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


SCREAMING_SNAKE_CASE__		:       Any       						=       4
SCREAMING_SNAKE_CASE__		:       Optional[Any]       						=       3

class    snake_case       (   UpperCamelCase_    ):
  pass







def      _a					(   lowercase__	:      List[str]			):







     '''simple docstring'''


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







def      _a					(   ):







     '''simple docstring'''


     SCREAMING_SNAKE_CASE__					:					str      =		int(os.environ['RANK']			)
     SCREAMING_SNAKE_CASE__					:					List[Any]      =		int(os.environ['WORLD_SIZE']			)

     SCREAMING_SNAKE_CASE__					:					Union[str, Any]      =		ArgumentParser()
     parser.add_argument('--streaming'  ,	type=lowercase__			)
     parser.add_argument('--local_rank'  ,	type=lowercase__			)
     parser.add_argument('--num_workers'  ,	type=lowercase__  ,	default=0			)
     SCREAMING_SNAKE_CASE__					:					Union[str, Any]      =		parser.parse_args()
     SCREAMING_SNAKE_CASE__					:					List[str]      =		args.streaming
     SCREAMING_SNAKE_CASE__					:					int      =		args.num_workers

     SCREAMING_SNAKE_CASE__					:					Optional[int]      =		{'shards': [f'''shard_{shard_idx}''' for shard_idx in range(lowercase__			)]}
     SCREAMING_SNAKE_CASE__					:					Any      =		IterableDataset.from_generator(lowercase__  ,	gen_kwargs=lowercase__			)
     if not streaming:
          SCREAMING_SNAKE_CASE__					:					int      =		Dataset.from_list(list(lowercase__			)			)

     SCREAMING_SNAKE_CASE__					:					Optional[Any]      =		split_dataset_by_node(lowercase__  ,	rank=lowercase__  ,	world_size=lowercase__			)
     SCREAMING_SNAKE_CASE__					:					str      =		torch.utils.data.DataLoader(lowercase__  ,	num_workers=lowercase__			)

     SCREAMING_SNAKE_CASE__					:					Tuple      =		NUM_SHARDS * NUM_ITEMS_PER_SHARD
     SCREAMING_SNAKE_CASE__					:					Tuple      =		full_size // world_size
     expected_local_size += int(rank < (full_size % world_size)			)

     SCREAMING_SNAKE_CASE__					:					List[str]      =		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 inspect
import warnings
from typing import Any, Dict, Optional, Union

from packaging import version





def 						__A						(      *__lowerCamelCase				,     __lowerCamelCase = None				,     __lowerCamelCase=True				,     __lowerCamelCase=2       ) ->			Dict:
	from .. import __version__

	a									=				take_from
	a									=				()
	if not isinstance(args[0]				,     __lowerCamelCase       ):
		a									=				(args,)

	for attribute, version_name, message in args:
		if version.parse(version.parse(__lowerCamelCase       ).base_version       ) >= version.parse(__lowerCamelCase       ):
			raise ValueError(
			    f'The deprecation tuple {(attribute, version_name, message)} should be removed since diffusers\''
			    f' version {__version__} is >= {version_name}'       )

		a									=				None
		if isinstance(__lowerCamelCase				,     __lowerCamelCase       ) and attribute in deprecated_kwargs:
			values += (deprecated_kwargs.pop(__lowerCamelCase       ),)
			a									=				f'The `{attribute}` argument is deprecated and will be removed in version {version_name}.'
		elif hasattr(__lowerCamelCase				,     __lowerCamelCase       ):
			values += (getattr(__lowerCamelCase				,     __lowerCamelCase       ),)
			a									=				f'The `{attribute}` attribute is deprecated and will be removed in version {version_name}.'
		elif deprecated_kwargs is None:
			a									=				f'`{attribute}` is deprecated and will be removed in version {version_name}.'

		if warning is not None:
			a									=				warning + """ """ if standard_warn else """"""
			warnings.warn(warning + message				,     __lowerCamelCase				,     stacklevel=__lowerCamelCase       )

	if isinstance(__lowerCamelCase				,     __lowerCamelCase       ) and len(__lowerCamelCase       ) > 0:
		a									=				inspect.getouterframes(inspect.currentframe()       )[1]
		a									=				call_frame.filename
		a									=				call_frame.lineno
		a									=				call_frame.function
		a							,					a									=				next(iter(deprecated_kwargs.items()       )       )
		raise TypeError(f'{function} in {filename} line {line_number-1} got an unexpected keyword argument `{key}`'       )

	if len(__lowerCamelCase       ) == 0:
		return
	elif len(__lowerCamelCase       ) == 1:
		return values[0]
	return values

