
def a__    (       A_,     A_ = False					):






  '''simple docstring'''





  if not isinstance(A_,     A_					):
    __magic_name__				     =       f'''Expected string as input, found {type(A_					)}'''
    raise ValueError(A_					)
  if not isinstance(A_,     A_					):
    __magic_name__				     =       f'''Expected boolean as use_pascal parameter, found {type(A_					)}'''
    raise ValueError(A_					)

  __magic_name__				     =       input_str.split("""_"""					)

  __magic_name__				     =       0 if use_pascal else 1

  __magic_name__				     =       words[start_index:]

  __magic_name__				     =       [word[0].upper() + word[1:] for word in words_to_capitalize]

  __magic_name__				     =       """""" if use_pascal else words[0]

  return "".join([initial_word, *capitalized_words]					)


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

    testmod()



from __future__ import annotations

from collections.abc import Iterator




class        UpperCAmelCase_			:


  '''simple docstring'''







  def __init__( self			: Dict			,							UpperCamelCase__			: int    )			->	None:







    """simple docstring"""






    __magic_name__				     =       value
    __magic_name__				     =       None
    __magic_name__				     =       None







class        UpperCAmelCase_			:


  '''simple docstring'''







  def __init__( self			: Union[str, Any]			,							UpperCamelCase__			: Node    )			->	None:







    """simple docstring"""






    __magic_name__				     =       tree
  def 							_lowercase							( self			: Optional[Any]			,							UpperCamelCase__			: Node | None    )			->	int:







    """simple docstring"""






    if node is None:
      return 0
    return node.value + (
        self.depth_first_search(node.left    ) + self.depth_first_search(node.right    )
    )





  def __iter__( self			: int    )			->	Iterator[int]:







    """simple docstring"""






    yield self.depth_first_search(self.tree    )


if __name__ == "__main__":
    import doctest

    doctest.testmod()

