





'''simple docstring'''



from typing import Any


class    __SCREAMING_SNAKE_CASE						:



     '''simple docstring'''






     def __init__(       self    , lowerCamelCase						):
       _snake_case  		=					data
       _snake_case  		=					None






     def __repr__(       self						):
       return F'''Node({self.data})'''







class    __SCREAMING_SNAKE_CASE						:



     '''simple docstring'''






     def __init__(       self						):
       _snake_case  		=					None

     def __iter__(       self						):
       _snake_case  		=					self.head
       while node:
         yield node.data
         _snake_case  		=					node.next

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

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

     def __getitem__(       self    , lowerCamelCase						):







       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    , lowerCamelCase    , lowerCamelCase						):







       if not 0 <= index < len(self						):
         raise ValueError("list index out of range."						)
       _snake_case  		=					self.head
       for _ in range(UpperCamelCase__						):
         _snake_case  		=					current.next
       _snake_case  		=					data

     def 						UpperCamelCase(       self    , lowerCamelCase						):
       self.insert_nth(len(self						)    , UpperCamelCase__						)

     def 						UpperCamelCase(       self    , lowerCamelCase						):
       self.insert_nth(0    , UpperCamelCase__						)

     def 						UpperCamelCase(       self    , lowerCamelCase    , lowerCamelCase						):







       if not 0 <= index <= len(self						):
         raise IndexError("list index out of range"						)
       _snake_case  		=					Node(UpperCamelCase__						)
       if self.head is None:
         _snake_case  		=					new_node
       elif index == 0:
         _snake_case  		=					self.head  # link new_node to head
         _snake_case  		=					new_node
       else:
         _snake_case  		=					self.head
         for _ in range(index - 1						):
           _snake_case  		=					temp.next
         _snake_case  		=					temp.next
         _snake_case  		=					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    , lowerCamelCase = 0						):







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

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






     def 						UpperCamelCase(       self						):
       _snake_case  		=					None
       _snake_case  		=					self.head

       while current:
         # Store the current node's next node.
         _snake_case  		=					current.next
         # Make the current node's next point backwards
         _snake_case  		=					prev
         # Make the previous node be the current node
         _snake_case  		=					current
         # Make the current node the next node (to progress iteration)
         _snake_case  		=					next_node
       # Return prev in order to put the head at the end
       _snake_case  		=					prev







def 					snake_case_   (		):







  '''simple docstring'''



  _snake_case  		=					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							):
    _snake_case  		=					-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'''



  _snake_case  		=					[
      -9,
      1_00,
      Node(77_34_51_12							),
      '''dlrow olleH''',
      7,
      55_55,
      0,
      -192.55555,
      '''Hello, world!''',
      77.9,
      Node(10							),
      None,
      None,
      12.20,
  ]
  _snake_case  		=					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
  _snake_case  		=					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
  _snake_case  		=					linked_list.delete_tail()
  assert result == 12.2
  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
  _snake_case  		=					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()

  _snake_case  		=					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]}'''							)
  _snake_case  		=					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 tempfile
import unittest
from pathlib import Path
from shutil import copyfile

from transformers import MaMaaaTokenizer, is_torch_available
from transformers.testing_utils import (
    get_tests_dir,
    nested_simplify,
    require_sentencepiece,
    require_tokenizers,
    require_torch,
    slow,
)
from transformers.utils import is_sentencepiece_available


if is_sentencepiece_available():
						from transformers.models.mam_aaa.tokenization_mam_aaa import VOCAB_FILES_NAMES, save_json

from ...test_tokenization_common import TokenizerTesterMixin


if is_sentencepiece_available():
						lowercase__						       =      get_tests_dir("fixtures/test_sentencepiece.model")


if is_torch_available():
						from transformers.models.mam_aaa.modeling_mam_aaa import shift_tokens_right

lowercase__						       =      1_2_8_0_2_2
lowercase__						       =      1_2_8_0_2_8






@require_sentencepiece
class 	snake_case__       (      __SCREAMING_SNAKE_CASE    ,					unittest.TestCase					):







		"""simple docstring"""

		lowerCamelCase     							=						MaMaaaTokenizer
		lowerCamelCase     							=						False
		lowerCamelCase     							=						False
		lowerCamelCase     							=						True



		def       lowerCAmelCase				(      self				:			Dict      )						->			Optional[Any]:






				"""simple docstring"""







				super().setUp()

				snake_case  :       int     			=						['''</s>''', '''<unk>''', '''▁This''', '''▁is''', '''▁a''', '''▁t''', '''est''', '''\u0120''', '''<pad>''']
				snake_case  :       int     			=						dict(zip(UpperCamelCase__  ,	range(len(UpperCamelCase__      )      )      )      )
				snake_case  :       Optional[int]     			=						Path(self.tmpdirname      )
				save_json(UpperCamelCase__  ,	save_dir / VOCAB_FILES_NAMES['''vocab_file''']      )
				if not (save_dir / VOCAB_FILES_NAMES["spm_file"]).exists():
						copyfile(UpperCamelCase__  ,	save_dir / VOCAB_FILES_NAMES['''spm_file''']      )

				snake_case  :       Optional[int]     			=						MaMaaaTokenizer.from_pretrained(self.tmpdirname      )
				tokenizer.save_pretrained(self.tmpdirname      )



		def       lowerCAmelCase				(      self				:			Dict  ,	**UpperCamelCase__				:			Optional[int]      )						->			Any:






				"""simple docstring"""







				return MaMaaaTokenizer.from_pretrained(self.tmpdirname  ,	**UpperCamelCase__      )



		def       lowerCAmelCase				(      self				:			Tuple  ,	UpperCamelCase__				:			Tuple      )						->			str:






				"""simple docstring"""







				return (
				    "This is a test",
				    "This is a test",
				)



		def       lowerCAmelCase				(      self				:			List[str]      )						->			Optional[Any]:






				"""simple docstring"""







				snake_case  :       Optional[int]     			=						'''</s>'''
				snake_case  :       str     			=						0

				self.assertEqual(self.get_tokenizer()._convert_token_to_id(UpperCamelCase__      )  ,	UpperCamelCase__      )
				self.assertEqual(self.get_tokenizer()._convert_id_to_token(UpperCamelCase__      )  ,	UpperCamelCase__      )



		def       lowerCAmelCase				(      self				:			Dict      )						->			int:






				"""simple docstring"""







				snake_case  :       Tuple     			=						self.get_tokenizer()
				snake_case  :       Dict     			=						list(tokenizer.get_vocab().keys()      )

				self.assertEqual(vocab_keys[0]  ,	'''</s>'''      )
				self.assertEqual(vocab_keys[1]  ,	'''<unk>'''      )
				self.assertEqual(vocab_keys[-1]  ,	'''<s>'''      )
				self.assertEqual(len(UpperCamelCase__      )  ,	tokenizer.vocab_size + len(tokenizer.get_added_vocab()      )      )



		@unittest.skip('''Skip this test while all models are still to be uploaded.'''      )
		def       lowerCAmelCase				(      self				:			str      )						->			List[str]:






				"""simple docstring"""







				pass



		def       lowerCAmelCase				(      self				:			int      )						->			Union[str, Any]:






				"""simple docstring"""







				snake_case  :       Optional[Any]     			=						self.get_tokenizer()

				snake_case  :       Optional[Any]     			=						tokenizer.tokenize('''This is a test'''      )
				self.assertListEqual(UpperCamelCase__  ,	['''▁This''', '''▁is''', '''▁a''', '''▁t''', '''est''']      )

				self.assertListEqual(
				    tokenizer.convert_tokens_to_ids(UpperCamelCase__      )  ,	[2, 3, 4, 5, 6]  ,	)

				snake_case  :       Any     			=						tokenizer.convert_ids_to_tokens([2, 3, 4, 5, 6]      )
				self.assertListEqual(UpperCamelCase__  ,	['''▁This''', '''▁is''', '''▁a''', '''▁t''', '''est''']      )

				snake_case  :       Optional[int]     			=						tokenizer.convert_tokens_to_string(UpperCamelCase__      )
				self.assertEqual(UpperCamelCase__  ,	'''This is a test'''      )



		@slow
		def       lowerCAmelCase				(      self				:			Union[str, Any]      )						->			List[Any]:






				"""simple docstring"""







				snake_case  :       Tuple     			=						{'''input_ids''': [[12_8022, 11_0108, 397, 11, 3_8272, 2247, 12_4811, 285, 1_8105, 1586, 207, 7, 3_9534, 4428, 397, 1019, 1_8105, 1586, 207, 7, 4_1337, 1_6786, 241, 7, 2_0214, 17, 12_5690, 1_0398, 7, 4_4378, 5_8069, 6_8342, 7798, 7343, 11, 299, 3_3310, 4, 158, 3_7350, 9_4077, 4569, 299, 3_3310, 90, 4, 5_2840, 290, 4, 3_1270, 112, 299, 682, 4, 5_2840, 3_9953, 1_4079, 193, 5_2519, 9_0894, 1_7894, 12_0697, 11, 4_0445, 551, 17, 1019, 5_2519, 9_0894, 1_7756, 963, 11, 4_0445, 480, 17, 9792, 1120, 5173, 1393, 6240, 1_6786, 241, 12_0996, 28, 1245, 1393, 11_8240, 1_1123, 1019, 9_3612, 2691, 1_0618, 9_8058, 12_0409, 1928, 279, 4, 4_0683, 367, 178, 207, 1019, 103, 10_3121, 506, 6_5296, 5, 2], [12_8022, 2_1217, 367, 117, 12_5450, 128, 719, 7, 7308, 40, 9_3612, 1_2669, 1116, 1_6704, 71, 1_7785, 3699, 1_5592, 35, 144, 9584, 241, 1_1943, 713, 950, 799, 2247, 8_8427, 150, 149, 11_8813, 12_0706, 1019, 10_6906, 8_1518, 28, 1224, 2_2799, 397, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [12_8022, 1658, 12_3311, 5155, 5578, 4722, 279, 1_4947, 2366, 1120, 1197, 14, 1348, 9232, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]], '''attention_mask''': [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]}  # noqa: E501
				# fmt: on

				self.tokenizer_integration_test_util(
				    expected_encoding=UpperCamelCase__  ,	model_name='''facebook/m2m100_418M'''  ,	revision='''c168bae485c864188cf9aa0e4108b0b6934dc91e'''  ,	)







@require_torch
@require_sentencepiece
@require_tokenizers
class 	snake_case__       (      unittest.TestCase					):







		"""simple docstring"""

		lowerCamelCase     							=						"""facebook/m2m100_418M"""
		lowerCamelCase     							=						[
		    """In my opinion, there are two levels of response from the French government.""",
		    """NSA Affair Emphasizes Complete Lack of Debate on Intelligence""",
		]
		lowerCamelCase     							=						[
		    """Selon moi, il y a deux niveaux de réponse de la part du gouvernement français.""",
		    """L'affaire NSA souligne l'absence totale de débat sur le renseignement""",
		]

		# fmt: off
		lowerCamelCase     							=						[EN_CODE, 593, 1949, 115781, 4, 71586, 4234, 60633, 126233, 432, 123808, 15592, 1197, 117132, 120618, 5, 2]



		@classmethod
		def       lowerCAmelCase				(      cls				:			List[Any]      )						->			int:






				"""simple docstring"""







				snake_case  :       MaMaaaTokenizer     			=						MaMaaaTokenizer.from_pretrained(
				    cls.checkpoint_name  ,	src_lang='''en'''  ,	tgt_lang='''fr'''      )
				snake_case  :       List[str]     			=						1
				return cls



		def       lowerCAmelCase				(      self				:			Union[str, Any]      )						->			str:






				"""simple docstring"""







				self.assertEqual(self.tokenizer.get_lang_id('''ar'''      )  ,	12_8006      )
				self.assertEqual(self.tokenizer.get_lang_id('''en'''      )  ,	12_8022      )
				self.assertEqual(self.tokenizer.get_lang_id('''ro'''      )  ,	12_8076      )
				self.assertEqual(self.tokenizer.get_lang_id('''mr'''      )  ,	12_8063      )



		def       lowerCAmelCase				(      self				:			Any      )						->			Dict:






				"""simple docstring"""







				snake_case  :       List[str]     			=						self.tokenizer.get_vocab()
				self.assertEqual(len(UpperCamelCase__      )  ,	self.tokenizer.vocab_size      )
				self.assertEqual(vocab['''<unk>''']  ,	3      )
				self.assertIn(self.tokenizer.get_lang_token('''en'''      )  ,	UpperCamelCase__      )



		def       lowerCAmelCase				(      self				:			Optional[Any]      )						->			List[Any]:






				"""simple docstring"""







				snake_case  :       Dict     			=						'''en'''
				snake_case  :       Dict     			=						self.tokenizer.batch_encode_plus(self.src_text      ).input_ids[0]
				self.assertListEqual(self.expected_src_tokens  ,	UpperCamelCase__      )



		def       lowerCAmelCase				(      self				:			List[str]      )						->			List[Any]:






				"""simple docstring"""







				self.assertIn(UpperCamelCase__  ,	self.tokenizer.all_special_ids      )
				# fmt: off
				snake_case  :       str     			=						[FR_CODE, 5364, 82, 8642, 4, 294, 47, 8, 1_4028, 136, 3286, 9706, 6, 9_0797, 6, 14_4012, 162, 8_8128, 3_0061, 5, 2]
				# fmt: on
				snake_case  :       int     			=						self.tokenizer.decode(UpperCamelCase__  ,	skip_special_tokens=UpperCamelCase__      )
				snake_case  :       List[Any]     			=						self.tokenizer.decode(generated_ids[1:]  ,	skip_special_tokens=UpperCamelCase__      )
				self.assertEqual(UpperCamelCase__  ,	UpperCamelCase__      )
				self.assertNotIn(self.tokenizer.eos_token  ,	UpperCamelCase__      )



		def       lowerCAmelCase				(      self				:			Optional[int]      )						->			Tuple:






				"""simple docstring"""







				snake_case  :       Union[str, Any]     			=						tempfile.mkdtemp()
				snake_case  :       Union[str, Any]     			=						self.tokenizer.lang_token_to_id
				self.tokenizer.save_pretrained(UpperCamelCase__      )
				snake_case  :       Optional[int]     			=						MaMaaaTokenizer.from_pretrained(UpperCamelCase__      )
				self.assertDictEqual(new_tok.lang_token_to_id  ,	UpperCamelCase__      )



		@require_torch
		def       lowerCAmelCase				(      self				:			Optional[Any]      )						->			Union[str, Any]:






				"""simple docstring"""







				snake_case  :       Optional[Any]     			=						'''en'''
				snake_case  :       int     			=						'''fr'''

				snake_case  :       Dict     			=						self.tokenizer(self.src_text  ,	text_target=self.tgt_text  ,	padding=UpperCamelCase__  ,	return_tensors='''pt'''      )

				snake_case  :       List[str]     			=						shift_tokens_right(
				    batch['''labels''']  ,	self.tokenizer.pad_token_id  ,	self.tokenizer.eos_token_id      )

				for k in batch:
						snake_case  :       Tuple     			=						batch[k].tolist()
				# batch = {k: v.tolist() for k,v in batch.items()}
				# fairseq batch: https://gist.github.com/sshleifer/cba08bc2109361a74ac3760a7e30e4f4
				# batch.decoder_inputs_ids[0][0] ==
				assert batch.input_ids[1][0] == EN_CODE
				assert batch.input_ids[1][-1] == 2
				assert batch.labels[1][0] == FR_CODE
				assert batch.labels[1][-1] == 2
				assert batch.decoder_input_ids[1][:2] == [2, FR_CODE]



		@require_torch
		def       lowerCAmelCase				(      self				:			int      )						->			Union[str, Any]:






				"""simple docstring"""







				snake_case  :       List[str]     			=						'''mr'''
				self.assertListEqual(self.tokenizer.prefix_tokens  ,	[self.tokenizer.get_lang_id('''mr'''      )]      )
				self.assertListEqual(self.tokenizer.suffix_tokens  ,	[self.tokenizer.eos_token_id]      )

				snake_case  :       Optional[int]     			=						'''zh'''
				self.assertListEqual(self.tokenizer.prefix_tokens  ,	[self.tokenizer.get_lang_id('''zh'''      )]      )
				self.assertListEqual(self.tokenizer.suffix_tokens  ,	[self.tokenizer.eos_token_id]      )



		@require_torch
		def       lowerCAmelCase				(      self				:			Union[str, Any]      )						->			Dict:






				"""simple docstring"""







				snake_case  :       List[Any]     			=						'''mr'''
				self.tokenizer._switch_to_target_mode()
				self.assertListEqual(self.tokenizer.prefix_tokens  ,	[self.tokenizer.get_lang_id('''mr'''      )]      )
				self.assertListEqual(self.tokenizer.suffix_tokens  ,	[self.tokenizer.eos_token_id]      )
				self.tokenizer._switch_to_input_mode()
				self.assertListEqual(self.tokenizer.prefix_tokens  ,	[self.tokenizer.get_lang_id(self.tokenizer.src_lang      )]      )

				snake_case  :       List[str]     			=						'''zh'''
				self.tokenizer._switch_to_target_mode()
				self.assertListEqual(self.tokenizer.prefix_tokens  ,	[self.tokenizer.get_lang_id('''zh'''      )]      )
				self.assertListEqual(self.tokenizer.suffix_tokens  ,	[self.tokenizer.eos_token_id]      )
				self.tokenizer._switch_to_input_mode()
				self.assertListEqual(self.tokenizer.prefix_tokens  ,	[self.tokenizer.get_lang_id(self.tokenizer.src_lang      )]      )



		@require_torch
		def       lowerCAmelCase				(      self				:			Tuple      )						->			str:






				"""simple docstring"""







				snake_case  :       int     			=						self.tokenizer._build_translation_inputs('''A test'''  ,	return_tensors='''pt'''  ,	src_lang='''en'''  ,	tgt_lang='''ar'''      )

				self.assertEqual(
				    nested_simplify(UpperCamelCase__      )  ,	{
				        # en_XX, A, test, EOS
				        '''input_ids''': [[12_8022, 58, 4183, 2]],
				        '''attention_mask''': [[1, 1, 1, 1]],
				        # ar_AR
				        '''forced_bos_token_id''': 12_8006,
				    }  ,	)


