
"""simple docstring"""
SCREAMING_SNAKE_CASE_					     =	{
    '''A''': ['''B''', '''C''', '''E'''],
    '''B''': ['''A''', '''D''', '''E'''],
    '''C''': ['''A''', '''F''', '''G'''],
    '''D''': ['''B'''],
    '''E''': ['''A''', '''B''', '''D'''],
    '''F''': ['''C'''],
    '''G''': ['''C'''],
}

def  lowercase     (_lowerCAmelCase ,    _lowerCAmelCase ,    _lowerCAmelCase						):
						__lowerCAmelCase     =  set()
						# keep track of all the paths to be checked
						__lowerCAmelCase     =  [[start]]

						# return path if start is goal
						if start == goal:
												return [start]

						# keeps looping until all possible paths have been checked
						while queue:
												# pop the first path from the queue
												__lowerCAmelCase     =  queue.pop(0						)
												# get the last node from the path
												__lowerCAmelCase     =  path[-1]
												if node not in explored:
																		__lowerCAmelCase     =  graph[node]
																		# go through all neighbour nodes, construct a new path and
																		# push it into the queue
																		for neighbour in neighbours:
																								__lowerCAmelCase     =  list(_lowerCAmelCase						)
																								new_path.append(_lowerCAmelCase						)
																								queue.append(_lowerCAmelCase						)
																								# return path if neighbour is goal
																								if neighbour == goal:
																														return new_path

            # mark node as explored
																		explored.add(_lowerCAmelCase						)

    # in case there's no path between the 2 nodes
						return []

def  lowercase     (_lowerCAmelCase ,    _lowerCAmelCase ,    _lowerCAmelCase						):
						if not graph or start not in graph or target not in graph:
												return -1
						if start == target:
												return 0
						__lowerCAmelCase     =  [start]
						__lowerCAmelCase     =  set(_lowerCAmelCase						)
						# Keep tab on distances from `start` node.
						__lowerCAmelCase     =  {start: 0, target: -1}
						while queue:
												__lowerCAmelCase     =  queue.pop(0						)
												if node == target:
																		__lowerCAmelCase     =  (
																		    dist[node] if dist[target] == -1 else min(dist[target] ,    dist[node]						)
																		)
												for adjacent in graph[node]:
																		if adjacent not in visited:
																								visited.add(_lowerCAmelCase						)
																								queue.append(_lowerCAmelCase						)
																								__lowerCAmelCase     =  dist[node] + 1
						return dist[target]


if __name__ == "__main__":
			print(bfs_shortest_path(demo_graph, '''G''', '''D'''))  # returns ['G', 'C', 'A', 'B', 'D']
			print(bfs_shortest_path_distance(demo_graph, '''G''', '''D'''))  # returns 4


"""simple docstring"""
from typing import List

from .keymap import KEYMAP, get_character

def  lowercase     (_lowerCAmelCase						):

						def decorator(_lowerCAmelCase						):
												__lowerCAmelCase     =  getattr(_lowerCAmelCase ,    """handle_key""" ,    []						)
												handle += [key]
												setattr(_lowerCAmelCase ,    """handle_key""" ,    _lowerCAmelCase						)
												return func

						return decorator

def  lowercase     (*_lowerCAmelCase						):

						def decorator(_lowerCAmelCase						):
												__lowerCAmelCase     =  getattr(_lowerCAmelCase ,    """handle_key""" ,    []						)
												handle += keys
												setattr(_lowerCAmelCase ,    """handle_key""" ,    _lowerCAmelCase						)
												return func

						return decorator
class       lowerCAmelCase_		(				A__ ):



							'''simple docstring'''





							def __new__( cls    ,				snake_case_    ,				snake_case_    ,				snake_case_				)       ->  Any:
													__lowerCAmelCase     =  super().__new__(cls    ,				snake_case_    ,				snake_case_    ,				snake_case_				)
													if not hasattr(snake_case_    ,				"""key_handler"""				):
																			setattr(snake_case_    ,				"""key_handler"""    ,				{}				)
													setattr(snake_case_    ,				"""handle_input"""    ,				KeyHandler.handle_input				)

													for value in attrs.values():
																			__lowerCAmelCase     =  getattr(snake_case_    ,				"""handle_key"""    ,				[]				)
																			for key in handled_keys:
																									__lowerCAmelCase     =  value
													return new_cls




							@staticmethod
							def    A__						( cls				)       ->  Tuple:
													__lowerCAmelCase     =  get_character()
													if char != KEYMAP["undefined"]:
																			__lowerCAmelCase     =  ord(snake_case_				)
													__lowerCAmelCase     =  cls.key_handler.get(snake_case_				)
													if handler:
																			__lowerCAmelCase     =  char
																			return handler(cls				)
													else:
																			return None

def  lowercase     (cls						):
						return KeyHandler(cls.__name__ ,    cls.__bases__ ,    cls.__dict__.copy()						)
