



'''simple docstring'''

from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_tf_available,
    is_tokenizers_available,
    is_torch_available,
)


__lowerCAmelCase									=   {
    '''configuration_funnel''': ['''FUNNEL_PRETRAINED_CONFIG_ARCHIVE_MAP''', '''FunnelConfig'''],
    '''convert_funnel_original_tf_checkpoint_to_pytorch''': [],
    '''tokenization_funnel''': ['''FunnelTokenizer'''],
}

try:
							if not is_tokenizers_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							__lowerCAmelCase									=   ['''FunnelTokenizerFast''']

try:
							if not is_torch_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							__lowerCAmelCase									=   [
							    '''FUNNEL_PRETRAINED_MODEL_ARCHIVE_LIST''',
							    '''FunnelBaseModel''',
							    '''FunnelForMaskedLM''',
							    '''FunnelForMultipleChoice''',
							    '''FunnelForPreTraining''',
							    '''FunnelForQuestionAnswering''',
							    '''FunnelForSequenceClassification''',
							    '''FunnelForTokenClassification''',
							    '''FunnelModel''',
							    '''FunnelPreTrainedModel''',
							    '''load_tf_weights_in_funnel''',
							]

try:
							if not is_tf_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							__lowerCAmelCase									=   [
							    '''TF_FUNNEL_PRETRAINED_MODEL_ARCHIVE_LIST''',
							    '''TFFunnelBaseModel''',
							    '''TFFunnelForMaskedLM''',
							    '''TFFunnelForMultipleChoice''',
							    '''TFFunnelForPreTraining''',
							    '''TFFunnelForQuestionAnswering''',
							    '''TFFunnelForSequenceClassification''',
							    '''TFFunnelForTokenClassification''',
							    '''TFFunnelModel''',
							    '''TFFunnelPreTrainedModel''',
							]


if TYPE_CHECKING:
							from .configuration_funnel import FUNNEL_PRETRAINED_CONFIG_ARCHIVE_MAP, FunnelConfig
							from .tokenization_funnel import FunnelTokenizer

							try:
														if not is_tokenizers_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .tokenization_funnel_fast import FunnelTokenizerFast

							try:
														if not is_torch_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_funnel import (
														    FUNNEL_PRETRAINED_MODEL_ARCHIVE_LIST,
														    FunnelBaseModel,
														    FunnelForMaskedLM,
														    FunnelForMultipleChoice,
														    FunnelForPreTraining,
														    FunnelForQuestionAnswering,
														    FunnelForSequenceClassification,
														    FunnelForTokenClassification,
														    FunnelModel,
														    FunnelPreTrainedModel,
														    load_tf_weights_in_funnel,
														)

							try:
														if not is_tf_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_tf_funnel import (
														    TF_FUNNEL_PRETRAINED_MODEL_ARCHIVE_LIST,
														    TFFunnelBaseModel,
														    TFFunnelForMaskedLM,
														    TFFunnelForMultipleChoice,
														    TFFunnelForPreTraining,
														    TFFunnelForQuestionAnswering,
														    TFFunnelForSequenceClassification,
														    TFFunnelForTokenClassification,
														    TFFunnelModel,
														    TFFunnelPreTrainedModel,
														)

else:
							import sys

							__lowerCAmelCase									=   _LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)









'''simple docstring'''

__lowerCAmelCase									=   {
    '''A''': ['''B''', '''C''', '''E'''],
    '''B''': ['''A''', '''D''', '''E'''],
    '''C''': ['''A''', '''F''', '''G'''],
    '''D''': ['''B'''],
    '''E''': ['''A''', '''B''', '''D'''],
    '''F''': ['''C'''],
    '''G''': ['''C'''],
}



def      __lowerCamelCase     (      lowerCAmelCase_						,			lowerCAmelCase_						,			lowerCAmelCase_  )			->      list[str]:
		_a     :      List[Any]        =							set()
		# keep track of all the paths to be checked
		_a     :      Any        =							[[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
				_a     :      Tuple        =							queue.pop(0  )
				# get the last node from the path
				_a     :      Tuple        =							path[-1]
				if node not in explored:
						_a     :      Optional[Any]        =							graph[node]
						# go through all neighbour nodes, construct a new path and
						# push it into the queue
						for neighbour in neighbours:
								_a     :      Any        =							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      __lowerCamelCase     (      lowerCAmelCase_						,			lowerCAmelCase_						,			lowerCAmelCase_  )			->      int:
		if not graph or start not in graph or target not in graph:
				return -1
		if start == target:
				return 0
		_a     :      Optional[int]        =							[start]
		_a     :      Dict        =							set(lowerCAmelCase_  )
		# Keep tab on distances from `start` node.
		_a     :      Dict        =							{start: 0, target: -1}
		while queue:
				_a     :      List[str]        =							queue.pop(0  )
				if node == target:
						_a     :      Any        =							(
						    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_  )
								_a     :      Any        =							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




