


"""simple docstring"""
import pytest

from datasets.parallel import ParallelBackendConfig, parallel_backend
from datasets.utils.py_utils import map_nested

from .utils import require_dill_gt_0_3_2, require_joblibspark, require_not_windows







def   _a			( _SCREAMING_SNAKE_CASE			)      ->			Optional[int]:  # picklable for multiprocessing
							return i + 1







@require_dill_gt_0_3_2
@require_joblibspark
@require_not_windows
def   _a			( )      ->			Union[str, Any]:
							with parallel_backend("""spark"""			):
														assert ParallelBackendConfig.backend_name == "spark"

							snake_case_          =						[1, 2, 3]
							with pytest.raises(_SCREAMING_SNAKE_CASE			):
														with parallel_backend("""unsupported backend"""			):
																					map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=2			)

							with pytest.raises(_SCREAMING_SNAKE_CASE			):
														with parallel_backend("""unsupported backend"""			):
																					map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=-1			)







@require_dill_gt_0_3_2
@require_joblibspark
@require_not_windows
@pytest.mark.parametrize("""num_proc"""			,	[2, -1]			)
def   _a			( _SCREAMING_SNAKE_CASE			)      ->			List[str]:
							snake_case_          =						[1, 2]
							snake_case_          =						{"""a""": 1, """b""": 2}
							snake_case_          =						{"""a""": [1, 2], """b""": [3, 4]}
							snake_case_          =						{"""a""": {"""1""": 1}, """b""": 2}
							snake_case_          =						{"""a""": 1, """b""": 2, """c""": 3, """d""": 4}
							snake_case_          =						[2, 3]
							snake_case_          =						{"""a""": 2, """b""": 3}
							snake_case_          =						{"""a""": [2, 3], """b""": [4, 5]}
							snake_case_          =						{"""a""": {"""1""": 2}, """b""": 3}
							snake_case_          =						{"""a""": 2, """b""": 3, """c""": 4, """d""": 5}

							with parallel_backend("""spark"""			):
														assert map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=_SCREAMING_SNAKE_CASE			) == expected_map_nested_sa
														assert map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=_SCREAMING_SNAKE_CASE			) == expected_map_nested_sa
														assert map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=_SCREAMING_SNAKE_CASE			) == expected_map_nested_sa
														assert map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=_SCREAMING_SNAKE_CASE			) == expected_map_nested_sa
														assert map_nested(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	num_proc=_SCREAMING_SNAKE_CASE			) == expected_map_nested_sa










"""simple docstring"""
from __future__ import annotations

from collections.abc import Iterator





class        __A       :





							'''simple docstring'''

							def __init__(			self							: Any						,    UpperCAmelCase_							: int    )   ->None:



														"""simple docstring"""



														snake_case_          =						value
														snake_case_          =						None
														snake_case_          =						None





class        __A       :





							'''simple docstring'''

							def __init__(			self							: List[Any]						,    UpperCAmelCase_							: Node    )   ->None:



														"""simple docstring"""



														snake_case_          =						tree



							def 						lowerCAmelCase    (			self							: List[str]						,    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							: str    )   ->Iterator[int]:



														"""simple docstring"""



														yield self.depth_first_search(self.tree    )


if __name__ == "__main__":
				import doctest

				doctest.testmod()



