'''simple docstring'''
import contextlib
import os
import sqlitea

import pytest

from datasets import Dataset, Features, Value
from datasets.io.sql import SqlDatasetReader, SqlDatasetWriter

from ..utils import assert_arrow_memory_doesnt_increase, assert_arrow_memory_increases, require_sqlalchemy



def  __lowerCamelCase       (      _UpperCamelCase  :  Optional[Any]							,    _UpperCamelCase  :  Union[str, Any]					):


      '''simple docstring'''


      assert isinstance(__lowerCAmelCase							,    __lowerCAmelCase					)
      assert dataset.num_rows == 4
      assert dataset.num_columns == 3
      assert dataset.column_names == ["col_1", "col_2", "col_3"]
      for feature, expected_dtype in expected_features.items():
            assert dataset.features[feature].dtype == expected_dtype



@require_sqlalchemy
@pytest.mark.parametrize('''keep_in_memory'''							,    [False, True]					)
def  __lowerCamelCase       (      _UpperCamelCase  :  Any							,    _UpperCamelCase  :  Any							,    _UpperCamelCase  :  List[Any]							,    _UpperCamelCase  :  Dict					):


      '''simple docstring'''


      UpperCAmelCase_            =  tmp_path / """cache"""
      UpperCAmelCase_            =  {"""col_1""": """string""", """col_2""": """int64""", """col_3""": """float64"""}
      with assert_arrow_memory_increases() if keep_in_memory else assert_arrow_memory_doesnt_increase():
            UpperCAmelCase_            =  SqlDatasetReader(
                '''dataset'''							,    '''sqlite:///''' + sqlite_path							,    cache_dir=__lowerCAmelCase							,    keep_in_memory=__lowerCAmelCase					).read()
      _check_sql_dataset(__lowerCAmelCase							,    __lowerCAmelCase					)



@require_sqlalchemy
@pytest.mark.parametrize(
    '''features'''							,    [
        None,
        {'''col_1''': '''string''', '''col_2''': '''int64''', '''col_3''': '''float64'''},
        {'''col_1''': '''string''', '''col_2''': '''string''', '''col_3''': '''string'''},
        {'''col_1''': '''int32''', '''col_2''': '''int32''', '''col_3''': '''int32'''},
        {'''col_1''': '''float32''', '''col_2''': '''float32''', '''col_3''': '''float32'''},
    ]							,    )
def  __lowerCamelCase       (      _UpperCamelCase  :  List[str]							,    _UpperCamelCase  :  List[Any]							,    _UpperCamelCase  :  int							,    _UpperCamelCase  :  int					):


      '''simple docstring'''


      UpperCAmelCase_            =  tmp_path / """cache"""
      UpperCAmelCase_            =  {"""col_1""": """string""", """col_2""": """int64""", """col_3""": """float64"""}
      UpperCAmelCase_            =  features.copy() if features else default_expected_features
      UpperCAmelCase_            =  (
          Features({feature: Value(__lowerCAmelCase					) for feature, dtype in features.items()}					) if features is not None else None
      )
      UpperCAmelCase_            =  SqlDatasetReader('''dataset'''							,    '''sqlite:///''' + sqlite_path							,    features=__lowerCAmelCase							,    cache_dir=__lowerCAmelCase					).read()
      _check_sql_dataset(__lowerCAmelCase							,    __lowerCAmelCase					)



def  __lowerCamelCase       (      _UpperCamelCase  :  Dict					):


      '''simple docstring'''


      with contextlib.closing(sqlitea.connect(__lowerCAmelCase					)					) as con:
            UpperCAmelCase_            =  con.cursor()
            cur.execute('''SELECT * FROM dataset'''					)
            for row in cur:
                  yield row



@require_sqlalchemy
def  __lowerCamelCase       (      _UpperCamelCase  :  Tuple							,    _UpperCamelCase  :  Any							,    _UpperCamelCase  :  Union[str, Any]					):


      '''simple docstring'''


      UpperCAmelCase_            =  tmp_path / """cache"""
      UpperCAmelCase_            =  os.path.join(__lowerCAmelCase							,    '''tmp.sql'''					)
      UpperCAmelCase_            =  SqlDatasetReader('''dataset'''							,    '''sqlite:///''' + sqlite_path							,    cache_dir=__lowerCAmelCase					).read()
      SqlDatasetWriter(__lowerCAmelCase							,    '''dataset'''							,    '''sqlite:///''' + output_sqlite_path							,    num_proc=1					).write()

      UpperCAmelCase_            =  iter_sql_file(__lowerCAmelCase					)
      UpperCAmelCase_            =  iter_sql_file(__lowerCAmelCase					)

      for rowa, rowa in zip(__lowerCAmelCase							,    __lowerCAmelCase					):
            assert rowa == rowa



@require_sqlalchemy
def  __lowerCamelCase       (      _UpperCamelCase  :  str							,    _UpperCamelCase  :  Optional[int]							,    _UpperCamelCase  :  Optional[int]					):


      '''simple docstring'''


      UpperCAmelCase_            =  tmp_path / """cache"""
      UpperCAmelCase_            =  os.path.join(__lowerCAmelCase							,    '''tmp.sql'''					)
      UpperCAmelCase_            =  SqlDatasetReader('''dataset'''							,    '''sqlite:///''' + sqlite_path							,    cache_dir=__lowerCAmelCase					).read()
      SqlDatasetWriter(__lowerCAmelCase							,    '''dataset'''							,    '''sqlite:///''' + output_sqlite_path							,    num_proc=2					).write()

      UpperCAmelCase_            =  iter_sql_file(__lowerCAmelCase					)
      UpperCAmelCase_            =  iter_sql_file(__lowerCAmelCase					)

      for rowa, rowa in zip(__lowerCAmelCase							,    __lowerCAmelCase					):
            assert rowa == rowa





@require_sqlalchemy
def  __lowerCamelCase       (      _UpperCamelCase  :  str							,    _UpperCamelCase  :  Optional[int]							,    _UpperCamelCase  :  Optional[int]					):


      '''simple docstring'''


      UpperCAmelCase_            =  tmp_path / """cache"""
      UpperCAmelCase_            =  os.path.join(__lowerCAmelCase							,    '''tmp.sql'''					)
      UpperCAmelCase_            =  SqlDatasetReader('''dataset'''							,    '''sqlite:///''' + sqlite_path							,    cache_dir=__lowerCAmelCase					).read()
      with pytest.raises(__lowerCAmelCase					):
            SqlDatasetWriter(__lowerCAmelCase							,    '''dataset'''							,    '''sqlite:///''' + output_sqlite_path							,    num_proc=0					).write()






'''simple docstring'''
from __future__ import annotations



def  __lowerCamelCase       (      _UpperCamelCase  :  tuple[int, int]							,    _UpperCamelCase  :  int					):


      '''simple docstring'''


      UpperCAmelCase_      ,		UpperCAmelCase_            =  position
      UpperCAmelCase_            =  [
          (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),
      ]
      UpperCAmelCase_            =  []

      for position in positions:
            UpperCAmelCase_      ,		UpperCAmelCase_            =  position
            if 0 <= y_test < n and 0 <= x_test < n:
                  permissible_positions.append(_UpperCamelCase					)

      return permissible_positions



def  __lowerCamelCase       (      _UpperCamelCase  :  list[list[int]]					):


      '''simple docstring'''


      return not any(elem == 0 for row in board for elem in row					)



def  __lowerCamelCase       (      _UpperCamelCase  :  list[list[int]]							,    _UpperCamelCase  :  tuple[int, int]							,    _UpperCamelCase  :  int					):


      '''simple docstring'''


      if is_complete(_UpperCamelCase					):
            return True

      for position in get_valid_pos(_UpperCamelCase							,    len(_UpperCamelCase					)					):
            UpperCAmelCase_      ,		UpperCAmelCase_            =  position

            if board[y][x] == 0:
                  UpperCAmelCase_            =  curr + 1
                  if open_knight_tour_helper(_UpperCamelCase							,    _UpperCamelCase							,    curr + 1					):
                        return True
                  UpperCAmelCase_            =  0

      return False



def  __lowerCamelCase       (      _UpperCamelCase  :  int					):


      '''simple docstring'''


      UpperCAmelCase_            =  [[0 for i in range(_UpperCamelCase					)] for j in range(_UpperCamelCase					)]

      for i in range(_UpperCamelCase					):
            for j in range(_UpperCamelCase					):
                  UpperCAmelCase_            =  1
                  if open_knight_tour_helper(_UpperCamelCase							,    (i, j)							,    1					):
                        return board
                  UpperCAmelCase_            =  0

      UpperCAmelCase_            =  F"""Open Kight Tour cannot be performed on a board of size {n}"""
      raise ValueError(_UpperCamelCase					)


if __name__ == "__main__":
      import doctest

      doctest.testmod()





