



'''simple docstring'''






from __future__ import annotations

from collections.abc import Iterator



class 							lowercase       :


 """simple docstring"""


 def __init__(							self  ,a_							)		->   None:
        _UpperCAmelCase  :						Optional[int]			     = value
        _UpperCAmelCase  :						Node | None			     = None
        _UpperCAmelCase  :						Node | None			     = None







class 							lowercase       :


 """simple docstring"""


 def __init__(							self  ,a_							)		->   None:
        _UpperCAmelCase  :						str			     = tree







 def _snake_case (							self  ,a_							)		->   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							)		->   Iterator[int]:
        yield self.depth_first_search(self.tree							)


if __name__ == "__main__":
   import doctest

   doctest.testmod()











# flake8: noqa
# Lint as: python3
lowerCamelCase       :       Optional[Any]        =				[
    '''VerificationMode''',
    '''Version''',
    '''disable_progress_bar''',
    '''enable_progress_bar''',
    '''is_progress_bar_enabled''',
    '''experimental''',
]

from .info_utils import VerificationMode
from .logging import disable_progress_bar, enable_progress_bar, is_progress_bar_enabled
from .version import Version
from .experimental import experimental