


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       _a			(				SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):


		"""simple docstring"""




		assert isinstance(SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					)
		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       _a			(				SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):


		"""simple docstring"""




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


		"""simple docstring"""




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


		"""simple docstring"""




		with contextlib.closing(sqlitea.connect(SCREAMING_SNAKE_CASE					)					) as con:
				lowercase__						=				con.cursor()
				cur.execute('''SELECT * FROM dataset'''					)
				for row in cur:
						yield row
@require_sqlalchemy
def       _a			(				SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):


		"""simple docstring"""




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

		lowercase__						=				iter_sql_file(SCREAMING_SNAKE_CASE					)
		lowercase__						=				iter_sql_file(SCREAMING_SNAKE_CASE					)

		for rowa, rowa in zip(SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):
				assert rowa == rowa
@require_sqlalchemy
def       _a			(				SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):


		"""simple docstring"""




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

		lowercase__						=				iter_sql_file(SCREAMING_SNAKE_CASE					)
		lowercase__						=				iter_sql_file(SCREAMING_SNAKE_CASE					)

		for rowa, rowa in zip(SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):
				assert rowa == rowa
@require_sqlalchemy
def       _a			(				SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					):


		"""simple docstring"""




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






from __future__ import annotations

from collections import namedtuple
from dataclasses import dataclass


@dataclass
class 	_a							:
							_lowercase     :      int
							_lowercase     :      TreeNode | None  				=			None
							_lowercase     :      TreeNode | None  				=			None
lowerCAmelCase	=							namedtuple('CoinsDistribResult', 'moves excess')
def       _a			(				SCREAMING_SNAKE_CASE					):


		"""simple docstring"""




		if root is None:
				return 0

		# Validation
		def count_nodes(SCREAMING_SNAKE_CASE					) -> int:
				if node is None:
						return 0

				return count_nodes(node.left					) + count_nodes(node.right					) + 1

		def count_coins(SCREAMING_SNAKE_CASE					) -> int:
				if node is None:
						return 0

				return count_coins(node.left					) + count_coins(node.right					) + node.data

		if count_nodes(SCREAMING_SNAKE_CASE					) != count_coins(SCREAMING_SNAKE_CASE					):
				raise ValueError('''The nodes number should be same as the number of coins'''					)

		# Main calculation
		def get_distrib(SCREAMING_SNAKE_CASE					) -> CoinsDistribResult:

				if node is None:
						return CoinsDistribResult(0						,    1					)

				lowercase__					,		lowercase__						=				get_distrib(node.left					)
				lowercase__					,		lowercase__						=				get_distrib(node.right					)

				lowercase__						=				1 - left_distrib_excess
				lowercase__						=				1 - right_distrib_excess

				lowercase__						=				(
				    left_distrib_moves
				    + right_distrib_moves
				    + abs(SCREAMING_SNAKE_CASE					)
				    + abs(SCREAMING_SNAKE_CASE					)
				)
				lowercase__						=				node.data - coins_to_left - coins_to_right

				return CoinsDistribResult(SCREAMING_SNAKE_CASE						,    SCREAMING_SNAKE_CASE					)

		return get_distrib(SCREAMING_SNAKE_CASE					)[0]


if __name__ == "__main__":
			import doctest

			doctest.testmod()


