code: 
  
  
  # 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				(     UpperCAmelCase      )->		int:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					SCREAMING_SNAKE_CASE_	      =       args.config_file
  					if config_file is None and Path(UpperCAmelCase      ).exists():
  										SCREAMING_SNAKE_CASE_	      =       default_config_file
  					elif not Path(UpperCAmelCase      ).exists():
  										raise ValueError(f'''The passed config file located at {config_file} doesn\'t exist.'''      )
  					SCREAMING_SNAKE_CASE_	      =       load_config_from_file(UpperCAmelCase      )
  
  					if config_file.endswith('''.json'''      ):
  										config.to_json_file(UpperCAmelCase      )
  					else:
  										config.to_yaml_file(UpperCAmelCase      )
  					return config_file
  
  
  
  
  
  
  
  def 							UpperCAmelCase				(     UpperCAmelCase				,UpperCAmelCase      )->		Optional[int]:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					SCREAMING_SNAKE_CASE_	      =       parser.add_parser('''update'''				,parents=UpperCAmelCase				,help=UpperCAmelCase				,formatter_class=UpperCAmelCase      )
  					parser.add_argument(
  					    '''--config_file'''				,default=UpperCAmelCase				,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=UpperCAmelCase      )
  					return parser
  
  
  
  
  
  
  
  def 							UpperCAmelCase				(     UpperCAmelCase      )->		Tuple:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					SCREAMING_SNAKE_CASE_	      =       update_config(UpperCAmelCase      )
  					print(f'''Sucessfully updated the configuration file at {config_file}.'''      )
  
  
  
style_context: 
  
  
  def 							UpperCAmelCase				(     UpperCAmelCase				,UpperCAmelCase      )->		int:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					return (input_a, input_a).count(0      ) % 2
  
  
  
  
  
  
  
  def 							UpperCAmelCase				(     )->		None:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					assert xor_gate(0				,0      ) == 0
  					assert xor_gate(0				,1      ) == 1
  					assert xor_gate(1				,0      ) == 1
  					assert xor_gate(1				,1      ) == 0
  
  
  if __name__ == "__main__":
  		print(xor_gate(0, 0))
  		print(xor_gate(0, 1))
  
  
  