





import logging
import os
from logging import (
    CRITICAL,  # NOQA
    DEBUG,  # NOQA
    ERROR,  # NOQA
    FATAL,  # NOQA
    INFO,  # NOQA
    NOTSET,  # NOQA
    WARN,  # NOQA
    WARNING,  # NOQA
)
from typing import Optional

from tqdm import auto as tqdm_lib


lowercase    : Any    	=  {
    'debug': logging.DEBUG,
    'info': logging.INFO,
    'warning': logging.WARNING,
    'error': logging.ERROR,
    'critical': logging.CRITICAL,
}

lowercase    : Tuple    	=  logging.WARNING


def     SCREAMING_SNAKE_CASE			(      ):
       _UpperCamelCase              =						os.getenv('''DATASETS_VERBOSITY'''    ,       _lowercase					)
       if env_level_str:
              if env_level_str in log_levels:
                     return log_levels[env_level_str]
              else:
                     logging.getLogger().warning(
                         f'''Unknown option DATASETS_VERBOSITY={env_level_str}, '''
                         f'''has to be one of: { ", ".join(log_levels.keys()					) }'''					)
       return _default_log_level


def     SCREAMING_SNAKE_CASE			(      ):
       return __name__.split('''.'''					)[0]


def     SCREAMING_SNAKE_CASE			(      ):
       return logging.getLogger(_get_library_name()					)


def     SCREAMING_SNAKE_CASE			(      ):
       # Apply our default configuration to the library root logger.
       _UpperCamelCase              =						_get_library_root_logger()
       library_root_logger.setLevel(_get_default_logging_level()					)


def     SCREAMING_SNAKE_CASE			(      ):
       _UpperCamelCase              =						_get_library_root_logger()
       library_root_logger.setLevel(logging.NOTSET					)


def     SCREAMING_SNAKE_CASE			(      lowerCAmelCase = None					):
       if name is None:
              _UpperCamelCase              =						_get_library_name()
       return logging.getLogger(_lowercase					)


def     SCREAMING_SNAKE_CASE			(      ):
       return _get_library_root_logger().getEffectiveLevel()


def     SCREAMING_SNAKE_CASE			(      lowerCAmelCase					):
       _get_library_root_logger().setLevel(_lowercase					)


def     SCREAMING_SNAKE_CASE			(      ):
       return set_verbosity(_lowercase					)


def     SCREAMING_SNAKE_CASE			(      ):
       return set_verbosity(_lowercase					)


def     SCREAMING_SNAKE_CASE			(      ):
       return set_verbosity(_lowercase					)


def     SCREAMING_SNAKE_CASE			(      ):
       return set_verbosity(_lowercase					)


def     SCREAMING_SNAKE_CASE			(      ):
       _UpperCamelCase              =						False


def     SCREAMING_SNAKE_CASE			(      ):
       _UpperCamelCase              =						True


# Configure the library root logger at the module level (singleton-like)
_configure_library_root_logger()

class  __A:

     def __init__(      self,       *A,       **A      ):  # pylint: disable=unused-argument





            """simple docstring"""

            _UpperCamelCase              =						args[0] if args else None

     def __iter__(      self      ):





            """simple docstring"""

            return iter(self._iterator      )

     def __getattr__(      self,       A      ):





            """simple docstring"""

            def empty_fn(*A,       **A      ):  # pylint: disable=unused-argument
                   return

            return empty_fn

     def __enter__(      self      ):





            """simple docstring"""

            return self



     def __exit__(      self,       A,       A,       A      ):





            """simple docstring"""

            return






lowercase    : Optional[int]    	=  True

class  __A:

     def __call__(      self,       *A,       A=False,       **A      ):





            """simple docstring"""

            if _tqdm_active and not disable:
                   return tqdm_lib.tqdm(*UpperCamelCase__,       **UpperCamelCase__      )
            else:
                   return EmptyTqdm(*UpperCamelCase__,       **UpperCamelCase__      )

     def 	_UpperCamelCase     (      self,       *A,       **A      ):





            """simple docstring"""

            _UpperCamelCase              =						None
            if _tqdm_active:
                   return tqdm_lib.tqdm.set_lock(*UpperCamelCase__,       **UpperCamelCase__      )



     def 	_UpperCamelCase     (      self      ):





            """simple docstring"""

            if _tqdm_active:
                   return tqdm_lib.tqdm.get_lock()






lowercase    : Union[str, Any]    	=  _tqdm_cls()


def     SCREAMING_SNAKE_CASE			(      ):
       global _tqdm_active
       return bool(_tqdm_active					)


def     SCREAMING_SNAKE_CASE			(      ):
       global _tqdm_active
       _UpperCamelCase              =						True


def     SCREAMING_SNAKE_CASE			(      ):
       global _tqdm_active
       _UpperCamelCase              =						False













from __future__ import annotations

lowercase    : int    	=  {
    """A""": ["""B""", """C""", """E"""],
    """B""": ["""A""", """D""", """E"""],
    """C""": ["""A""", """F""", """G"""],
    """D""": ["""B"""],
    """E""": ["""A""", """B""", """D"""],
    """F""": ["""C"""],
    """G""": ["""C"""],
}

class  __A:

     def __init__(      self,       A,       A      ):





            """simple docstring"""

            _UpperCamelCase              =						graph
            # mapping node to its parent in resulting breadth first tree
            _UpperCamelCase              =						{}
            _UpperCamelCase              =						source_vertex

     def 	_UpperCamelCase     (      self      ):





            """simple docstring"""

            _UpperCamelCase              =						{self.source_vertex}
            _UpperCamelCase              =						None
            _UpperCamelCase              =						[self.source_vertex]  # first in first out queue

            while queue:
                   _UpperCamelCase              =						queue.pop(0      )
                   for adjacent_vertex in self.graph[vertex]:
                          if adjacent_vertex not in visited:
                                 visited.add(A      )
                                 _UpperCamelCase              =						vertex
                                 queue.append(A      )



     def 	_UpperCamelCase     (      self,       A      ):





            """simple docstring"""

            if target_vertex == self.source_vertex:
                   return self.source_vertex

            _UpperCamelCase              =						self.parent.get(A      )
            if target_vertex_parent is None:
                   _UpperCamelCase              =						(
                       F'''No path from vertex: {self.source_vertex} to vertex: {target_vertex}'''
                   )
                   raise ValueError(A      )

            return self.shortest_path(A      ) + F'''->{target_vertex}'''


if __name__ == "__main__":
       lowercase    : Tuple    	=  Graph(graph, """G""")
       g.breath_first_search()
       print(g.shortest_path("""D"""))
       print(g.shortest_path("""G"""))
       print(g.shortest_path("""Foo"""))






