



"""simple docstring"""






def   snake_case__     (	__lowerCamelCase       :					str							,	__lowerCamelCase       :					bool = False			):
			"""simple docstring"""

			if not isinstance(__lowerCamelCase							,	__lowerCamelCase			):
						lowerCamelCase__	:	Union[str, Any]				=f'''Expected string as input, found {type(__lowerCamelCase			)}'''
						raise ValueError(__lowerCamelCase			)
			if not isinstance(__lowerCamelCase							,	__lowerCamelCase			):
						lowerCamelCase__	:	Tuple				=f'''Expected boolean as use_pascal parameter, found {type(__lowerCamelCase			)}'''
						raise ValueError(__lowerCamelCase			)

			lowerCamelCase__	:	Union[str, Any]				=input_str.split('''_'''			)

			lowerCamelCase__	:	Union[str, Any]				=0 if use_pascal else 1

			lowerCamelCase__	:	Tuple				=words[start_index:]

			lowerCamelCase__	:	Optional[Any]				=[word[0].upper() + word[1:] for word in words_to_capitalize]

			lowerCamelCase__	:	Dict				='''''' if use_pascal else words[0]

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


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

		testmod()









"""simple docstring"""






from __future__ import annotations

from collections.abc import Iterator

class  __SCREAMING_SNAKE_CASE			:


					'''simple docstring'''





					def __init__( self							:						str,						lowerCamelCase							:						int  )->      None:
								lowerCamelCase__	:	str				=value
								lowerCamelCase__	:	Node | None				=None
								lowerCamelCase__	:	Node | None				=None





class  __SCREAMING_SNAKE_CASE			:


					'''simple docstring'''





					def __init__( self							:						int,						lowerCamelCase							:						Node  )->      None:
								lowerCamelCase__	:	Any				=tree



					def 	snake_case ( self							:						str,						lowerCamelCase							:						Node | None  )->      int:
								if node is None:
											return 0
								return node.value + (
								    self.depth_first_search(node.left  ) + self.depth_first_search(node.right  )
								)




					def __iter__( self							:						Dict  )->      Iterator[int]:
								yield self.depth_first_search(self.tree  )


if __name__ == "__main__":
		import doctest

		doctest.testmod()




