


'''simple docstring'''



from typing import Any





class 							__UpperCamelCase				:




	def __init__(   self						,				__a							):

						'''simple docstring'''





						__a			:       Optional[int]					    =  data
						__a			:       List[Any]					    =  None





	def __repr__(   self							):

						'''simple docstring'''





						return f"""Node({self.data})"""





class 							__UpperCamelCase				:




	def __init__(   self							):

						'''simple docstring'''





						__a			:       Optional[Any]					    =  None




	def __iter__(   self							):

						'''simple docstring'''





						__a			:       List[str]					    =  self.head
						while node:
											yield node.data
											__a			:       Union[str, Any]					    =  node.next




	def __len__(   self							):

						'''simple docstring'''





						return sum(1 for _ in self							)




	def __repr__(   self							):

						'''simple docstring'''





						return "->".join([str(__a							) for item in self]							)




	def __getitem__(   self						,				__a							):

						'''simple docstring'''





						if not 0 <= index < len(self							):
											raise ValueError('list index out of range.'							)
						for i, node in enumerate(self							):
											if i == index:
																return node
						return None




	def __setitem__(   self						,				__a						,				__a							):

						'''simple docstring'''





						if not 0 <= index < len(self							):
											raise ValueError('list index out of range.'							)
						__a			:       Any					    =  self.head
						for _ in range(__a							):
											__a			:       int					    =  current.next
						__a			:       str					    =  data




	def       __UpperCAmelCase							(   self						,				__a							):

						'''simple docstring'''





						self.insert_nth(len(self							)						,				__a							)




	def       __UpperCAmelCase							(   self						,				__a							):

						'''simple docstring'''





						self.insert_nth(0						,				__a							)




	def       __UpperCAmelCase							(   self						,				__a						,				__a							):

						'''simple docstring'''





						if not 0 <= index <= len(self							):
											raise IndexError('list index out of range'							)
						__a			:       List[Any]					    =  Node(__a							)
						if self.head is None:
											__a			:       Optional[Any]					    =  new_node
						elif index == 0:
											__a			:       Optional[Any]					    =  self.head  # link new_node to head
											__a			:       Union[str, Any]					    =  new_node
						else:
											__a			:       Any					    =  self.head
											for _ in range(index - 1							):
																__a			:       Optional[int]					    =  temp.next
											__a			:       List[Any]					    =  temp.next
											__a			:       List[str]					    =  new_node




	def       __UpperCAmelCase							(   self							):  # print every node data

						'''simple docstring'''





						print(self							)




	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						return self.delete_nth(0							)




	def       __UpperCAmelCase							(   self							):  # delete from tail

						'''simple docstring'''





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




	def       __UpperCAmelCase							(   self						,				__a = 0							):

						'''simple docstring'''





						if not 0 <= index <= len(self							) - 1:  # test if index is valid
											raise IndexError('List index out of range.'							)
						__a			:       Optional[int]					    =  self.head  # default first node
						if index == 0:
											__a			:       Optional[Any]					    =  self.head.next
						else:
											__a			:       int					    =  self.head
											for _ in range(index - 1							):
																__a			:       Any					    =  temp.next
											__a			:       Any					    =  temp.next
											__a			:       Any					    =  temp.next.next
						return delete_node.data




	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						return self.head is None





	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						__a			:       Any					    =  None
						__a			:       Dict					    =  self.head

						while current:
											# Store the current node's next node.
											__a			:       Optional[int]					    =  current.next
											# Make the current node's next point backwards
											__a			:       Any					    =  prev
											# Make the previous node be the current node
											__a			:       str					    =  current
											# Make the current node the next node (to progress iteration)
											__a			:       Dict					    =  next_node
						# Return prev in order to put the head at the end
						__a			:       Tuple					    =  prev






def   lowerCamelCase							():
					__a			:       Tuple					    =  LinkedList()
					assert linked_list.is_empty() is True
					assert str(_SCREAMING_SNAKE_CASE   ) == ""

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

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

					for i in range(10   ):
										assert len(_SCREAMING_SNAKE_CASE   ) == i
										linked_list.insert_nth(_SCREAMING_SNAKE_CASE						,      i + 1   )
					assert str(_SCREAMING_SNAKE_CASE   ) == "->".join(str(_SCREAMING_SNAKE_CASE   ) for i in range(1						,      11   )   )

					linked_list.insert_head(0   )
					linked_list.insert_tail(11   )
					assert str(_SCREAMING_SNAKE_CASE   ) == "->".join(str(_SCREAMING_SNAKE_CASE   ) for i in range(0						,      12   )   )

					assert linked_list.delete_head() == 0
					assert linked_list.delete_nth(9   ) == 10
					assert linked_list.delete_tail() == 11
					assert len(_SCREAMING_SNAKE_CASE   ) == 9
					assert str(_SCREAMING_SNAKE_CASE   ) == "->".join(str(_SCREAMING_SNAKE_CASE   ) for i in range(1						,      10   )   )

					assert all(linked_list[i] == i + 1 for i in range(0						,      9   )   ) is True

					for i in range(0						,      9   ):
										__a			:       Dict					    =  -i
					assert all(linked_list[i] == -i for i in range(0						,      9   )   ) is True

					linked_list.reverse()
					assert str(_SCREAMING_SNAKE_CASE   ) == "->".join(str(_SCREAMING_SNAKE_CASE   ) for i in range(-8						,      1   )   )






def   lowerCamelCase							():
					__a			:       Tuple					    =  [
					    -9,
					    100,
					    Node(77_345_112   ),
					    'dlrow olleH',
					    7,
					    5_555,
					    0,
					    -1_9_2.5_5_5_5_5,
					    'Hello, world!',
					    7_7.9,
					    Node(10   ),
					    None,
					    None,
					    1_2.2_0,
					]
					__a			:       Any					    =  LinkedList()

					for i in test_input:
										linked_list.insert_tail(_SCREAMING_SNAKE_CASE   )

					# Check if it's empty or not
					assert linked_list.is_empty() is False
					assert (
					    str(_SCREAMING_SNAKE_CASE   ) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
					    "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
					)

					# Delete the head
					__a			:       Union[str, Any]					    =  linked_list.delete_head()
					assert result == -9
					assert (
					    str(_SCREAMING_SNAKE_CASE   ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
					    "Hello, world!->77.9->Node(10)->None->None->12.2"
					)

					# Delete the tail
					__a			:       Dict					    =  linked_list.delete_tail()
					assert result == 1_2.2
					assert (
					    str(_SCREAMING_SNAKE_CASE   ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
					    "Hello, world!->77.9->Node(10)->None->None"
					)

					# Delete a node in specific location in linked list
					__a			:       Union[str, Any]					    =  linked_list.delete_nth(10   )
					assert result is None
					assert (
					    str(_SCREAMING_SNAKE_CASE   ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
					    "Hello, world!->77.9->Node(10)->None"
					)

					# Add a Node instance to its head
					linked_list.insert_head(Node('Hello again, world!'   )   )
					assert (
					    str(_SCREAMING_SNAKE_CASE   )
					    == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
					    "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
					)

					# Add None to its tail
					linked_list.insert_tail(_SCREAMING_SNAKE_CASE   )
					assert (
					    str(_SCREAMING_SNAKE_CASE   )
					    == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
					    "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
					)

					# Reverse the linked list
					linked_list.reverse()
					assert (
					    str(_SCREAMING_SNAKE_CASE   )
					    == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
					    "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
					)






def   lowerCamelCase							():
					from doctest import testmod

					testmod()

					__a			:       List[str]					    =  LinkedList()
					linked_list.insert_head(input('Inserting 1st at head '   ).strip()   )
					linked_list.insert_head(input('Inserting 2nd at head '   ).strip()   )
					print('\nPrint list:'   )
					linked_list.print_list()
					linked_list.insert_tail(input('\nInserting 1st at tail '   ).strip()   )
					linked_list.insert_tail(input('Inserting 2nd at tail '   ).strip()   )
					print('\nPrint list:'   )
					linked_list.print_list()
					print('\nDelete head'   )
					linked_list.delete_head()
					print('Delete tail'   )
					linked_list.delete_tail()
					print('\nPrint list:'   )
					linked_list.print_list()
					print('\nReverse linked list'   )
					linked_list.reverse()
					print('\nPrint list:'   )
					linked_list.print_list()
					print('\nString representation of linked list:'   )
					print(_SCREAMING_SNAKE_CASE   )
					print('\nReading/changing Node data using indexing:'   )
					print(F"""Element at Position 1: {linked_list[1]}"""   )
					__a			:       Union[str, Any]					    =  input('Enter New Value: '   ).strip()
					print('New list:'   )
					print(_SCREAMING_SNAKE_CASE   )
					print(F"""length of linked_list is : {len(_SCREAMING_SNAKE_CASE   )}"""   )


if __name__ == "__main__":
	main()







'''simple docstring'''



import doctest
import glob
import importlib
import inspect
import os
import re
from contextlib import contextmanager
from functools import wraps
from unittest.mock import patch

import numpy as np
import pytest
from absl.testing import parameterized

import datasets
from datasets import load_metric

from .utils import for_all_test_methods, local, slow


# mark all tests as integration
__lowercase	:						Tuple       =	pytest.mark.integration


__lowercase	:						Optional[int]       =	{'comet'}
__lowercase	:						List[str]       =	importlib.util.find_spec('fairseq') is not None

__lowercase	:						str       =	{'code_eval'}
__lowercase	:						List[Any]       =	os.name == 'nt'

__lowercase	:						Optional[Any]       =	{'bertscore', 'frugalscore', 'perplexity'}
__lowercase	:						Optional[Any]       =	importlib.util.find_spec('transformers') is not None






def   lowerCamelCase							(_SCREAMING_SNAKE_CASE      :   Dict   ):
					@wraps(_SCREAMING_SNAKE_CASE   )
					def wrapper(self      :   int						,      _SCREAMING_SNAKE_CASE      :   List[Any]   ):
										if not _has_fairseq and metric_name in REQUIRE_FAIRSEQ:
															self.skipTest('"test requires Fairseq"'   )
										else:
															test_case(self						,      _SCREAMING_SNAKE_CASE   )

					return wrapper






def   lowerCamelCase							(_SCREAMING_SNAKE_CASE      :   Union[str, Any]   ):
					@wraps(_SCREAMING_SNAKE_CASE   )
					def wrapper(self      :   Dict						,      _SCREAMING_SNAKE_CASE      :   Union[str, Any]   ):
										if not _has_transformers and metric_name in REQUIRE_TRANSFORMERS:
															self.skipTest('"test requires transformers"'   )
										else:
															test_case(self						,      _SCREAMING_SNAKE_CASE   )

					return wrapper






def   lowerCamelCase							(_SCREAMING_SNAKE_CASE      :   Dict   ):
					@wraps(_SCREAMING_SNAKE_CASE   )
					def wrapper(self      :   Optional[int]						,      _SCREAMING_SNAKE_CASE      :   Optional[Any]   ):
										if _on_windows and metric_name in UNSUPPORTED_ON_WINDOWS:
															self.skipTest('"test not supported on Windows"'   )
										else:
															test_case(self						,      _SCREAMING_SNAKE_CASE   )

					return wrapper






def   lowerCamelCase							():
					__a			:       List[Any]					    =  [metric_dir.split(os.sep   )[-2] for metric_dir in glob.glob('./metrics/*/'   )]
					return [{"testcase_name": x, "metric_name": x} for x in metrics if x != "gleu"]  # gleu is unfinished





@parameterized.named_parameters(get_local_metric_names()					)
@for_all_test_methods(
    lowerCAmelCase_		,      lowerCAmelCase_		,      lowerCAmelCase_					)
@local
class 							__UpperCamelCase				(		parameterized.TestCase					):
	A_				=    {}
	A_				=    None




	@pytest.mark.filterwarnings('ignore:metric_module_factory is deprecated:FutureWarning'							)
	@pytest.mark.filterwarnings('ignore:load_metric is deprecated:FutureWarning'							)
	def       __UpperCAmelCase							(   self						,				__a							):

						'''simple docstring'''





						__a			:       int					    =  '[...]'
						__a			:       Tuple					    =  importlib.import_module(
						    datasets.load.metric_module_factory(os.path.join('metrics'						,				__a							)							).module_path							)
						__a			:       Optional[Any]					    =  datasets.load.import_main_class(metric_module.__name__						,				dataset=__a							)
						# check parameters
						__a			:       Dict					    =  inspect.signature(metric._compute							).parameters
						self.assertTrue(all(p.kind != p.VAR_KEYWORD for p in parameters.values()							)							)  # no **kwargs
						# run doctest
						with self.patch_intensive_calls(__a						,				metric_module.__name__							):
											with self.use_local_metrics():
																try:
																					__a			:       str					    =  doctest.testmod(__a						,				verbose=__a						,				raise_on_error=__a							)
																except doctest.UnexpectedException as e:
																					raise e.exc_info[1]  # raise the exception that doctest caught
						self.assertEqual(results.failed						,				0							)
						self.assertGreater(results.attempted						,				1							)




	@slow
	def       __UpperCAmelCase							(   self						,				__a							):

						'''simple docstring'''





						__a			:       Tuple					    =  '[...]'
						__a			:       Optional[Any]					    =  importlib.import_module(
						    datasets.load.metric_module_factory(os.path.join('metrics'						,				__a							)							).module_path							)
						# run doctest
						with self.use_local_metrics():
											__a			:       List[Any]					    =  doctest.testmod(__a						,				verbose=__a						,				raise_on_error=__a							)
						self.assertEqual(results.failed						,				0							)
						self.assertGreater(results.attempted						,				1							)




	@contextmanager
	def       __UpperCAmelCase							(   self						,				__a						,				__a							):

						'''simple docstring'''





						if metric_name in self.INTENSIVE_CALLS_PATCHER:
											with self.INTENSIVE_CALLS_PATCHER[metric_name](__a							):
																yield
						else:
											yield




	@contextmanager
	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						def load_local_metric(__a						,				*__a						,				**__a							):
											return load_metric(os.path.join('metrics'						,				__a							)						,				*__a						,				**__a							)

						with patch('datasets.load_metric'							) as mock_load_metric:
											__a			:       Dict					    =  load_local_metric
											yield





	@classmethod
	def       __UpperCAmelCase							(   cls						,				__a							):

						'''simple docstring'''





						def wrapper(__a							):
											__a			:       Optional[Any]					    =  contextmanager(__a							)
											__a			:       str					    =  patcher
											return patcher

						return wrapper






@LocalMetricTest.register_intensive_calls_patcher('bleurt'   )
def   lowerCamelCase							(_SCREAMING_SNAKE_CASE      :   Dict   ):
					import tensorflow.compat.va as tf
					from bleurt.score import Predictor

					tf.flags.DEFINE_string('sv'						,      ''						,      ''   )  # handle pytest cli flags





					class 							__UpperCamelCase				(		lowerCAmelCase_					):




						def       __UpperCAmelCase							(   self						,				__a							):

											'''simple docstring'''





											assert len(input_dict['input_ids']							) == 2
											return np.array([1.03, 1.04]							)

    # mock predict_fn which is supposed to do a forward pass with a bleurt model
					with patch('bleurt.score._create_predictor'   ) as mock_create_predictor:
										__a			:       Dict					    =  MockedPredictor()
										yield






@LocalMetricTest.register_intensive_calls_patcher('bertscore'   )
def   lowerCamelCase							(_SCREAMING_SNAKE_CASE      :   str   ):
					import torch

					def bert_cos_score_idf(_SCREAMING_SNAKE_CASE      :   List[str]						,      _SCREAMING_SNAKE_CASE      :   str						,      *_SCREAMING_SNAKE_CASE      :   int						,      **_SCREAMING_SNAKE_CASE      :   Optional[int]   ):
										return torch.tensor([[1.0, 1.0, 1.0]] * len(_SCREAMING_SNAKE_CASE   )   )

					# mock get_model which is supposed to do download a bert model
					# mock bert_cos_score_idf which is supposed to do a forward pass with a bert model
					with patch('bert_score.scorer.get_model'   ), patch(
					    'bert_score.scorer.bert_cos_score_idf'   ) as mock_bert_cos_score_idf:
										__a			:       str					    =  bert_cos_score_idf
										yield






@LocalMetricTest.register_intensive_calls_patcher('comet'   )
def   lowerCamelCase							(_SCREAMING_SNAKE_CASE      :   Dict   ):
					def load_from_checkpoint(_SCREAMING_SNAKE_CASE      :   Optional[int]   ):





										class 							__UpperCamelCase				:




											def       __UpperCAmelCase							(   self						,				__a						,				*__a						,				**__a							):

																'''simple docstring'''





																assert len(__a							) == 2
																__a			:       Dict					    =  [0.19, 0.92]
																return scores, sum(__a							) / len(__a							)



										return Model()

					# mock load_from_checkpoint which is supposed to do download a bert model
					# mock load_from_checkpoint which is supposed to do download a bert model
					with patch('comet.download_model'   ) as mock_download_model:
										__a			:       str					    =  None
										with patch('comet.load_from_checkpoint'   ) as mock_load_from_checkpoint:
															__a			:       int					    =  load_from_checkpoint
															yield






def   lowerCamelCase							():
					__a			:       Optional[Any]					    =  load_metric(os.path.join('metrics'						,      'seqeval'   )   )
					__a			:       List[str]					    =  'ERROR'
					__a			:       List[str]					    =  F"""Scheme should be one of [IOB1, IOB2, IOE1, IOE2, IOBES, BILOU], got {wrong_scheme}"""
					with pytest.raises(_SCREAMING_SNAKE_CASE						,      match=re.escape(_SCREAMING_SNAKE_CASE   )   ):
										metric.compute(predictions=[]						,      references=[]						,      scheme=_SCREAMING_SNAKE_CASE   )



