





import pytest

from datasets.utils.sharding import _distribute_shards, _number_of_shards_in_gen_kwargs, _split_gen_kwargs







@pytest.mark.parametrize(
    "kwargs, expected"			,   [
        ({"num_shards": 0, "max_num_jobs": 1}, []),
        ({"num_shards": 10, "max_num_jobs": 1}, [range(10     )]),
        ({"num_shards": 10, "max_num_jobs": 10}, [range(_lowerCamelCase			,   i + 1     ) for i in range(10     )]),
        ({"num_shards": 1, "max_num_jobs": 10}, [range(1     )]),
        ({"num_shards": 10, "max_num_jobs": 3}, [range(0			,   4     ), range(4			,   7     ), range(7			,   10     )]),
        ({"num_shards": 3, "max_num_jobs": 10}, [range(0			,   1     ), range(1			,   2     ), range(2			,   3     )]),
    ]			,   )
def       UpperCAmelCase							(     _lowerCamelCase      :  Any			,   _lowerCamelCase      :  Any     ):





						'''simple docstring'''


						SCREAMING_SNAKE_CASE__     :				str   =					_distribute_shards(**_lowerCamelCase     )
						assert out == expected







@pytest.mark.parametrize(
    "gen_kwargs, max_num_jobs, expected"			,   [
        ({"foo": 0}, 10, [{"foo": 0}]),
        ({"shards": [0, 1, 2, 3]}, 1, [{"shards": [0, 1, 2, 3]}]),
        ({"shards": [0, 1, 2, 3]}, 4, [{"shards": [0]}, {"shards": [1]}, {"shards": [2]}, {"shards": [3]}]),
        ({"shards": [0, 1]}, 4, [{"shards": [0]}, {"shards": [1]}]),
        ({"shards": [0, 1, 2, 3]}, 2, [{"shards": [0, 1]}, {"shards": [2, 3]}]),
    ]			,   )
def       UpperCAmelCase							(     _lowerCamelCase      :  Optional[int]			,   _lowerCamelCase      :  Optional[Any]			,   _lowerCamelCase      :  str     ):





						'''simple docstring'''


						SCREAMING_SNAKE_CASE__     :				str   =					_split_gen_kwargs(_lowerCamelCase			,   _lowerCamelCase     )
						assert out == expected







@pytest.mark.parametrize(
    "gen_kwargs, expected"			,   [
        ({"foo": 0}, 1),
        ({"shards": [0]}, 1),
        ({"shards": [0, 1, 2, 3]}, 4),
        ({"shards": [0, 1, 2, 3], "foo": 0}, 4),
        ({"shards": [0, 1, 2, 3], "other": (0, 1)}, 4),
        ({"shards": [0, 1, 2, 3], "shards2": [0, 1]}, RuntimeError),
    ]			,   )
def       UpperCAmelCase							(     _lowerCamelCase      :  Tuple			,   _lowerCamelCase      :  Dict     ):





						'''simple docstring'''


						if expected is RuntimeError:
												with pytest.raises(_lowerCamelCase     ):
																		_number_of_shards_in_gen_kwargs(_lowerCamelCase     )
						else:
												SCREAMING_SNAKE_CASE__     :				Dict   =					_number_of_shards_in_gen_kwargs(_lowerCamelCase     )
												assert out == expected






from __future__ import annotations







def       UpperCAmelCase							(     _lowerCamelCase      :  list[int | float]			,   _lowerCamelCase      :  int			,   _lowerCamelCase      :  int     ):





						'''simple docstring'''


						if len(_lowerCamelCase     ) == 0:
												raise ValueError("find_max() arg is an empty sequence"     )
						if (
						    left >= len(_lowerCamelCase     )
						    or left < -len(_lowerCamelCase     )
						    or right >= len(_lowerCamelCase     )
						    or right < -len(_lowerCamelCase     )
						):
												raise IndexError("list index out of range"     )
						if left == right:
												return nums[left]
						SCREAMING_SNAKE_CASE__     :				Optional[int]   =					(left + right) >> 1  # the middle
						SCREAMING_SNAKE_CASE__     :				List[Any]   =					find_max(_lowerCamelCase			,   _lowerCamelCase			,   _lowerCamelCase     )  # find max in range[left, mid]
						SCREAMING_SNAKE_CASE__     :				Optional[int]   =					find_max(_lowerCamelCase			,   mid + 1			,   _lowerCamelCase     )  # find max in range[mid + 1, right]

						return left_max if left_max >= right_max else right_max


if __name__ == "__main__":
				import doctest

				doctest.testmod(verbose=True)