from __future__ import annotations

from collections.abc import Iterator

class       snake_case					:




		def __init__(      self     :	Union[str, Any]     , a_     :	int				)->       None:




							"""simple docstring"""
							SCREAMING_SNAKE_CASE__				:				Tuple			=		value
							SCREAMING_SNAKE_CASE__				:				Node | None			=		None
							SCREAMING_SNAKE_CASE__				:				Node | None			=		None




class       snake_case					:




		def __init__(      self     :	Any     , a_     :	Node				)->       None:




							"""simple docstring"""
							SCREAMING_SNAKE_CASE__				:				Union[str, Any]			=		tree




		def 	__lowercase(      self     :	List[str]     , a_     :	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     :	Any				)->       Iterator[int]:




							"""simple docstring"""
							yield self.depth_first_search(self.tree				)


if __name__ == "__main__":
						import doctest

						doctest.testmod()




from packaging import version

from .import_utils import is_accelerate_available


if is_accelerate_available():
      import accelerate







def     _a				(      lowercase__  :			List[str] ):







     '''simple docstring'''


     if not is_accelerate_available():
          return method
     SCREAMING_SNAKE_CASE__				:				str			=		version.parse(accelerate.__version__ ).base_version
     if version.parse(lowercase__ ) < version.parse('0.17.0' ):
          return method

     def wrapper(self  :			Optional[int]     ,  *lowercase__  :			int     ,  **lowercase__  :			Tuple ):
          if hasattr(self     ,  '_hf_hook' ) and hasattr(self._hf_hook     ,  'pre_forward' ):
               self._hf_hook.pre_forward(self )
          return method(self     ,  *lowercase__     ,  **lowercase__ )

     return wrapper



