





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        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase )			->     Union[str, Any]:  # picklable for multiprocessing
    return i + 1


@require_dill_gt_0_3_2
@require_joblibspark
@require_not_windows
def        SCREAMING_SNAKE_CASE      (       )			->     int:
    with parallel_backend('spark' ):
        assert ParallelBackendConfig.backend_name == "spark"

    lowerCamelCase__    :      Union[str, Any]					 =		[1, 2, 3]
    with pytest.raises(_UpperCAmelCase ):
        with parallel_backend('unsupported backend' ):
            map_nested(_UpperCAmelCase						,	_UpperCAmelCase						,	num_proc=2 )

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


@require_dill_gt_0_3_2
@require_joblibspark
@require_not_windows
@pytest.mark.parametrize('num_proc'						,	[2, -1] )
def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase )			->     Dict:
    lowerCamelCase__    :      Union[str, Any]					 =		[1, 2]
    lowerCamelCase__    :      str					 =		{'a': 1, 'b': 2}
    lowerCamelCase__    :      Optional[int]					 =		{'a': [1, 2], 'b': [3, 4]}
    lowerCamelCase__    :      Tuple					 =		{'a': {'1': 1}, 'b': 2}
    lowerCamelCase__    :      Dict					 =		{'a': 1, 'b': 2, 'c': 3, 'd': 4}
    lowerCamelCase__    :      str					 =		[2, 3]
    lowerCamelCase__    :      Tuple					 =		{'a': 2, 'b': 3}
    lowerCamelCase__    :      Optional[Any]					 =		{'a': [2, 3], 'b': [4, 5]}
    lowerCamelCase__    :      List[Any]					 =		{'a': {'1': 2}, 'b': 3}
    lowerCamelCase__    :      List[Any]					 =		{'a': 2, 'b': 3, 'c': 4, 'd': 5}

    with parallel_backend('spark' ):
        assert map_nested(_UpperCAmelCase						,	_UpperCAmelCase						,	num_proc=_UpperCAmelCase ) == expected_map_nested_sa
        assert map_nested(_UpperCAmelCase						,	_UpperCAmelCase						,	num_proc=_UpperCAmelCase ) == expected_map_nested_sa
        assert map_nested(_UpperCAmelCase						,	_UpperCAmelCase						,	num_proc=_UpperCAmelCase ) == expected_map_nested_sa
        assert map_nested(_UpperCAmelCase						,	_UpperCAmelCase						,	num_proc=_UpperCAmelCase ) == expected_map_nested_sa
        assert map_nested(_UpperCAmelCase						,	_UpperCAmelCase						,	num_proc=_UpperCAmelCase ) == expected_map_nested_sa












from __future__ import annotations


def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase						,	_UpperCAmelCase )			->     list[tuple[int, int]]:
    lowerCamelCase__ ,							lowerCamelCase__    :      Union[str, Any]					 =		position
    lowerCamelCase__    :      Optional[Any]					 =		[
        (y + 1, x + 2),
        (y - 1, x + 2),
        (y + 1, x - 2),
        (y - 1, x - 2),
        (y + 2, x + 1),
        (y + 2, x - 1),
        (y - 2, x + 1),
        (y - 2, x - 1),
    ]
    lowerCamelCase__    :      Dict					 =		[]

    for position in positions:
        lowerCamelCase__ ,							lowerCamelCase__    :      Optional[int]					 =		position
        if 0 <= y_test < n and 0 <= x_test < n:
            permissible_positions.append(_UpperCAmelCase )

    return permissible_positions


def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase )			->     bool:
    return not any(elem == 0 for row in board for elem in row )


def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase						,	_UpperCAmelCase						,	_UpperCAmelCase )			->     bool:

    if is_complete(_UpperCAmelCase ):
        return True

    for position in get_valid_pos(_UpperCAmelCase						,	len(_UpperCAmelCase ) ):
        lowerCamelCase__ ,							lowerCamelCase__    :      Optional[int]					 =		position

        if board[y][x] == 0:
            lowerCamelCase__    :      List[Any]					 =		curr + 1
            if open_knight_tour_helper(_UpperCAmelCase						,	_UpperCAmelCase						,	curr + 1 ):
                return True
            lowerCamelCase__    :      Optional[Any]					 =		0

    return False


def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase )			->     list[list[int]]:
    lowerCamelCase__    :      Any					 =		[[0 for i in range(_UpperCAmelCase )] for j in range(_UpperCAmelCase )]

    for i in range(_UpperCAmelCase ):
        for j in range(_UpperCAmelCase ):
            lowerCamelCase__    :      Optional[int]					 =		1
            if open_knight_tour_helper(_UpperCAmelCase						,	(i, j)						,	1 ):
                return board
            lowerCamelCase__    :      Optional[Any]					 =		0

    lowerCamelCase__    :      Any					 =		F"""Open Kight Tour cannot be performed on a board of size {n}"""
    raise ValueError(_UpperCAmelCase )


if __name__ == "__main__":
    import doctest

    doctest.testmod()





