					(	UpperCAmelCase_    :				List[str]							)     ->		Union[str, Any]:
     with open(UpperCAmelCase_      ,    encoding='utf_8'							) as f:
          __lowerCamelCase   :	Union[str, Any]								=		csv.reader(UpperCAmelCase_							)
          __lowerCamelCase   :	Any								=		[]
          next(UpperCAmelCase_							)  # skip the first line
          for line in tqdm(UpperCAmelCase_							):
               output.append((' '.join(line[1:5]							), line[5], line[6], int(line[-1]							) - 1)							)
     return output



def 			UpperCAmelCase__					(	UpperCAmelCase_    :				Union[str, Any]      ,    UpperCAmelCase_    :				List[str]      ,    UpperCAmelCase_    :				List[str]      ,    UpperCAmelCase_    :				Optional[int]      ,    UpperCAmelCase_    :				Union[str, Any]      ,    UpperCAmelCase_    :				Optional[int]							)     ->		Optional[Any]:
     __lowerCamelCase   :	Optional[Any]								=		[]
     for dataset in encoded_datasets:
          __lowerCamelCase   :	Union[str, Any]								=		len(UpperCAmelCase_							)
          __lowerCamelCase   :	Any								=		np.zeros((n_batch, 2, input_len)      ,    dtype=np.intaa							)
          __lowerCamelCase   :	Optional[int]								=		np.zeros((n_batch, 2)      ,    dtype=np.intaa							)
          __lowerCamelCase   :	List[Any]								=		np.full((n_batch, 2, input_len)      ,    fill_value=-1_00      ,    dtype=np.intaa							)
          __lowerCamelCase   :	Dict								=		np.zeros((n_batch,)      ,    dtype=np.intaa							)
          for (
              i,
              (story, conta, conta, mc_label),
          ) in enumerate(UpperCAmelCase_							):
               __lowerCamelCase   :	List[Any]								=		[start_token] + story[:cap_length] + [delimiter_token] + conta[:cap_length] + [clf_token]
               __lowerCamelCase   :	Union[str, Any]								=		[start_token] + story[:cap_length] + [delimiter_token] + conta[:cap_length] + [clf_token]
               __lowerCamelCase   :	int								=		with_conta
               __lowerCamelCase   :	Union[str, Any]								=		with_conta
               __lowerCamelCase   :	Optional[Any]								=		len(UpperCAmelCase_							) - 1
               __lowerCamelCase   :	Optional[int]								=		len(UpperCAmelCase_							) - 1
               __lowerCamelCase   :	Union[str, Any]								=		with_conta
               __lowerCamelCase   :	Tuple								=		with_conta
               __lowerCamelCase   :	Optional[Any]								=		mc_label
          __lowerCamelCase   :	int								=		(input_ids, mc_token_ids, lm_labels, mc_labels)
          tensor_datasets.append(tuple(torch.tensor(UpperCAmelCase_							) for t in all_inputs							)							)
     return tensor_datasets



def 			UpperCAmelCase__					(	)     ->		List[Any]:
     __lowerCamelCase   :	Union[str, Any]								=		argparse.ArgumentParser()
     parser.add_argument('--model_name'      ,    type=UpperCAmelCase_      ,    default='openai-gpt'      ,    help='pretrained model name'							)
     parser.add_argument('--do_train'      ,    action='store_true'      ,    help='Whether to run training.'							)
     parser.add_argument('--do_eval'      ,    action='store_true'      ,    help='Whether to run eval on the dev set.'							)
     parser.add_argument(
         '--output_dir'      ,    default=UpperCAmelCase_      ,    type=UpperCAmelCase_      ,    required=UpperCAmelCase_      ,    help='The output directory where the model predictions and checkpoints will be written.'      ,    )
     parser.add_argument('--train_dataset'      ,    type=UpperCAmelCase_      ,    default=''							)
     parser.add_argument('--eval_dataset'      ,    type=UpperCAmelCase_      ,    default=''							)
     parser.add_argument('--seed'      ,    type=UpperCAmelCase_      ,    default=42							)
     parser.add_argument('--num_train_epochs'      ,    type=UpperCAmelCase_      ,    default=3							)
     parser.add_argument('--train_batch_size'      ,    type=UpperCAmelCase_      ,    default=8							)
     parser.add_argument('--eval_batch_size'      ,    type=UpperCAmelCase_      ,    default=16							)
     parser.add_argument('--adam_epsilon'      ,    default=1e-8      ,    type=UpperCAmelCase_      ,    help='Epsilon for Adam optimizer.'							)
     parser.add_argument('--max_grad_norm'      ,    type=UpperCAmelCase_      ,    default=1							)
     parser.add_argument(
         '--max_steps'      ,    default=-1      ,    type=UpperCAmelCase_      ,    help=(
             'If > 0: set total number of training                         steps to perform. Override num_train_epochs.'
         )      ,    )
     parser.add_argument(
         '--gradient_accumulation_steps'      ,    type=UpperCAmelCase_      ,    default=1      ,    help='Number of updates steps to accumulate before                        performing a backward/update pass.'      ,    )
     parser.add_argument('--learning_rate'      ,    type=UpperCAmelCase_      ,    default=6.25e-5							)
     parser.add_argument('--warmup_steps'      ,    default=0      ,    type=UpperCAmelCase_      ,    help='Linear warmup over warmup_steps.'							)
     parser.add_argument('--lr_schedule'      ,    type=UpperCAmelCase_      ,    default='warmup_linear'							)
     parser.add_argument('--weight_decay'      ,    type=UpperCAmelCase_      ,    default=0.01							)
     parser.add_argument('--lm_coef'      ,    type=UpperCAmelCase_      ,    default=0.9							)
     parser.add_argument('--n_valid'      ,    type=UpperCAmelCase_      ,    default=3_74							)

     parser.add_argument('--server_ip'      ,    type=UpperCAmelCase_      ,    default=''      ,    help='Can be used for distant debugging.'							)
     parser.add_argument('--server_port'      ,    type=UpperCAmelCase_      ,    default=''      ,    help='Can be used for distant debugging.'							)
     __lowerCamelCase   :	Any								=		parser.parse_args()
     print(UpperCAmelCase_							)

     if args.server_ip and args.server_port:
          # Distant debugging - see https://code.visualstudio.com/docs/python/debugging#_attach-to-a-local-script
          import ptvsd

          print('Waiting for debugger attach'							)
          ptvsd.enable_attach(address=(args.server_ip, args.server_port)      ,    redirect_output=UpperCAmelCase_							)
          ptvsd.wait_for_attach()

     random.seed(args.seed							)
     np.random.seed(args.seed							)
     torch.manual_seed(args.seed							)
     torch.cuda.manual_seed_all(args.seed							)

     __lowerCamelCase   :	Tuple								=		torch.device('cuda' if torch.cuda.is_available() else 'cpu'							)
     __lowerCamelCase   :	Tuple								=		torch.cuda.device_count()
     logger.info('device: {}, n_gpu {}'.format(UpperCAmelCase_      ,    UpperCAmelCase_							)							)

     if not args.do_train and not args.do_eval:
          raise ValueError('At least one of `do_train` or `do_eval` must be True.'							)

     if not os.path.exists(args.output_dir							):
          os.makedirs(args.output_dir							)

     # Load tokenizer and model
     # This loading functions also add new tokens and embeddings called `special tokens`
     # These new embeddings will be fine-tuned on the RocStories dataset
     __lowerCamelCase   :	Union[str, Any]								=		['_start_', '_delimiter_', '_classify_']
     __lowerCamelCase   :	Dict								=		OpenAIGPTTokenizer.from_pretrained(args.model_name							)
     tokenizer.add_tokens(UpperCAmelCase_							)
     __lowerCamelCase   :	int								=		tokenizer.convert_tokens_to_ids(UpperCAmelCase_							)
     __lowerCamelCase   :	List[str]								=		OpenAIGPTDoubleHeadsModel.from_pretrained(args.model_name							)
     model.resize_token_embeddings(len(UpperCAmelCase_							)							)
     model.to(UpperCAmelCase_							)

     # Load and encode the datasets
     def tokenize_and_encode(UpperCAmelCase_    :				str							):
          if isinstance(UpperCAmelCase_      ,    UpperCAmelCase_							):
               return tokenizer.convert_tokens_to_ids(tokenizer.tokenize(UpperCAmelCase_							)							)
          elif isinstance(UpperCAmelCase_      ,    UpperCAmelCase_							):
               return obj
          return [tokenize_and_encode(UpperCAmelCase_							) for o in obj]

     logger.info('Encoding dataset...'							)
     __lowerCamelCase   :	Union[str, Any]								=		load_rocstories_dataset(args.train_dataset							)
     __lowerCamelCase   :	int								=		load_rocstories_dataset(args.eval_dataset							)
     __lowerCamelCase   :	Union[str, Any]								=		(train_dataset, eval_dataset)
     __lowerCamelCase   :	int								=		tokenize_and_encode(UpperCAmelCase_							)

     # Compute the max input length for the Transformer
     __lowerCamelCase   :	Optional[int]								=		model.config.n_positions // 2 - 2
     __lowerCamelCase   :	Union[str, Any]								=		max(
         len(story[:max_length]							) + max(len(conta[:max_length]							)      ,    len(conta[:max_length]							)							) + 3
         for dataset in encoded_datasets
         for story, conta, conta, _ in dataset							)
     __lowerCamelCase   :	Tuple								=		min(UpperCAmelCase_      ,    model.config.n_positions							)  # Max size of input for the pre-trained model

     # Prepare inputs tensors and dataloaders
     __lowerCamelCase   :	List[Any]								=		pre_process_datasets(UpperCAmelCase_      ,    UpperCAmelCase_      ,    UpperCAmelCase_      ,    *UpperCAmelCase_							)
     __lowerCamelCase				,       __lowerCamelCase   :	Optional[Any]								=		tensor_datasets[0], tensor_datasets[1]

     __lowerCamelCase   :	Optional[int]								=		TensorDataset(*UpperCAmelCase_							)
     __lowerCamelCase   :	List[str]								=		RandomSampler(UpperCAmelCase_							)
     __lowerCamelCase   :	str								=		DataLoader(UpperCAmelCase_      ,    sampler=UpperCAmelCase_      ,    batch_size=args.train_batch_size							)

     __lowerCamelCase   :	Union[str, Any]								=		TensorDataset(*UpperCAmelCase_							)
     __lowerCamelCase   :	int								=		SequentialSampler(UpperCAmelCase_							)
     __lowerCamelCase   :	List[str]								=		DataLoader(UpperCAmelCase_      ,    sampler=UpperCAmelCase_      ,    batch_size=args.eval_batch_size							)

     # Prepare optimizer
     if args.do_train:
          if args.max_steps > 0:
               __lowerCamelCase   :	List[Any]								=		args.max_steps
               __lowerCamelCase   :	Any								=		args.max_steps // (len(UpperCAmelCase_							) // args.gradient_accumulation_steps) + 1
          else:
               __lowerCamelCase   :	Optional[Any]								=		len(UpperCAmelCase_							) // args.gradient_accumulation_steps * args.num_train_epochs

          __lowerCamelCase   :	Optional[Any]								=		list(model.named_parameters()							)
          __lowerCamelCase   :	Optional[int]								=		['bias', 'LayerNorm.bias', 'LayerNorm.weight']
          __lowerCamelCase   :	List[str]								=		[
              {
                  'params': [p for n, p in param_optimizer if not any(nd in n for nd in no_decay							)],
                  'weight_decay': args.weight_decay,
              },
              {'params': [p for n, p in param_optimizer if any(nd in n for nd in no_decay							)], 'weight_decay': 0.0},
          ]
          __lowerCamelCase   :	Tuple								=		AdamW(UpperCAmelCase_      ,    lr=args.learning_rate      ,    eps=args.adam_epsilon							)
          __lowerCamelCase   :	List[str]								=		get_linear_schedule_with_warmup(
              UpperCAmelCase_      ,    num_warmup_steps=args.warmup_steps      ,    num_training_steps=UpperCAmelCase_							)

     if args.do_train:
          __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase   :	Any								=		0, 0, None
          model.train()
          for _ in trange(int(args.num_train_epochs							)      ,    desc='Epoch'							):
               __lowerCamelCase   :	Tuple								=		0
               __lowerCamelCase   :	str								=		0
               __lowerCamelCase   :	Tuple								=		tqdm(UpperCAmelCase_      ,    desc='Training'							)
               for step, batch in enumerate(UpperCAmelCase_							):
                    __lowerCamelCase   :	Dict								=		tuple(t.to(UpperCAmelCase_							) for t in batch							)
                    __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase   :	List[str]								=		batch
                    __lowerCamelCase   :	Dict								=		model(UpperCAmelCase_      ,    mc_token_ids=UpperCAmelCase_      ,    lm_labels=UpperCAmelCase_      ,    mc_labels=UpperCAmelCase_							)
                    __lowerCamelCase   :	Union[str, Any]								=		args.lm_coef * losses[0] + losses[1]
                    loss.backward()
                    optimizer.step()
                    scheduler.step()
                    optimizer.zero_grad()
                    tr_loss += loss.item()
                    __lowerCamelCase   :	Dict								=		(
                        loss.item() if exp_average_loss is None else 0.7 * exp_average_loss + 0.3 * loss.item()
                    )
                    nb_tr_steps += 1
                    __lowerCamelCase   :	Tuple								=		'Training loss: {:.2e} lr: {:.2e}'.format(UpperCAmelCase_      ,    scheduler.get_lr()[0]							)

    # Save a trained model
     if args.do_train:
          # Save a trained model, configuration and tokenizer
          __lowerCamelCase   :	Union[str, Any]								=		model.module if hasattr(UpperCAmelCase_      ,    'module'							) else model  # Only save the model itself

          # If we save using the predefined names, we can load using `from_pretrained`
          __lowerCamelCase   :	str								=		os.path.join(args.output_dir      ,    UpperCAmelCase_							)
          __lowerCamelCase   :	Union[str, Any]								=		os.path.join(args.output_dir      ,    UpperCAmelCase_							)

          torch.save(model_to_save.state_dict()      ,    UpperCAmelCase_							)
          model_to_save.config.to_json_file(UpperCAmelCase_							)
          tokenizer.save_vocabulary(args.output_dir							)

          # Load a trained model and vocabulary that you have fine-tuned
          __lowerCamelCase   :	Optional[int]								=		OpenAIGPTDoubleHeadsModel.from_pretrained(args.output_dir							)
          __lowerCamelCase   :	List[str]								=		OpenAIGPTTokenizer.from_pretrained(args.output_dir							)
          model.to(UpperCAmelCase_							)

     if args.do_eval:
          model.eval()
          __lowerCamelCase				,       __lowerCamelCase   :	Union[str, Any]								=		0, 0
          __lowerCamelCase				,       __lowerCamelCase   :	Union[str, Any]								=		0, 0
          for batch in tqdm(UpperCAmelCase_      ,    desc='Evaluating'							):
               __lowerCamelCase   :	List[Any]								=		tuple(t.to(UpperCAmelCase_							) for t in batch							)
               __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase   :	Tuple								=		batch
               with torch.no_grad():
                    __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase				,       __lowerCamelCase   :	Optional[Any]								=		model(
                        UpperCAmelCase_      ,    mc_token_ids=UpperCAmelCase_      ,    lm_labels=UpperCAmelCase_      ,    mc_labels=UpperCAmelCase_							)

               __lowerCamelCase   :	Optional[Any]								=		mc_logits.detach().cpu().numpy()
               __lowerCamelCase   :	List[str]								=		mc_labels.to('cpu'							).numpy()
               __lowerCamelCase   :	str								=		accuracy(UpperCAmelCase_      ,    UpperCAmelCase_							)

               eval_loss += mc_loss.mean().item()
               eval_accuracy += tmp_eval_accuracy

               nb_eval_examples += input_ids.size(0							)
               nb_eval_steps += 1

          __lowerCamelCase   :	Any								=		eval_loss / nb_eval_steps
          __lowerCamelCase   :	List[str]								=		eval_accuracy / nb_eval_examples
          __lowerCamelCase   :	Any								=		tr_loss / nb_tr_steps if args.do_train else None
          __lowerCamelCase   :	Union[str, Any]								=		{'eval_loss': eval_loss, 'eval_accuracy': eval_accuracy, 'train_loss': train_loss}

          __lowerCamelCase   :	List[Any]								=		os.path.join(args.output_dir      ,    'eval_results.txt'							)
          with open(UpperCAmelCase_      ,    'w'							) as writer:
               logger.info('***** Eval results *****'							)
               for key in sorted(result.keys()							):
                    logger.info('  %s = %s'      ,    UpperCAmelCase_      ,    str(result[key]							)							)
                    writer.write('%s = %s\n' % (key, str(result[key]							))							)


if __name__ == "__main__":
      main()










'''simple docstring'''



import unittest

from knapsack import knapsack as k





class    UpperCAmelCase_  (unittest.TestCase  ):





    """simple docstring"""






    def       lowercase_				(							self	)				->     Optional[Any]:
         __lowerCamelCase   :	int								=		0
         __lowerCamelCase   :	Union[str, Any]								=		[0]
         __lowerCamelCase   :	Any								=		[0]
         __lowerCamelCase   :	Union[str, Any]								=		len(SCREAMING_SNAKE_CASE_	)
         self.assertEqual(k.knapsack(SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_	)			,     0	)

         __lowerCamelCase   :	List[str]								=		[60]
         __lowerCamelCase   :	Union[str, Any]								=		[10]
         __lowerCamelCase   :	List[Any]								=		len(SCREAMING_SNAKE_CASE_	)
         self.assertEqual(k.knapsack(SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_	)			,     0	)







    def       lowercase_				(							self	)				->     List[str]:
         __lowerCamelCase   :	Optional[int]								=		3
         __lowerCamelCase   :	int								=		[1, 2, 3]
         __lowerCamelCase   :	str								=		[3, 2, 1]
         __lowerCamelCase   :	Union[str, Any]								=		len(SCREAMING_SNAKE_CASE_	)
         self.assertEqual(k.knapsack(SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_	)			,     5	)







    def       lowercase_				(							self	)				->     int:
         __lowerCamelCase   :	Optional[int]								=		50
         __lowerCamelCase   :	List[str]								=		[60, 1_00, 1_20]
         __lowerCamelCase   :	List[str]								=		[10, 20, 30]
         __lowerCamelCase   :	List[str]								=		len(SCREAMING_SNAKE_CASE_	)
         self.assertEqual(k.knapsack(SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_			,     SCREAMING_SNAKE_CASE_	)			,     2_20	)


if __name__ == "__main__":
      unittest.main()






