


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

from collections.abc import Iterator
from typing import Any

class 						_lowerCamelCase					:




 '''simple docstring'''


 def __init__(      self      ,      __lowercase						):

  """simple docstring"""







  __A  :		Any       =			data
  __A  :		Node | None       =			None


class 						_lowerCamelCase					:




 '''simple docstring'''


 def __init__(      self						):

  """simple docstring"""







  __A  :		Optional[Any]       =			None
  __A  :		Optional[Any]       =			None


 def __iter__(      self						):

  """simple docstring"""







  __A  :		List[Any]       =			self.head
  while self.head:
   yield node.data
   __A  :		List[str]       =			node.next
   if node == self.head:
    break


 def __len__(      self						):

  """simple docstring"""







  return sum(1 for _ in self						)


 def __repr__(      self						):

  """simple docstring"""







  return "->".join(str(__lowercase						) for item in iter(self						)						)


 def  snake_case__   (      self      ,      __lowercase						):

  """simple docstring"""







  self.insert_nth(len(self						)      ,      __lowercase						)


 def  snake_case__   (      self      ,      __lowercase						):

  """simple docstring"""







  self.insert_nth(0      ,      __lowercase						)


 def  snake_case__   (      self      ,      __lowercase      ,      __lowercase						):

  """simple docstring"""







  if index < 0 or index > len(self						):
   raise IndexError('list index out of range.'						)
  __A  :		Optional[int]       =			Node(__lowercase						)
  if self.head is None:
   __A  :		str       =			new_node  # first node points itself
   __A  :		Tuple       =			new_node
  elif index == 0:  # insert at head
   __A  :		Any       =			self.head
   __A  :		Optional[int]       =			new_node
  else:
   __A  :		Union[str, Any]       =			self.head
   for _ in range(index - 1						):
    __A  :		List[str]       =			temp.next
   __A  :		List[Any]       =			temp.next
   __A  :		Union[str, Any]       =			new_node
   if index == len(self						) - 1:  # insert at tail
    __A  :		int       =			new_node


 def  snake_case__   (      self						):

  """simple docstring"""







  return self.delete_nth(0						)


 def  snake_case__   (      self						):

  """simple docstring"""







  return self.delete_nth(len(self						) - 1						)


 def  snake_case__   (      self      ,      __lowercase = 0						):

  """simple docstring"""







  if not 0 <= index < len(self						):
   raise IndexError('list index out of range.'						)
  __A  :		List[Any]       =			self.head
  if self.head == self.tail:  # just one node
   __A  :		Any       =			None
  elif index == 0:  # delete head node
   __A  :		Optional[Any]       =			self.tail.next.next
   __A  :		Union[str, Any]       =			self.head.next
  else:
   __A  :		Tuple       =			self.head
   for _ in range(index - 1						):
    __A  :		Optional[int]       =			temp.next
   __A  :		Tuple       =			temp.next
   __A  :		Optional[int]       =			temp.next.next
   if index == len(self						) - 1:  # delete at tail
    __A  :		List[Any]       =			temp
  return delete_node.data







 def  snake_case__   (      self						):

  """simple docstring"""







  return len(self						) == 0


def 			_lowercase       (				):
 __A  :		str       =			CircularLinkedList()
 assert len(UpperCamelCase__			) == 0
 assert circular_linked_list.is_empty() is True
 assert str(UpperCamelCase__			) == ""

 try:
  circular_linked_list.delete_front()
  raise AssertionError  # This should not happen
 except IndexError:
  assert True  # This should happen

 try:
  circular_linked_list.delete_tail()
  raise AssertionError  # This should not happen
 except IndexError:
  assert True  # This should happen

 try:
  circular_linked_list.delete_nth(-1			)
  raise AssertionError
 except IndexError:
  assert True

 try:
  circular_linked_list.delete_nth(0			)
  raise AssertionError
 except IndexError:
  assert True

 assert circular_linked_list.is_empty() is True
 for i in range(5			):
  assert len(UpperCamelCase__			) == i
  circular_linked_list.insert_nth(UpperCamelCase__,				i + 1			)
 assert str(UpperCamelCase__			) == "->".join(str(UpperCamelCase__			) for i in range(1,				6			)			)

 circular_linked_list.insert_tail(6			)
 assert str(UpperCamelCase__			) == "->".join(str(UpperCamelCase__			) for i in range(1,				7			)			)
 circular_linked_list.insert_head(0			)
 assert str(UpperCamelCase__			) == "->".join(str(UpperCamelCase__			) for i in range(0,				7			)			)

 assert circular_linked_list.delete_front() == 0
 assert circular_linked_list.delete_tail() == 6
 assert str(UpperCamelCase__			) == "->".join(str(UpperCamelCase__			) for i in range(1,				6			)			)
 assert circular_linked_list.delete_nth(2			) == 3

 circular_linked_list.insert_nth(2,				3			)
 assert str(UpperCamelCase__			) == "->".join(str(UpperCamelCase__			) for i in range(1,				6			)			)

 assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
 import doctest

 doctest.testmod()





'''simple docstring'''
import os
from pathlib import Path
from unittest.mock import patch

import pytest
import zstandard as zstd

from datasets.download.download_config import DownloadConfig
from datasets.utils.file_utils import (
    OfflineModeIsEnabled,
    cached_path,
    fsspec_get,
    fsspec_head,
    ftp_get,
    ftp_head,
    get_from_cache,
    http_get,
    http_head,
)


UpperCAmelCase_ :     int								=      '\\n    Text data.\n    Second line of data.'

UpperCAmelCase_ :     Tuple								=      'file'


@pytest.fixture(scope='session'			)
def 			_lowercase       (				UpperCamelCase__       :					Any			):
 __A  :		Optional[Any]       =			tmp_path_factory.mktemp('data'			) / (FILE_PATH + '.zstd')
 __A  :		Optional[int]       =			bytes(UpperCamelCase__,				'utf-8'			)
 with zstd.open(UpperCamelCase__,				'wb'			) as f:
  f.write(UpperCamelCase__			)
 return path


@pytest.fixture
def 			_lowercase       (				UpperCamelCase__       :					Optional[Any]			):
 with open(os.path.join(tmpfs.local_root_dir,				UpperCamelCase__			),				'w'			) as f:
  f.write(UpperCamelCase__			)
 return FILE_PATH


@pytest.mark.parametrize('compression_format',				['gzip', 'xz', 'zstd']			)
def 			_lowercase       (				UpperCamelCase__       :					List[Any],				UpperCamelCase__       :					Tuple,				UpperCamelCase__       :					Union[str, Any],				UpperCamelCase__       :					str,				UpperCamelCase__       :					Tuple,				UpperCamelCase__       :					List[str]			):
 __A  :		Any       =			{'gzip': gz_file, 'xz': xz_file, 'zstd': zstd_path}
 __A  :		str       =			input_paths[compression_format]
 __A  :		str       =			tmp_path / 'cache'
 __A  :		int       =			DownloadConfig(cache_dir=UpperCamelCase__,				extract_compressed_file=UpperCamelCase__			)
 __A  :		Tuple       =			cached_path(UpperCamelCase__,				download_config=UpperCamelCase__			)
 with open(UpperCamelCase__			) as f:
  __A  :		Union[str, Any]       =			f.read()
 with open(UpperCamelCase__			) as f:
  __A  :		int       =			f.read()
 assert extracted_file_content == expected_file_content


@pytest.mark.parametrize('default_extracted',				[True, False]			)
@pytest.mark.parametrize('default_cache_dir',				[True, False]			)
def 			_lowercase       (				UpperCamelCase__       :					List[Any],				UpperCamelCase__       :					Optional[int],				UpperCamelCase__       :					str,				UpperCamelCase__       :					int,				UpperCamelCase__       :					Dict			):
 __A  :		Optional[Any]       =			'custom_cache'
 __A  :		Dict       =			'custom_extracted_dir'
 __A  :		int       =			tmp_path / 'custom_extracted_path'
 if default_extracted:
  __A  :		List[str]       =			('downloads' if default_cache_dir else custom_cache_dir, 'extracted')
 else:
  monkeypatch.setattr('datasets.config.EXTRACTED_DATASETS_DIR',				UpperCamelCase__			)
  monkeypatch.setattr('datasets.config.EXTRACTED_DATASETS_PATH',				str(UpperCamelCase__			)			)
  __A  :		Optional[int]       =			custom_extracted_path.parts[-2:] if default_cache_dir else (custom_cache_dir, custom_extracted_dir)

 __A  :		Optional[Any]       =			xz_file
 __A  :		List[Any]       =			(
     DownloadConfig(extract_compressed_file=UpperCamelCase__			)
     if default_cache_dir
     else DownloadConfig(cache_dir=tmp_path / custom_cache_dir,				extract_compressed_file=UpperCamelCase__			)
 )
 __A  :		Tuple       =			cached_path(UpperCamelCase__,				download_config=UpperCamelCase__			)
 assert Path(UpperCamelCase__			).parent.parts[-2:] == expected


def 			_lowercase       (				UpperCamelCase__       :					Optional[int]			):
 # absolute path
 __A  :		Any       =			str(Path(UpperCamelCase__			).resolve()			)
 assert cached_path(UpperCamelCase__			) == text_file
 # relative path
 __A  :		Optional[Any]       =			str(Path(UpperCamelCase__			).resolve().relative_to(Path(os.getcwd()			)			)			)
 assert cached_path(UpperCamelCase__			) == text_file


def 			_lowercase       (				UpperCamelCase__       :					List[str]			):
 # absolute path
 __A  :		Any       =			str(tmp_path.resolve() / '__missing_file__.txt'			)
 with pytest.raises(UpperCamelCase__			):
  cached_path(UpperCamelCase__			)
 # relative path
 __A  :		Tuple       =			'./__missing_file__.txt'
 with pytest.raises(UpperCamelCase__			):
  cached_path(UpperCamelCase__			)


def 			_lowercase       (				UpperCamelCase__       :					Tuple			):
 __A  :		Optional[int]       =			get_from_cache(f"""tmp://{tmpfs_file}"""			)
 with open(UpperCamelCase__			) as f:
  __A  :		Tuple       =			f.read()
 assert output_file_content == FILE_CONTENT


@patch('datasets.config.HF_DATASETS_OFFLINE',				UpperCamelCase__			)
def 			_lowercase       (				):
 with pytest.raises(UpperCamelCase__			):
  cached_path('https://huggingface.co'			)


@patch('datasets.config.HF_DATASETS_OFFLINE',				UpperCamelCase__			)
def 			_lowercase       (				UpperCamelCase__       :					Optional[Any]			):
 __A  :		Optional[int]       =			tmp_path_factory.mktemp('data'			) / 'file.html'
 with pytest.raises(UpperCamelCase__			):
  http_get('https://huggingface.co',				temp_file=UpperCamelCase__			)
 with pytest.raises(UpperCamelCase__			):
  http_head('https://huggingface.co'			)


@patch('datasets.config.HF_DATASETS_OFFLINE',				UpperCamelCase__			)
def 			_lowercase       (				UpperCamelCase__       :					Any			):
 __A  :		Union[str, Any]       =			tmp_path_factory.mktemp('data'			) / 'file.html'
 with pytest.raises(UpperCamelCase__			):
  ftp_get('ftp://huggingface.co',				temp_file=UpperCamelCase__			)
 with pytest.raises(UpperCamelCase__			):
  ftp_head('ftp://huggingface.co'			)


@patch('datasets.config.HF_DATASETS_OFFLINE',				UpperCamelCase__			)
def 			_lowercase       (				UpperCamelCase__       :					Optional[Any]			):
 __A  :		Optional[int]       =			tmp_path_factory.mktemp('data'			) / 'file.html'
 with pytest.raises(UpperCamelCase__			):
  fsspec_get('s3://huggingface.co',				temp_file=UpperCamelCase__			)
 with pytest.raises(UpperCamelCase__			):
  fsspec_head('s3://huggingface.co'			)






