code: 
  
  
  
  class        lowerCAmelCase_	:
         def __init__(    self,    SCREAMING_SNAKE_CASE_ )  ->	int:
            UpperCamelCase					:						Union[str, Any]					=			data
            UpperCamelCase					:						Optional[Any]					=			None
            UpperCamelCase					:						Any					=			None
  
  
  
  
  
  
         def __str__(    self )  ->	Optional[Any]:
            return F"""{self.data}"""
  
  
  
  
  
  
  class        lowerCAmelCase_	:
         def __init__(    self )  ->	Any:
            UpperCamelCase					:						Tuple					=			None
            UpperCamelCase					:						Union[str, Any]					=			None
         def __iter__(    self )  ->	Optional[int]:
            UpperCamelCase					:						Any					=			self.head
            while node:
               yield node.data
               UpperCamelCase					:						Tuple					=			node.next
         def __str__(    self )  ->	str:
            return "->".join([str(SCREAMING_SNAKE_CASE_ ) for item in self] )
         def __len__(    self )  ->	List[str]:
            return sum(1 for _ in self )
         def       snake_case_ (    self,    SCREAMING_SNAKE_CASE_ )  ->	List[Any]:
            self.insert_at_nth(0,    SCREAMING_SNAKE_CASE_ )
         def       snake_case_ (    self,    SCREAMING_SNAKE_CASE_ )  ->	Optional[Any]:
            self.insert_at_nth(len(self ),    SCREAMING_SNAKE_CASE_ )
         def       snake_case_ (    self,    SCREAMING_SNAKE_CASE_,    SCREAMING_SNAKE_CASE_ )  ->	Dict:
            UpperCamelCase					:						List[str]					=			len(self )
  
            if not 0 <= index <= length:
               raise IndexError('list index out of range' )
            UpperCamelCase					:						Tuple					=			Node(SCREAMING_SNAKE_CASE_ )
            if self.head is None:
               UpperCamelCase					:						Tuple					=			new_node
            elif index == 0:
               UpperCamelCase					:						Tuple					=			new_node
               UpperCamelCase					:						Optional[Any]					=			self.head
               UpperCamelCase					:						Optional[Any]					=			new_node
            elif index == length:
               UpperCamelCase					:						Optional[int]					=			new_node
               UpperCamelCase					:						Any					=			self.tail
               UpperCamelCase					:						int					=			new_node
            else:
               UpperCamelCase					:						Union[str, Any]					=			self.head
               for _ in range(0,    SCREAMING_SNAKE_CASE_ ):
                  UpperCamelCase					:						Union[str, Any]					=			temp.next
               UpperCamelCase					:						List[Any]					=			new_node
               UpperCamelCase					:						Dict					=			temp.previous
               UpperCamelCase					:						List[str]					=			temp
               UpperCamelCase					:						List[str]					=			new_node
         def       snake_case_ (    self )  ->	Tuple:
            return self.delete_at_nth(0 )
         def       snake_case_ (    self )  ->	Union[str, Any]:
            return self.delete_at_nth(len(self ) - 1 )
         def       snake_case_ (    self,    SCREAMING_SNAKE_CASE_ )  ->	str:
            UpperCamelCase					:						Optional[Any]					=			len(self )
  
            if not 0 <= index <= length - 1:
               raise IndexError('list index out of range' )
            UpperCamelCase					:						Tuple					=			self.head  # default first node
            if length == 1:
               UpperCamelCase					:						Optional[int]					=			None
            elif index == 0:
               UpperCamelCase					:						str					=			self.head.next
               UpperCamelCase					:						List[Any]					=			None
            elif index == length - 1:
               UpperCamelCase					:						Tuple					=			self.tail
               UpperCamelCase					:						Tuple					=			self.tail.previous
               UpperCamelCase					:						int					=			None
            else:
               UpperCamelCase					:						Union[str, Any]					=			self.head
               for _ in range(0,    SCREAMING_SNAKE_CASE_ ):
                  UpperCamelCase					:						Any					=			temp.next
               UpperCamelCase					:						Dict					=			temp
               UpperCamelCase					:						str					=			temp.previous
               UpperCamelCase					:						List[Any]					=			temp.next
            return delete_node.data
         def       snake_case_ (    self,    SCREAMING_SNAKE_CASE_ )  ->	str:
            UpperCamelCase					:						Dict					=			self.head
  
            while current.data != data:  # Find the position to delete
               if current.next:
                  UpperCamelCase					:						List[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[int]					=			current.next  # 1 --> 3
               UpperCamelCase					:						Any					=			current.previous  # 1 <--> 3
            return data
  
  
  
  
  
  
         def       snake_case_ (    self )  ->	List[str]:
            return len(self ) == 0
  
  
  
  
  
  
  def 	UpperCamelCase			(     )			->  None:
     UpperCamelCase					:						Any					=			DoublyLinkedList()
     assert linked_list.is_empty() is True
     assert str(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(snake_case__			) == i
        linked_list.insert_at_nth(snake_case__ ,  i + 1			)
     assert str(snake_case__			) == "->".join(str(snake_case__			) for i in range(1 ,  11			)			)
  
     linked_list.insert_at_head(0			)
     linked_list.insert_at_tail(11			)
     assert str(snake_case__			) == "->".join(str(snake_case__			) 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(snake_case__			) == 9
     assert str(snake_case__			) == "->".join(str(snake_case__			) for i in range(1 ,  10			)			)
  
  
  if __name__ == "__main__":
      from doctest import testmod
  
      testmod()
  
  
  
  
style_context: 
  
  
  
  from ...configuration_utils import PretrainedConfig
  from ...utils import logging
  
  
  __UpperCAmelCase      = logging.get_logger(__name__)
  
  __UpperCAmelCase      = {
      '''microsoft/mpnet-base''': '''https://huggingface.co/microsoft/mpnet-base/resolve/main/config.json''',
  }
  
  
  
  class        lowerCAmelCase_	(						a__							):
         UpperCAmelCase__       :      Union[str, Any]       =						"mpnet"
         def __init__(    self,    SCREAMING_SNAKE_CASE_=3_0527,    SCREAMING_SNAKE_CASE_=768,    SCREAMING_SNAKE_CASE_=12,    SCREAMING_SNAKE_CASE_=12,    SCREAMING_SNAKE_CASE_=3072,    SCREAMING_SNAKE_CASE_="gelu",    SCREAMING_SNAKE_CASE_=0.1,    SCREAMING_SNAKE_CASE_=0.1,    SCREAMING_SNAKE_CASE_=512,    SCREAMING_SNAKE_CASE_=0.02,    SCREAMING_SNAKE_CASE_=1e-12,    SCREAMING_SNAKE_CASE_=32,    SCREAMING_SNAKE_CASE_=1,    SCREAMING_SNAKE_CASE_=0,    SCREAMING_SNAKE_CASE_=2,    **SCREAMING_SNAKE_CASE_,    )  ->	Optional[int]:
            super().__init__(pad_token_id=SCREAMING_SNAKE_CASE_,    bos_token_id=SCREAMING_SNAKE_CASE_,    eos_token_id=SCREAMING_SNAKE_CASE_,    **SCREAMING_SNAKE_CASE_ )
  
            UpperCamelCase					:						Any					=			vocab_size
            UpperCamelCase					:						Optional[Any]					=			hidden_size
            UpperCamelCase					:						Union[str, Any]					=			num_hidden_layers
            UpperCamelCase					:						Optional[int]					=			num_attention_heads
            UpperCamelCase					:						Optional[Any]					=			hidden_act
            UpperCamelCase					:						str					=			intermediate_size
            UpperCamelCase					:						Optional[Any]					=			hidden_dropout_prob
            UpperCamelCase					:						Union[str, Any]					=			attention_probs_dropout_prob
            UpperCamelCase					:						List[Any]					=			max_position_embeddings
            UpperCamelCase					:						Union[str, Any]					=			initializer_range
            UpperCamelCase					:						List[str]					=			layer_norm_eps
            UpperCamelCase					:						str					=			relative_attention_num_buckets
  
  
  
  