
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


__A							=4
__A							=3




class        _SCREAMING_SNAKE_CASE	( snake_case_		):
	pass





def      lowerCamelCase_					(							lowerCamelCase__       ):
				for shard in shards:
								for i in range(lowerCamelCase__       ):
												yield {"i": i, "shard": shard}





def      lowerCamelCase_					(							):
				lowerCamelCase_         =     int(os.environ["RANK"]       )
				lowerCamelCase_         =     int(os.environ["WORLD_SIZE"]       )

				lowerCamelCase_         =     ArgumentParser()
				parser.add_argument("--streaming"      ,					type=lowerCamelCase__       )
				parser.add_argument("--local_rank"      ,					type=lowerCamelCase__       )
				parser.add_argument("--num_workers"      ,					type=lowerCamelCase__      ,					default=0       )
				lowerCamelCase_         =     parser.parse_args()
				lowerCamelCase_         =     args.streaming
				lowerCamelCase_         =     args.num_workers

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

				lowerCamelCase_         =     split_dataset_by_node(lowerCamelCase__      ,					rank=lowerCamelCase__      ,					world_size=lowerCamelCase__       )
				lowerCamelCase_         =     torch.utils.data.DataLoader(lowerCamelCase__      ,					num_workers=lowerCamelCase__       )

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

				lowerCamelCase_         =     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()




import re





def      lowerCamelCase_					(							lowerCamelCase__       ):
				return [char.split() for char in re.split(r"[^ a-z A-Z 0-9 \s]"      ,					str_       )]





def      lowerCamelCase_					(							lowerCamelCase__       ):
				lowerCamelCase_         =     split_input(str_       )
				return "".join(
				    ["".join([char.capitalize() for char in sub_str]       ) for sub_str in string_split]       )





def      lowerCamelCase_					(							lowerCamelCase__      ,					lowerCamelCase__      ,					lowerCamelCase__       ):
				try:
								lowerCamelCase_         =     split_input(lowerCamelCase__       )
								if upper:
												lowerCamelCase_         =     "".join(
												    [
												        separator.join([char.upper() for char in sub_str]       )
												        for sub_str in string_split
												    ]       )
								else:
												lowerCamelCase_         =     "".join(
												    [
												        separator.join([char.lower() for char in sub_str]       )
												        for sub_str in string_split
												    ]       )
								return res_str
				except IndexError:
								return "not valid string"





def      lowerCamelCase_					(							lowerCamelCase__       ):
				return to_simple_case(lowerCamelCase__       )





def      lowerCamelCase_					(							lowerCamelCase__       ):
				try:
								lowerCamelCase_         =     to_simple_case(lowerCamelCase__       )
								return res_str[0].lower() + res_str[1:]
				except IndexError:
								return "not valid string"





def      lowerCamelCase_					(							lowerCamelCase__      ,					lowerCamelCase__       ):
				return to_complex_case(lowerCamelCase__      ,					lowerCamelCase__      ,					"_"       )





def      lowerCamelCase_					(							lowerCamelCase__      ,					lowerCamelCase__       ):
				return to_complex_case(lowerCamelCase__      ,					lowerCamelCase__      ,					"-"       )


if __name__ == "__main__":
			__import__('''doctest''').testmod()


