




"""simple docstring"""




import argparse
import os
import re


# All paths are set with the intent you should run this script from the root of the repo with the command
# python utils/check_dummies.py
a_            =   'src/transformers'

# Matches is_xxx_available()
a_            =   re.compile(r'is\_([a-z_]*)_available()')
# Matches from xxx import bla
a_            =   re.compile(r'\s+from\s+\S*\s+import\s+([^\(\s].*)\n')
a_            =   re.compile(r'^\s+if\s+not\s+\(?is\_[a-z_]*\_available\(\)')


a_            =   '\n{0} = None\n'

a_            =   '\nclass {0}(metaclass=DummyObject):\n    _backends = {1}\n\n    def __init__(self, *args, **kwargs):\n        requires_backends(self, {1})\n'


a_            =   '\ndef {0}(*args, **kwargs):\n    requires_backends({0}, {1})\n'







def       __UpperCAmelCase      (				__UpperCamelCase					):
			if _re_test_backend.search(__UpperCamelCase					) is None:
						return None
			__lowercase	:       List[str]				=   [b[0] for b in _re_backend.findall(__UpperCamelCase					)]
			backends.sort()
			return "_and_".join(__UpperCamelCase					)







def       __UpperCAmelCase      (				):
			with open(os.path.join(__UpperCamelCase					,							'''__init__.py'''					)					,							'''r'''					,							encoding='''utf-8'''					,							newline='''\n'''					) as f:
						__lowercase	:       Optional[int]				=   f.readlines()

			# Get to the point we do the actual imports for type checking
			__lowercase	:       Tuple				=   0
			while not lines[line_index].startswith('''if TYPE_CHECKING'''					):
						line_index += 1

			__lowercase	:       List[Any]				=   {}
			# Go through the end of the file
			while line_index < len(__UpperCamelCase					):
						# If the line is an if is_backend_available, we grab all objects associated.
						__lowercase	:       Optional[int]				=   find_backend(lines[line_index]					)
						if backend is not None:
									while not lines[line_index].startswith('''    else:'''					):
												line_index += 1
									line_index += 1

									__lowercase	:       Tuple				=   []
									# Until we unindent, add backend objects to the list
									while len(lines[line_index]					) <= 1 or lines[line_index].startswith(''' ''' * 8					):
												__lowercase	:       Dict				=   lines[line_index]
												__lowercase	:       Union[str, Any]				=   _re_single_line_import.search(__UpperCamelCase					)
												if single_line_import_search is not None:
															objects.extend(single_line_import_search.groups()[0].split(''', '''					)					)
												elif line.startswith(''' ''' * 12					):
															objects.append(line[12:-2]					)
												line_index += 1

									__lowercase	:       int				=   objects
						else:
									line_index += 1

			return backend_specific_objects







def       __UpperCAmelCase      (				__UpperCamelCase					,							__UpperCamelCase					):
			if name.isupper():
						return DUMMY_CONSTANT.format(__UpperCamelCase					)
			elif name.islower():
						return DUMMY_FUNCTION.format(__UpperCamelCase					,							__UpperCamelCase					)
			else:
						return DUMMY_CLASS.format(__UpperCamelCase					,							__UpperCamelCase					)







def       __UpperCAmelCase      (				__UpperCamelCase=None					):
			if backend_specific_objects is None:
						__lowercase	:       List[str]				=   read_init()
			# For special correspondence backend to module name as used in the function requires_modulename
			__lowercase	:       List[Any]				=   {}

			for backend, objects in backend_specific_objects.items():
						__lowercase	:       Union[str, Any]				=   '''[''' + ''', '''.join(f"""\"{b}\"""" for b in backend.split('''_and_'''					)					) + ''']'''
						__lowercase	:       Optional[int]				=   '''# This file is autogenerated by the command `make fix-copies`, do not edit.\n'''
						dummy_file += "from ..utils import DummyObject, requires_backends\n\n"
						dummy_file += "\n".join([create_dummy_object(__UpperCamelCase					,							__UpperCamelCase					) for o in objects]					)
						__lowercase	:       Optional[int]				=   dummy_file

			return dummy_files







def       __UpperCAmelCase      (				__UpperCamelCase=False					):
			__lowercase	:       Tuple				=   create_dummy_files()
			# For special correspondence backend to shortcut as used in utils/dummy_xxx_objects.py
			__lowercase	:       Tuple				=   {'''torch''': '''pt'''}

			# Locate actual dummy modules and read their content.
			__lowercase	:       List[Any]				=   os.path.join(__UpperCamelCase					,							'''utils'''					)
			__lowercase	:       Any				=   {
			    backend: os.path.join(__UpperCamelCase					,							f"""dummy_{short_names.get(__UpperCamelCase					,							__UpperCamelCase					)}_objects.py"""					)
			    for backend in dummy_files.keys()
			}

			__lowercase	:       Optional[Any]				=   {}
			for backend, file_path in dummy_file_paths.items():
						if os.path.isfile(__UpperCamelCase					):
									with open(__UpperCamelCase					,							'''r'''					,							encoding='''utf-8'''					,							newline='''\n'''					) as f:
												__lowercase	:       Any				=   f.read()
						else:
									__lowercase	:       Union[str, Any]				=   ''''''

			for backend in dummy_files.keys():
						if dummy_files[backend] != actual_dummies[backend]:
									if overwrite:
												print(
												    f"""Updating transformers.utils.dummy_{short_names.get(__UpperCamelCase					,							__UpperCamelCase					)}_objects.py as the main """
												    '''__init__ has new objects.'''					)
												with open(dummy_file_paths[backend]					,							'''w'''					,							encoding='''utf-8'''					,							newline='''\n'''					) as f:
															f.write(dummy_files[backend]					)
									else:
												raise ValueError(
												    '''The main __init__ has objects that are not present in '''
												    f"""transformers.utils.dummy_{short_names.get(__UpperCamelCase					,							__UpperCamelCase					)}_objects.py. Run `make fix-copies` """
												    '''to fix this.'''					)


if __name__ == "__main__":
			a_            =   argparse.ArgumentParser()
			parser.add_argument('--fix_and_overwrite', action='store_true', help='Whether to fix inconsistencies.')
			a_            =   parser.parse_args()

			check_dummies(args.fix_and_overwrite)









"""simple docstring"""




# 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      (				__UpperCamelCase					):
			__lowercase	:       int				=   Queue()
			__lowercase	:       str				=   [False] * len(__UpperCamelCase					)
			__lowercase	:       str				=   [-1] * len(__UpperCamelCase					)

			def bfs():
						while not queue.empty():
									__lowercase	:       int				=   queue.get()
									__lowercase	:       List[str]				=   True

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

												if color[neighbour] == -1:
															__lowercase	:       str				=   1 - color[u]
															queue.put(__UpperCamelCase					)

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

						return True

			for i in range(len(__UpperCamelCase					)					):
						if not visited[i]:
									queue.put(__UpperCamelCase					)
									__lowercase	:       int				=   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]}))



