



'''simple docstring'''





import os
from argparse import ArgumentParser
from typing import List

import torch.utils.data

from datasets import Dataset, IterableDataset
from datasets.distributed import split_dataset_by_node


lowercase_									=    4
lowercase_									=    3






class __A     (    A		):



 '''simple docstring'''







 pass





def lowerCAmelCase    (__A):



     """simple docstring"""



     for shard in shards:
          for i in range(__A):
               yield {"i": i, "shard": shard}




def lowerCAmelCase    ():



     """simple docstring"""



     _a           =    int(os.environ['''RANK'''])
     _a           =    int(os.environ['''WORLD_SIZE'''])

     _a           =    ArgumentParser()
     parser.add_argument('''--streaming'''    ,      type=__A)
     parser.add_argument('''--local_rank'''    ,      type=__A)
     parser.add_argument('''--num_workers'''    ,      type=__A    ,      default=0)
     _a           =    parser.parse_args()
     _a           =    args.streaming
     _a           =    args.num_workers

     _a           =    {'''shards''': [F'''shard_{shard_idx}''' for shard_idx in range(__A)]}
     _a           =    IterableDataset.from_generator(__A    ,      gen_kwargs=__A)
     if not streaming:
          _a           =    Dataset.from_list(list(__A))

     _a           =    split_dataset_by_node(__A    ,      rank=__A    ,      world_size=__A)
     _a           =    torch.utils.data.DataLoader(__A    ,      num_workers=__A)

     _a           =    NUM_SHARDS * NUM_ITEMS_PER_SHARD
     _a           =    full_size // world_size
     expected_local_size += int(rank < (full_size % world_size))

     _a           =    sum(1 for _ in dataloader)
     if local_size != expected_local_size:
          raise FailedTestError(F'''local_size {local_size} != expected_local_size {expected_local_size}''')


if __name__ == "__main__":
  main()







'''simple docstring'''





def 						UpperCAmelCase__(				_SCREAMING_SNAKE_CASE					: int,_SCREAMING_SNAKE_CASE					: int,_SCREAMING_SNAKE_CASE					: int ):






			"""simple docstring"""




			if exponent == 1:
						return base
			if exponent % 2 == 0:
						__A=	_modexpt(_SCREAMING_SNAKE_CASE,exponent // 2,_SCREAMING_SNAKE_CASE ) % modulo_value
						return (x * x) % modulo_value
			else:
						return (base * _modexpt(_SCREAMING_SNAKE_CASE,exponent - 1,_SCREAMING_SNAKE_CASE )) % modulo_value






def 						UpperCAmelCase__(				_SCREAMING_SNAKE_CASE					: int = 1777,_SCREAMING_SNAKE_CASE					: int = 1855,_SCREAMING_SNAKE_CASE					: int = 8 ):






			"""simple docstring"""




			__A=	base
			for _ in range(1,_SCREAMING_SNAKE_CASE ):
						__A=	_modexpt(_SCREAMING_SNAKE_CASE,_SCREAMING_SNAKE_CASE,10**digits )

			return result


if __name__ == "__main__":
					print(F"""{solution() = }""")



