



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
UpperCamelCase_									=   '''src/transformers'''

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


UpperCamelCase_									=   '''
{0} = None
'''

UpperCamelCase_									=   '''
class {0}(metaclass=DummyObject):
    _backends = {1}

    def __init__(self, *args, **kwargs):
        requires_backends(self, {1})
'''


UpperCamelCase_									=   '''
def {0}(*args, **kwargs):
    requires_backends({0}, {1})
'''







def       lowerCamelCase_  (    _a       :						str    ):



    '''simple docstring'''




    if _re_test_backend.search(_a    ) is None:
        return None
    UpperCAmelCase_     :       Union[str, Any]  		=					[b[0] for b in _re_backend.findall(_a    )]
    backends.sort()
    return "_and_".join(_a    )







def       lowerCamelCase_  (    ):



    '''simple docstring'''




    with open(os.path.join(_a   ,		"""__init__.py"""    )   ,		"""r"""   ,		encoding="""utf-8"""   ,		newline="""\n"""    ) as f:
        UpperCAmelCase_     :       List[Any]  		=					f.readlines()

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

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

            UpperCAmelCase_     :       Union[str, Any]  		=					[]
            # Until we unindent, add backend objects to the list
            while len(lines[line_index]    ) <= 1 or lines[line_index].startswith(""" """ * 8    ):
                UpperCAmelCase_     :       int  		=					lines[line_index]
                UpperCAmelCase_     :       Union[str, Any]  		=					_re_single_line_import.search(_a    )
                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

            UpperCAmelCase_     :       Union[str, Any]  		=					objects
        else:
            line_index += 1

    return backend_specific_objects







def       lowerCamelCase_  (    _a       :						Union[str, Any]   ,		_a       :						int    ):



    '''simple docstring'''




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







def       lowerCamelCase_  (    _a       :						Optional[int]=None    ):



    '''simple docstring'''




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

    for backend, objects in backend_specific_objects.items():
        UpperCAmelCase_     :       Union[str, Any]  		=					"""[""" + """, """.join(F'''"{b}"''' for b in backend.split("""_and_"""    )    ) + """]"""
        UpperCAmelCase_     :       List[Any]  		=					"""# 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(_a   ,		_a    ) for o in objects]    )
        UpperCAmelCase_     :       Optional[Any]  		=					dummy_file

    return dummy_files







def       lowerCamelCase_  (    _a       :						Optional[int]=False    ):



    '''simple docstring'''




    UpperCAmelCase_     :       Any  		=					create_dummy_files()
    # For special correspondence backend to shortcut as used in utils/dummy_xxx_objects.py
    UpperCAmelCase_     :       List[str]  		=					{"""torch""": """pt"""}

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

    UpperCAmelCase_     :       Optional[Any]  		=					{}
    for backend, file_path in dummy_file_paths.items():
        if os.path.isfile(_a    ):
            with open(_a   ,		"""r"""   ,		encoding="""utf-8"""   ,		newline="""\n"""    ) as f:
                UpperCAmelCase_     :       Dict  		=					f.read()
        else:
            UpperCAmelCase_     :       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(_a   ,		_a    )}_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(_a   ,		_a    )}_objects.py. Run `make fix-copies` '''
                    """to fix this."""    )


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

      check_dummies(args.fix_and_overwrite)


from __future__ import annotations

from queue import Queue


class 	UpperCamelCase__       :

						'''simple docstring'''



						def __init__(  self	)  ->None:
									UpperCAmelCase__		:dict[int, list[int]] 		=    {}


						def    A__       (  self	)  ->None:
									for i in self.vertices:
												print(A  , ' : '  , ' -> '.join([str(A	) for j in self.vertices[i]]	)	)


						def    A__       (  self  , A  , A	)  ->None:
									if from_vertex in self.vertices:
												self.vertices[from_vertex].append(A	)
									else:
												UpperCAmelCase__		:Union[str, Any] 		=    [to_vertex]


						def    A__       (  self  , A	)  ->set[int]:
									UpperCAmelCase__		:str 		=    set()

									# create a first in first out queue to store all the vertices for BFS
									UpperCAmelCase__		:Queue 		=    Queue()

									# mark the source node as visited and enqueue it
									visited.add(A	)
									queue.put(A	)

									while not queue.empty():
												UpperCAmelCase__		:List[str] 		=    queue.get()

												# loop through all adjacent vertex and enqueue it if not yet visited
												for adjacent_vertex in self.vertices[vertex]:
															if adjacent_vertex not in visited:
																		queue.put(A	)
																		visited.add(A	)
									return visited


if __name__ == "__main__":
						from doctest import testmod

						testmod(verbose=True)

						__snake_case					:							Any           =							Graph()
						g.add_edge(0, 1)
						g.add_edge(0, 2)
						g.add_edge(1, 2)
						g.add_edge(2, 0)
						g.add_edge(2, 3)
						g.add_edge(3, 3)

						g.print_graph()
						# 0  :  1 -> 2
						# 1  :  2
						# 2  :  0 -> 3
						# 3  :  3

						assert sorted(g.bfs(2)) == [0, 1, 2, 3]





