


"""simple docstring"""




import json
import os
import shutil
import tempfile
from unittest import TestCase

from transformers import BartTokenizer, BartTokenizerFast, DPRQuestionEncoderTokenizer, DPRQuestionEncoderTokenizerFast
from transformers.models.bart.configuration_bart import BartConfig
from transformers.models.bert.tokenization_bert import VOCAB_FILES_NAMES as DPR_VOCAB_FILES_NAMES
from transformers.models.dpr.configuration_dpr import DPRConfig
from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES as BART_VOCAB_FILES_NAMES
from transformers.testing_utils import require_faiss, require_tokenizers, require_torch, slow
from transformers.utils import is_datasets_available, is_faiss_available, is_torch_available


if is_torch_available() and is_datasets_available() and is_faiss_available():
				from transformers.models.rag.configuration_rag import RagConfig
				from transformers.models.rag.tokenization_rag import RagTokenizer
@require_faiss
@require_torch
class 					__lowerCAmelCase					(   __SCREAMING_SNAKE_CASE       ):


		'''simple docstring'''



		def 			__UpperCAmelCase       (  self      ):
				__a           =			tempfile.mkdtemp()
				__a           =			8

				# DPR tok
				__a           =			[
				    '''[UNK]''',
				    '''[CLS]''',
				    '''[SEP]''',
				    '''[PAD]''',
				    '''[MASK]''',
				    '''want''',
				    '''##want''',
				    '''##ed''',
				    '''wa''',
				    '''un''',
				    '''runn''',
				    '''##ing''',
				    ''',''',
				    '''low''',
				    '''lowest''',
				]
				__a           =			os.path.join(self.tmpdirname							, '''dpr_tokenizer'''      )
				os.makedirs(_a							, exist_ok=_a      )
				__a           =			os.path.join(_a							, DPR_VOCAB_FILES_NAMES['''vocab_file''']      )
				with open(self.vocab_file							, '''w'''							, encoding='''utf-8'''      ) as vocab_writer:
						vocab_writer.write(''''''.join([x + '''\n''' for x in vocab_tokens]      )      )

				# BART tok
				__a           =			[
				    '''l''',
				    '''o''',
				    '''w''',
				    '''e''',
				    '''r''',
				    '''s''',
				    '''t''',
				    '''i''',
				    '''d''',
				    '''n''',
				    '''\u0120''',
				    '''\u0120l''',
				    '''\u0120n''',
				    '''\u0120lo''',
				    '''\u0120low''',
				    '''er''',
				    '''\u0120lowest''',
				    '''\u0120newer''',
				    '''\u0120wider''',
				    '''<unk>''',
				]
				__a           =			dict(zip(_a							, range(len(_a      )      )      )      )
				__a           =			['''#version: 0.2''', '''\u0120 l''', '''\u0120l o''', '''\u0120lo w''', '''e r''', '''''']
				__a           =			{'''unk_token''': '''<unk>'''}

				__a           =			os.path.join(self.tmpdirname							, '''bart_tokenizer'''      )
				os.makedirs(_a							, exist_ok=_a      )
				__a           =			os.path.join(_a							, BART_VOCAB_FILES_NAMES['''vocab_file''']      )
				__a           =			os.path.join(_a							, BART_VOCAB_FILES_NAMES['''merges_file''']      )
				with open(self.vocab_file							, '''w'''							, encoding='''utf-8'''      ) as fp:
						fp.write(json.dumps(_a      ) + '''\n'''      )
				with open(self.merges_file							, '''w'''							, encoding='''utf-8'''      ) as fp:
						fp.write('''\n'''.join(_a      )      )

		def 			__UpperCAmelCase       (  self      ):
				return DPRQuestionEncoderTokenizer.from_pretrained(os.path.join(self.tmpdirname							, '''dpr_tokenizer'''      )      )

		def 			__UpperCAmelCase       (  self      ):
				return BartTokenizer.from_pretrained(os.path.join(self.tmpdirname							, '''bart_tokenizer'''      )      )

		def 			__UpperCAmelCase       (  self      ):
				shutil.rmtree(self.tmpdirname      )

		@require_tokenizers
		def 			__UpperCAmelCase       (  self      ):
				__a           =			os.path.join(self.tmpdirname							, '''rag_tokenizer'''      )
				__a           =			RagConfig(question_encoder=DPRConfig().to_dict()							, generator=BartConfig().to_dict()      )
				__a           =			RagTokenizer(question_encoder=self.get_dpr_tokenizer()							, generator=self.get_bart_tokenizer()      )
				rag_config.save_pretrained(_a      )
				rag_tokenizer.save_pretrained(_a      )
				__a           =			RagTokenizer.from_pretrained(_a							, config=_a      )
				self.assertIsInstance(new_rag_tokenizer.question_encoder							, _a      )
				self.assertEqual(new_rag_tokenizer.question_encoder.get_vocab()							, rag_tokenizer.question_encoder.get_vocab()      )
				self.assertIsInstance(new_rag_tokenizer.generator							, _a      )
				self.assertEqual(new_rag_tokenizer.generator.get_vocab()							, rag_tokenizer.generator.get_vocab()      )

		@slow
		def 			__UpperCAmelCase       (  self      ):
				__a           =			RagTokenizer.from_pretrained('''facebook/rag-token-nq'''      )
				__a           =			[
				    '''who got the first nobel prize in physics''',
				    '''when is the next deadpool movie being released''',
				    '''which mode is used for short wave broadcast service''',
				    '''who is the owner of reading football club''',
				    '''when is the next scandal episode coming out''',
				    '''when is the last time the philadelphia won the superbowl''',
				    '''what is the most current adobe flash player version''',
				    '''how many episodes are there in dragon ball z''',
				    '''what is the first step in the evolution of the eye''',
				    '''where is gall bladder situated in human body''',
				    '''what is the main mineral in lithium batteries''',
				    '''who is the president of usa right now''',
				    '''where do the greasers live in the outsiders''',
				    '''panda is a national animal of which country''',
				    '''what is the name of manchester united stadium''',
				]
				__a           =			tokenizer(_a      )
				self.assertIsNotNone(_a      )





		@slow
		def 			__UpperCAmelCase       (  self      ):
				__a           =			RagTokenizer.from_pretrained('''facebook/rag-sequence-nq'''      )
				__a           =			[
				    '''who got the first nobel prize in physics''',
				    '''when is the next deadpool movie being released''',
				    '''which mode is used for short wave broadcast service''',
				    '''who is the owner of reading football club''',
				    '''when is the next scandal episode coming out''',
				    '''when is the last time the philadelphia won the superbowl''',
				    '''what is the most current adobe flash player version''',
				    '''how many episodes are there in dragon ball z''',
				    '''what is the first step in the evolution of the eye''',
				    '''where is gall bladder situated in human body''',
				    '''what is the main mineral in lithium batteries''',
				    '''who is the president of usa right now''',
				    '''where do the greasers live in the outsiders''',
				    '''panda is a national animal of which country''',
				    '''what is the name of manchester united stadium''',
				]
				__a           =			tokenizer(_a      )
				self.assertIsNotNone(_a      )










'''simple docstring'''


from typing import Any





class     lowercase__  :





							'''simple docstring'''


							def __init__(    self    ,					__snake_case  ):
											_SCREAMING_SNAKE_CASE :       Dict     		=      data
											_SCREAMING_SNAKE_CASE :       Optional[int]     		=      None






							def __repr__(    self  ):
											return f"""Node({self.data})"""





class     lowercase__  :





							'''simple docstring'''


							def __init__(    self  ):
											_SCREAMING_SNAKE_CASE :       Any     		=      None






							def __iter__(    self  ):
											_SCREAMING_SNAKE_CASE :       Any     		=      self.head
											while node:
															yield node.data
															_SCREAMING_SNAKE_CASE :       List[Any]     		=      node.next






							def __len__(    self  ):
											return sum(1 for _ in self  )






							def __repr__(    self  ):
											return "->".join([str(__snake_case  ) for item in self]  )






							def __getitem__(    self    ,					__snake_case  ):
											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    ,					__snake_case    ,					__snake_case  ):
											if not 0 <= index < len(self  ):
															raise ValueError("""list index out of range."""  )
											_SCREAMING_SNAKE_CASE :       Any     		=      self.head
											for _ in range(__snake_case  ):
															_SCREAMING_SNAKE_CASE :       List[Any]     		=      current.next
											_SCREAMING_SNAKE_CASE :       Dict     		=      data






							def UpperCAmelCase_	(    self    ,					__snake_case  ):
											self.insert_nth(len(self  )    ,					__snake_case  )






							def UpperCAmelCase_	(    self    ,					__snake_case  ):
											self.insert_nth(0    ,					__snake_case  )






							def UpperCAmelCase_	(    self    ,					__snake_case    ,					__snake_case  ):
											if not 0 <= index <= len(self  ):
															raise IndexError("""list index out of range"""  )
											_SCREAMING_SNAKE_CASE :       Optional[int]     		=      Node(__snake_case  )
											if self.head is None:
															_SCREAMING_SNAKE_CASE :       str     		=      new_node
											elif index == 0:
															_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head  # link new_node to head
															_SCREAMING_SNAKE_CASE :       str     		=      new_node
											else:
															_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head
															for _ in range(index - 1  ):
																			_SCREAMING_SNAKE_CASE :       List[str]     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Tuple     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Dict     		=      new_node






							def UpperCAmelCase_	(    self  ):  # print every node data
											print(self  )






							def UpperCAmelCase_	(    self  ):
											return self.delete_nth(0  )






							def UpperCAmelCase_	(    self  ):  # delete from tail
											return self.delete_nth(len(self  ) - 1  )






							def UpperCAmelCase_	(    self    ,					__snake_case = 0  ):
											if not 0 <= index <= len(self  ) - 1:  # test if index is valid
															raise IndexError("""List index out of range."""  )
											_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head  # default first node
											if index == 0:
															_SCREAMING_SNAKE_CASE :       List[Any]     		=      self.head.next
											else:
															_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head
															for _ in range(index - 1  ):
																			_SCREAMING_SNAKE_CASE :       Any     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Any     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Union[str, Any]     		=      temp.next.next
											return delete_node.data






							def UpperCAmelCase_	(    self  ):
											return self.head is None






							def UpperCAmelCase_	(    self  ):
											_SCREAMING_SNAKE_CASE :       Dict     		=      None
											_SCREAMING_SNAKE_CASE :       int     		=      self.head

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







def 			snake_case_   (  ):







				"""simple docstring"""





				_SCREAMING_SNAKE_CASE :       Dict     		=      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     ):
								_SCREAMING_SNAKE_CASE :       List[str]     		=      -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 			snake_case_   (  ):







				"""simple docstring"""





				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      [
				    -9,
				    100,
				    Node(7734_5112     ),
				    """dlrow olleH""",
				    7,
				    5555,
				    0,
				    -1_9_2.5_5_5_5_5,
				    """Hello, world!""",
				    7_7.9,
				    Node(10     ),
				    None,
				    None,
				    1_2.2_0,
				]
				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      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
				_SCREAMING_SNAKE_CASE :       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
				_SCREAMING_SNAKE_CASE :       List[Any]     		=      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
				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      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 			snake_case_   (  ):







				"""simple docstring"""





				from doctest import testmod

				testmod()

				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      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]}"""     )
				_SCREAMING_SNAKE_CASE :       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()




