






from __future__ import annotations

from queue import Queue





class   SCREAMING_SNAKE_CASE :





							"""simple docstring"""

							def __init__(     self:      Union[str, Any]      )			-> None:
												_A									=       {}

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

							def 					__A       (     self:      Optional[int]						,   __A:      int						,   __A:      int      )			-> None:
												if from_vertex in self.vertices:
																	self.vertices[from_vertex].append(__A      )
												else:
																	_A									=       [to_vertex]



							def 					__A       (     self:      Any						,   __A:      int      )			-> set[int]:
												_A									=       set()

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

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

												while not queue.empty():
																	_A									=       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)

				__A          = 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]





'''simple docstring'''



from ..utils import DummyObject, requires_backends

class       _a (metaclass=_lowerCamelCase):





       """simple docstring"""




       SCREAMING_SNAKE_CASE					=     ['torch', 'librosa']






       def __init__(							self				,							*A__				,							**A__					)			->	str:
          requires_backends(self				,							["""torch""", """librosa"""]					)






       @classmethod
       def 				UpperCamelCase (							cls				,							*A__				,							**A__					)			->	Tuple:
          requires_backends(cls				,							["""torch""", """librosa"""]					)






       @classmethod
       def 				UpperCamelCase (							cls				,							*A__				,							**A__					)			->	Optional[Any]:
          requires_backends(cls				,							["""torch""", """librosa"""]					)






class       _a (metaclass=_lowerCamelCase):





       """simple docstring"""




       SCREAMING_SNAKE_CASE					=     ['torch', 'librosa']






       def __init__(							self				,							*A__				,							**A__					)			->	Dict:
          requires_backends(self				,							["""torch""", """librosa"""]					)






       @classmethod
       def 				UpperCamelCase (							cls				,							*A__				,							**A__					)			->	Optional[Any]:
          requires_backends(cls				,							["""torch""", """librosa"""]					)






       @classmethod
       def 				UpperCamelCase (							cls				,							*A__				,							**A__					)			->	Union[str, Any]:
          requires_backends(cls				,							["""torch""", """librosa"""]					)






