




"""simple docstring"""
class  _SCREAMING_SNAKE_CASE       :



 '''simple docstring'''





 def __init__(self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	Dict					      =  data
  _UpperCamelCase      :	Dict					      =  None
  _UpperCamelCase      :	Optional[int]					      =  None






 def __str__(self   ):

  '''simple docstring'''







  return F"{self.data}"







class  _SCREAMING_SNAKE_CASE       :



 '''simple docstring'''





 def __init__(self   ):

  '''simple docstring'''







  _UpperCamelCase      :	int					      =  None
  _UpperCamelCase      :	Dict					      =  None






 def __iter__(self   ):

  '''simple docstring'''







  _UpperCamelCase      :	Any					      =  self.head
  while node:
   yield node.data
   _UpperCamelCase      :	Tuple					      =  node.next






 def __str__(self   ):

  '''simple docstring'''







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






 def __len__(self   ):

  '''simple docstring'''







  return sum(1 for _ in self   )






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  self.insert_at_nth(0					,     snake_case__   )






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  self.insert_at_nth(len(self   )					,     snake_case__   )






 def lowercase_      (self					,     lowerCAmelCase__					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	Dict					      =  len(self   )

  if not 0 <= index <= length:
   raise IndexError("list index out of range"   )
  _UpperCamelCase      :	Dict					      =  Node(snake_case__   )
  if self.head is None:
   _UpperCamelCase      :	Any					      =  new_node
  elif index == 0:
   _UpperCamelCase      :	Dict					      =  new_node
   _UpperCamelCase      :	List[str]					      =  self.head
   _UpperCamelCase      :	Any					      =  new_node
  elif index == length:
   _UpperCamelCase      :	List[str]					      =  new_node
   _UpperCamelCase      :	int					      =  self.tail
   _UpperCamelCase      :	List[str]					      =  new_node
  else:
   _UpperCamelCase      :	Optional[Any]					      =  self.head
   for _ in range(0					,     snake_case__   ):
    _UpperCamelCase      :	Dict					      =  temp.next
   _UpperCamelCase      :	Tuple					      =  new_node
   _UpperCamelCase      :	Union[str, Any]					      =  temp.previous
   _UpperCamelCase      :	int					      =  temp
   _UpperCamelCase      :	Optional[int]					      =  new_node






 def lowercase_      (self   ):

  '''simple docstring'''







  return self.delete_at_nth(0   )






 def lowercase_      (self   ):

  '''simple docstring'''







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






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	Optional[Any]					      =  len(self   )

  if not 0 <= index <= length - 1:
   raise IndexError("list index out of range"   )
  _UpperCamelCase      :	List[Any]					      =  self.head  # default first node
  if length == 1:
   _UpperCamelCase      :	int					      =  None
  elif index == 0:
   _UpperCamelCase      :	str					      =  self.head.next
   _UpperCamelCase      :	Dict					      =  None
  elif index == length - 1:
   _UpperCamelCase      :	int					      =  self.tail
   _UpperCamelCase      :	Dict					      =  self.tail.previous
   _UpperCamelCase      :	str					      =  None
  else:
   _UpperCamelCase      :	str					      =  self.head
   for _ in range(0					,     snake_case__   ):
    _UpperCamelCase      :	Dict					      =  temp.next
   _UpperCamelCase      :	Tuple					      =  temp
   _UpperCamelCase      :	List[str]					      =  temp.previous
   _UpperCamelCase      :	Tuple					      =  temp.next
  return delete_node.data






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	Dict					      =  self.head

  while current.data != data:  # Find the position to delete
   if current.next:
    _UpperCamelCase      :	str					      =  current.next
   else:  # We have reached the end an no value matches
    raise ValueError("No data matching given value"   )

  if current == self.head:
   self.delete_head()

  elif current == self.tail:
   self.delete_tail()

  else:  # Before: 1 <--> 2(current) <--> 3
   _UpperCamelCase      :	Optional[Any]					      =  current.next  # 1 --> 3
   _UpperCamelCase      :	str					      =  current.previous  # 1 <--> 3
  return data






 def lowercase_      (self   ):

  '''simple docstring'''







  return len(self   ) == 0






def 				__lowerCAmelCase					(					)    ->       None:
 _UpperCamelCase      :	str					      =  DoublyLinkedList()
 assert linked_list.is_empty() is True
 assert str(_A						) == ""

 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(_A						) == i
  linked_list.insert_at_nth(_A  ,	i + 1						)
 assert str(_A						) == "->".join(str(_A						) for i in range(1  ,	11						)						)

 linked_list.insert_at_head(0						)
 linked_list.insert_at_tail(11						)
 assert str(_A						) == "->".join(str(_A						) for i in range(0  ,	12						)						)

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


if __name__ == "__main__":
    from doctest import testmod

    testmod()







'''simple docstring'''




from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_sentencepiece_available, is_tokenizers_available


_lowerCAmelCase	:		Dict		  =						{}

try:
				if not is_sentencepiece_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				_lowerCAmelCase	:		Union[str, Any]		  =						['BarthezTokenizer']

try:
				if not is_tokenizers_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				_lowerCAmelCase	:		Union[str, Any]		  =						['BarthezTokenizerFast']


if TYPE_CHECKING:
				try:
								if not is_sentencepiece_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .tokenization_barthez import BarthezTokenizer

				try:
								if not is_tokenizers_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .tokenization_barthez_fast import BarthezTokenizerFast

else:
				import sys

				_lowerCAmelCase	:		List[str]		  =						_LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)
