



# Copyright 2022 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.

from pathlib import Path

from .config_args import default_config_file, load_config_from_file
from .config_utils import SubcommandHelpFormatter


A__       =			"""Update an existing config file with the latest defaults while maintaining the old configuration."""


def 						_UpperCAmelCase							( snake_case     ):





					"""simple docstring"""

					_lowerCAmelCase         =       args.config_file
					if config_file is None and Path(snake_case     ).exists():
										_lowerCAmelCase         =       default_config_file
					elif not Path(snake_case     ).exists():
										raise ValueError(F'The passed config file located at {config_file} doesn\'t exist.'     )
					_lowerCAmelCase         =       load_config_from_file(snake_case     )

					if config_file.endswith(""".json"""     ):
										config.to_json_file(snake_case     )
					else:
										config.to_yaml_file(snake_case     )
					return config_file


def 						_UpperCAmelCase							( snake_case      ,		snake_case     ):





					"""simple docstring"""

					_lowerCAmelCase         =       parser.add_parser("""update"""      ,		parents=snake_case      ,		help=snake_case      ,		formatter_class=snake_case     )
					parser.add_argument(
					    """--config_file"""      ,		default=snake_case      ,		help=(
					        """The path to the config file to update. 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'."""
					    )      ,		)

					parser.set_defaults(func=snake_case     )
					return parser


def 						_UpperCAmelCase							( snake_case     ):





					"""simple docstring"""

					_lowerCAmelCase         =       update_config(snake_case     )
					print(F'Sucessfully updated the configuration file at {config_file}.'     )








# A Bipartite Graph is a graph whose vertices can be divided into two independent sets,
# U and V such that every edge (u, v) either connects a vertex from U to V or a vertex
# from V to U. In other words, for every edge (u, v), either u belongs to U and v to V,
# or u belongs to V and v to U. We can also say that there is no edge that connects
# vertices of same set.
from queue import Queue


def 						_UpperCAmelCase							( snake_case     ):





					"""simple docstring"""

					_lowerCAmelCase         =       Queue()
					_lowerCAmelCase         =       [False] * len(snake_case     )
					_lowerCAmelCase         =       [-1] * len(snake_case     )

					def bfs():
										while not queue.empty():
															_lowerCAmelCase         =       queue.get()
															_lowerCAmelCase         =       True

															for neighbour in graph[u]:
																				if neighbour == u:
																									return False

																				if color[neighbour] == -1:
																									_lowerCAmelCase         =       1 - color[u]
																									queue.put(snake_case     )

																				elif color[neighbour] == color[u]:
																									return False

										return True

					for i in range(len(snake_case     )     ):
										if not visited[i]:
															queue.put(snake_case     )
															_lowerCAmelCase         =       0
															if bfs() is False:
																				return False

					return True


if __name__ == "__main__":
	# Adjacency List of graph
	print(check_bipartite({0: [1, 3], 1: [0, 2], 2: [1, 3], 3: [0, 2]}))



