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


UpperCamelCase__    							= 4
UpperCamelCase__    							= 3





class 					A							(    UpperCAmelCase_					):
   pass




def        lowerCAmelCase_			(					__A							)					->    str:







      '''simple docstring'''


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




def        lowerCAmelCase_			(					)					->    Union[str, Any]:







      '''simple docstring'''


      UpperCAmelCase__								=  int(os.environ["RANK"]							)
      UpperCAmelCase__								=  int(os.environ["WORLD_SIZE"]							)

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

      UpperCAmelCase__								=  {"shards": [f"""shard_{shard_idx}""" for shard_idx in range(lowerCAmelCase__							)]}
      UpperCAmelCase__								=  IterableDataset.from_generator(lowerCAmelCase__,  gen_kwargs=lowerCAmelCase__							)
      if not streaming:
            UpperCAmelCase__								=  Dataset.from_list(list(lowerCAmelCase__							)							)

      UpperCAmelCase__								=  split_dataset_by_node(lowerCAmelCase__,  rank=lowerCAmelCase__,  world_size=lowerCAmelCase__							)
      UpperCAmelCase__								=  torch.utils.data.DataLoader(lowerCAmelCase__,  num_workers=lowerCAmelCase__							)

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

      UpperCAmelCase__								=  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()




# Copyright 2021 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import argparse

from .config import config_command_parser
from .config_args import default_config_file, load_config_from_file  # noqa: F401
from .default import default_command_parser
from .update import update_command_parser




def        lowerCAmelCase_			(					__A=None							)					->    str:







      '''simple docstring'''


      UpperCAmelCase__								=  argparse.ArgumentParser(add_help=__A,  allow_abbrev=__A							)
      # The main config parser
      UpperCAmelCase__								=  config_command_parser(__A							)
      # The subparser to add commands to
      UpperCAmelCase__								=  config_parser.add_subparsers(title="subcommands",  dest="subcommand"							)

      # Then add other parsers with the parent parser
      default_command_parser(__A,  parents=[parent_parser]							)
      update_command_parser(__A,  parents=[parent_parser]							)

      return config_parser




def        lowerCAmelCase_			(					)					->    Any:







      '''simple docstring'''


      UpperCAmelCase__								=  get_config_parser()
      UpperCAmelCase__								=  config_parser.parse_args()

      if not hasattr(__A,  "func"							):
            config_parser.print_help()
            exit(1							)

      # Run
      args.func(__A							)


if __name__ == "__main__":
      main()



