



UpperCAmelCase_									=							{
    "A": ["B", "C", "E"],
    "B": ["A", "D", "E"],
    "C": ["A", "F", "G"],
    "D": ["B"],
    "E": ["A", "B", "D"],
    "F": ["C"],
    "G": ["C"],
}
def 							UpperCAmelCase__		(				_SCREAMING_SNAKE_CASE   :	dict     ,				_SCREAMING_SNAKE_CASE   :	List[Any]     ,				_SCREAMING_SNAKE_CASE   :	Optional[Any]				)->list[str]:
      _lowerCAmelCase 			=  set()
      # keep track of all the paths to be checked
      _lowerCAmelCase 			=  [[start]]

      # return path if start is goal
      if start == goal:
            return [start]

      # keeps looping until all possible paths have been checked
      while queue:
            # pop the first path from the queue
            _lowerCAmelCase 			=  queue.pop(0				)
            # get the last node from the path
            _lowerCAmelCase 			=  path[-1]
            if node not in explored:
                  _lowerCAmelCase 			=  graph[node]
                  # go through all neighbour nodes, construct a new path and
                  # push it into the queue
                  for neighbour in neighbours:
                        _lowerCAmelCase 			=  list(_SCREAMING_SNAKE_CASE				)
                        new_path.append(_SCREAMING_SNAKE_CASE				)
                        queue.append(_SCREAMING_SNAKE_CASE				)
                        # return path if neighbour is goal
                        if neighbour == goal:
                              return new_path

            # mark node as explored
                  explored.add(_SCREAMING_SNAKE_CASE				)

    # in case there's no path between the 2 nodes
      return []
def 							UpperCAmelCase__		(				_SCREAMING_SNAKE_CASE   :	dict     ,				_SCREAMING_SNAKE_CASE   :	List[str]     ,				_SCREAMING_SNAKE_CASE   :	Union[str, Any]				)->int:
      if not graph or start not in graph or target not in graph:
            return -1
      if start == target:
            return 0
      _lowerCAmelCase 			=  [start]
      _lowerCAmelCase 			=  set(_SCREAMING_SNAKE_CASE				)
      # Keep tab on distances from `start` node.
      _lowerCAmelCase 			=  {start: 0, target: -1}
      while queue:
            _lowerCAmelCase 			=  queue.pop(0				)
            if node == target:
                  _lowerCAmelCase 			=  (
                      dist[node] if dist[target] == -1 else min(dist[target]     ,				dist[node]				)
                  )
            for adjacent in graph[node]:
                  if adjacent not in visited:
                        visited.add(_SCREAMING_SNAKE_CASE				)
                        queue.append(_SCREAMING_SNAKE_CASE				)
                        _lowerCAmelCase 			=  dist[node] + 1
      return dist[target]


if __name__ == "__main__":
    print(bfs_shortest_path(demo_graph, "G", "D"))  # returns ['G', 'C', 'A', 'B', 'D']
    print(bfs_shortest_path_distance(demo_graph, "G", "D"))  # returns 4




# 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
import os

from accelerate.utils import ComputeEnvironment

from .cluster import get_cluster_input
from .config_args import cache_dir, default_config_file, default_yaml_config_file, load_config_from_file  # noqa: F401
from .config_utils import _ask_field, _ask_options, _convert_compute_environment  # noqa: F401
from .sagemaker import get_sagemaker_input


UpperCAmelCase_									=							"Launches a series of prompts to create and save a `default_config.yaml` configuration file for your training system. Should always be ran first on your machine"
def 							UpperCAmelCase__		(				)->Any:
      _lowerCAmelCase 			=  _ask_options(
          '''In which compute environment are you running?'''     ,				['''This machine''', '''AWS (Amazon SageMaker)''']     ,				_convert_compute_environment     ,				)
      if compute_environment == ComputeEnvironment.AMAZON_SAGEMAKER:
            _lowerCAmelCase 			=  get_sagemaker_input()
      else:
            _lowerCAmelCase 			=  get_cluster_input()
      return config
def 							UpperCAmelCase__		(				_SCREAMING_SNAKE_CASE   :	int=None				)->str:
      if subparsers is not None:
            _lowerCAmelCase 			=  subparsers.add_parser('''config'''     ,				description=_SCREAMING_SNAKE_CASE				)
      else:
            _lowerCAmelCase 			=  argparse.ArgumentParser('''Accelerate config command'''     ,				description=_SCREAMING_SNAKE_CASE				)

      parser.add_argument(
          '''--config_file'''     ,				default=_SCREAMING_SNAKE_CASE     ,				help=(
              '''The path to use to store the config file. Will default to a file named default_config.yaml in the cache '''
              '''location, which is the content of the environment `HF_HOME` suffixed with \'accelerate\', or if you don\'t have '''
              '''such an environment variable, your cache directory (\'~/.cache\' or the content of `XDG_CACHE_HOME`) suffixed '''
              '''with \'huggingface\'.'''
          )     ,				)

      if subparsers is not None:
            parser.set_defaults(func=_SCREAMING_SNAKE_CASE				)
      return parser
def 							UpperCAmelCase__		(				_SCREAMING_SNAKE_CASE   :	Dict				)->str:
      _lowerCAmelCase 			=  get_user_input()
      if args.config_file is not None:
            _lowerCAmelCase 			=  args.config_file
      else:
            if not os.path.isdir(_SCREAMING_SNAKE_CASE				):
                  os.makedirs(_SCREAMING_SNAKE_CASE				)
            _lowerCAmelCase 			=  default_yaml_config_file

      if config_file.endswith('''.json'''				):
            config.to_json_file(_SCREAMING_SNAKE_CASE				)
      else:
            config.to_yaml_file(_SCREAMING_SNAKE_CASE				)
      print(f'''accelerate configuration saved at {config_file}'''				)
def 							UpperCAmelCase__		(				)->List[Any]:
      _lowerCAmelCase 			=  config_command_parser()
      _lowerCAmelCase 			=  parser.parse_args()
      config_command(_SCREAMING_SNAKE_CASE				)


if __name__ == "__main__":
    main()