

'''simple docstring'''

import csv
import os

import pytest

from datasets import Dataset, DatasetDict, Features, NamedSplit, Value
from datasets.io.csv import CsvDatasetReader, CsvDatasetWriter

from ..utils import assert_arrow_memory_doesnt_increase, assert_arrow_memory_increases

def      __magic_name__							(			A       , A				)      ->		str:
	assert isinstance(A       , A				)
	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

@pytest.mark.parametrize('keep_in_memory'       , [False, True]				)
def      __magic_name__							(			A       , A       , A				)      ->		Tuple:
	snake_case							=					tmp_path / 'cache'
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	with assert_arrow_memory_increases() if keep_in_memory else assert_arrow_memory_doesnt_increase():
		snake_case							=					CsvDatasetReader(A       , cache_dir=A       , keep_in_memory=A				).read()
	_check_csv_dataset(A       , A				)

@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      __magic_name__							(			A       , A       , A				)      ->		List[Any]:
	snake_case							=					tmp_path / 'cache'
	# CSV file loses col_1 string dtype information: default now is "int64" instead of "string"
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	snake_case							=					features.copy() if features else default_expected_features
	snake_case							=					(
	    Features({feature: Value(A				) for feature, dtype in features.items()}				) if features is not None else None
	)
	snake_case							=					CsvDatasetReader(A       , features=A       , cache_dir=A				).read()
	_check_csv_dataset(A       , A				)

@pytest.mark.parametrize('split'       , [None, NamedSplit('train'				), 'train', 'test']				)
def      __magic_name__							(			A       , A       , A				)      ->		int:
	snake_case							=					tmp_path / 'cache'
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	snake_case							=					CsvDatasetReader(A       , cache_dir=A       , split=A				).read()
	_check_csv_dataset(A       , A				)
	assert dataset.split == split if split else "train"

@pytest.mark.parametrize('path_type'       , [str, list]				)
def      __magic_name__							(			A       , A       , A				)      ->		str:
	if issubclass(A       , A				):
		snake_case							=					csv_path
	elif issubclass(A       , A				):
		snake_case							=					[csv_path]
	snake_case							=					tmp_path / 'cache'
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	snake_case							=					CsvDatasetReader(A       , cache_dir=A				).read()
	_check_csv_dataset(A       , A				)

def      __magic_name__							(			A       , A       , A=("train",)				)      ->		Optional[int]:
	assert isinstance(A       , A				)
	for split in splits:
		snake_case							=					dataset_dict[split]
		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

@pytest.mark.parametrize('keep_in_memory'       , [False, True]				)
def      __magic_name__							(			A       , A       , A				)      ->		Dict:
	snake_case							=					tmp_path / 'cache'
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	with assert_arrow_memory_increases() if keep_in_memory else assert_arrow_memory_doesnt_increase():
		snake_case							=					CsvDatasetReader({'train': csv_path}       , cache_dir=A       , keep_in_memory=A				).read()
	_check_csv_datasetdict(A       , A				)

@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      __magic_name__							(			A       , A       , A				)      ->		Any:
	snake_case							=					tmp_path / 'cache'
	# CSV file loses col_1 string dtype information: default now is "int64" instead of "string"
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	snake_case							=					features.copy() if features else default_expected_features
	snake_case							=					(
	    Features({feature: Value(A				) for feature, dtype in features.items()}				) if features is not None else None
	)
	snake_case							=					CsvDatasetReader({'train': csv_path}       , features=A       , cache_dir=A				).read()
	_check_csv_datasetdict(A       , A				)

@pytest.mark.parametrize('split'       , [None, NamedSplit('train'				), 'train', 'test']				)
def      __magic_name__							(			A       , A       , A				)      ->		Any:
	if split:
		snake_case							=					{split: csv_path}
	else:
		snake_case							=					{'train': csv_path, 'test': csv_path}
	snake_case							=					tmp_path / 'cache'
	snake_case							=					{'col_1': 'int64', 'col_2': 'int64', 'col_3': 'float64'}
	snake_case							=					CsvDatasetReader(A       , cache_dir=A				).read()
	_check_csv_datasetdict(A       , A       , splits=list(path.keys()				)				)
	assert all(dataset[split].split == split for split in path.keys()				)

def      __magic_name__							(			A				)      ->		str:
	with open(A       , encoding='utf-8'				) as csvfile:
		yield from csv.reader(A				)

def      __magic_name__							(			A       , A				)      ->		Any:
	snake_case							=					tmp_path / 'cache'
	snake_case							=					os.path.join(A       , 'tmp.csv'				)
	snake_case							=					CsvDatasetReader({'train': csv_path}       , cache_dir=A				).read()
	CsvDatasetWriter(dataset['train']       , A       , num_proc=1				).write()

	snake_case							=					iter_csv_file(A				)
	snake_case							=					iter_csv_file(A				)

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

def      __magic_name__							(			A       , A				)      ->		Tuple:
	snake_case							=					tmp_path / 'cache'
	snake_case							=					os.path.join(A       , 'tmp.csv'				)
	snake_case							=					CsvDatasetReader({'train': csv_path}       , cache_dir=A				).read()
	CsvDatasetWriter(dataset['train']       , A       , num_proc=2				).write()

	snake_case							=					iter_csv_file(A				)
	snake_case							=					iter_csv_file(A				)

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


def      __magic_name__							(			A       , A				)      ->		List[Any]:
	snake_case							=					tmp_path / 'cache'
	snake_case							=					os.path.join(A       , 'tmp.csv'				)
	snake_case							=					CsvDatasetReader({'train': csv_path}       , cache_dir=A				).read()
	with pytest.raises(A				):
		CsvDatasetWriter(dataset['train']       , A       , num_proc=0				)







from __future__ import annotations

from typing import Any

class        UpperCamelCase__:

	"""simple docstring"""

	def __init__(      self				:			Dict							,			snake_case__				:			Any							,			snake_case__				:			Any ):  # noqa: A002
			"""simple docstring"""





			A				=item
			A				=next


class        UpperCamelCase__:

	"""simple docstring"""

	def __init__(      self				:			Optional[Any] ):
			"""simple docstring"""





			A				=None
			A				=0







	def        _a					(      self				:			str							,			snake_case__				:			Any ):
			"""simple docstring"""





			A				=Node(snake_case__							,			self.head )
			self.size += 1







	def        _a					(      self				:			Dict ):
			"""simple docstring"""





			if self.head is None:
					return None
			else:
					A				=self.head.item
					A				=self.head.next
					self.size -= 1
					return item







	def        _a					(      self				:			Any ):
			"""simple docstring"""





			return self.head is None







	def __str__(      self				:			Dict ):
			"""simple docstring"""





			if self.is_empty():
					return ""
			else:
					A				=self.head
					A				=""
					A				=[]
					while iterate:
							item_list.append(str(iterate.item ) )
							A				=iterate.next

					A				=" --> ".join(snake_case__ )

					return item_str







	def __len__(      self				:			Union[str, Any] ):
			"""simple docstring"""





			return self.size




