code: 
  
  
  
  
  
  
  from __future__ import annotations
  
  from typing import Generic, TypeVar
  
  lowerCamelCase										=  TypeVar('''T''')
  
  class 					snake_case_							(       Generic[T]      ):
  
  
  
  
  
  
  
     """simple docstring"""
  
  
  
     def __init__(    self:	Optional[Any]   ,       snake_case__:	T	)  ->		str:
  
  
         """simple docstring"""
  
  
  
         _lowercase     =	data  # Assign data
         _lowercase     =	None  # Initialize next as null
         _lowercase     =	None  # Initialize prev as null
  
  
  
  
  
  
  class 					snake_case_							(       Generic[T]      ):
  
  
  
  
  
  
  
     """simple docstring"""
  
  
  
     def __init__(    self:	List[str]	)  ->		None:
  
  
         """simple docstring"""
  
  
  
         _lowercase     =	None
  
     def 			SCREAMING_SNAKE_CASE__				(    self:	Optional[int]   ,       snake_case__:	T	)  ->		None:
  
  
         """simple docstring"""
  
  
  
         if self.head is None:
             _lowercase     =	Node(snake_case__	)
         else:
             _lowercase     =	Node(snake_case__	)
             _lowercase     =	new_node
             _lowercase     =	self.head
             _lowercase     =	None
             _lowercase     =	new_node
  
     def 			SCREAMING_SNAKE_CASE__				(    self:	Optional[Any]	)  ->		T | None:
  
  
         """simple docstring"""
  
  
  
         if self.head is None:
             return None
         else:
             assert self.head is not None
             _lowercase     =	self.head.data
             _lowercase     =	self.head.next
             if self.head is not None:
                 _lowercase     =	None
             return temp
  
     def 			SCREAMING_SNAKE_CASE__				(    self:	List[str]	)  ->		T | None:
  
  
         """simple docstring"""
  
  
  
         return self.head.data if self.head is not None else None
  
     def __len__(    self:	List[str]	)  ->		int:
  
  
         """simple docstring"""
  
  
  
         _lowercase     =	self.head
         _lowercase     =	0
         while temp is not None:
             count += 1
             _lowercase     =	temp.next
         return count
  
     def 			SCREAMING_SNAKE_CASE__				(    self:	Any	)  ->		bool:
  
  
         """simple docstring"""
  
  
  
         return self.head is None
  
     def 			SCREAMING_SNAKE_CASE__				(    self:	str	)  ->		None:
  
  
         """simple docstring"""
  
  
  
         print('stack elements are:'	)
         _lowercase     =	self.head
         while temp is not None:
             print(temp.data   ,       end='->'	)
             _lowercase     =	temp.next
  
  
  # Code execution starts here
  if __name__ == "__main__":
     # Start with the empty stack
     lowerCamelCase										=  Stack()
  
     # Insert 4 at the beginning. So stack becomes 4->None
     print('''Stack operations using Doubly LinkedList''')
     stack.push(4)
  
     # Insert 5 at the beginning. So stack becomes 4->5->None
     stack.push(5)
  
     # Insert 6 at the beginning. So stack becomes 4->5->6->None
     stack.push(6)
  
     # Insert 7 at the beginning. So stack becomes 4->5->6->7->None
     stack.push(7)
  
     # Print the stack
     stack.print_stack()
  
     # Print the top element
     print('''\nTop element is ''', stack.top())
  
     # Print the stack size
     print('''Size of the stack is ''', len(stack))
  
     # pop the top element
     stack.pop()
  
     # pop the top element
     stack.pop()
  
     # two elements have now been popped off
     stack.print_stack()
  
     # Print True if the stack is empty else False
     print('''\nstack is empty:''', stack.is_empty())
  
style_context: 
  
  
  
  
  
  
  from typing import List, Union
  
  from ...configuration_utils import PretrainedConfig
  from ...utils import logging
  
  
  lowerCamelCase										=  logging.get_logger(__name__)
  
  lowerCamelCase										=  {
      '''allenai/led-base-16384''': '''https://huggingface.co/allenai/led-base-16384/resolve/main/config.json''',
      # See all LED models at https://huggingface.co/models?filter=led
  }
  
  class 					snake_case_							(       lowercase_      ):
  
  
  
  
  
  
  
     """simple docstring"""
  
  
  
     __lowerCAmelCase      =						"""led"""
     __lowerCAmelCase      =						{
         """num_attention_heads""": """encoder_attention_heads""",
         """hidden_size""": """d_model""",
         """attention_probs_dropout_prob""": """attention_dropout""",
         """initializer_range""": """init_std""",
     }
  
     def __init__(    self:	int   ,       snake_case__:	str=50_265   ,       snake_case__:	Dict=16_384   ,       snake_case__:	str=1_024   ,       snake_case__:	Tuple=12   ,       snake_case__:	int=4_096   ,       snake_case__:	Union[str, Any]=16   ,       snake_case__:	int=12   ,       snake_case__:	Union[str, Any]=4_096   ,       snake_case__:	Optional[Any]=16   ,       snake_case__:	str=0.0   ,       snake_case__:	Optional[Any]=0.0   ,       snake_case__:	List[Any]=True   ,       snake_case__:	List[Any]=True   ,       snake_case__:	List[Any]="gelu"   ,       snake_case__:	Optional[int]=1_024   ,       snake_case__:	List[Any]=0.1   ,       snake_case__:	int=0.0   ,       snake_case__:	List[str]=0.0   ,       snake_case__:	List[str]=0.02   ,       snake_case__:	Dict=2   ,       snake_case__:	int=0.0   ,       snake_case__:	Optional[int]=1   ,       snake_case__:	Tuple=0   ,       snake_case__:	Union[str, Any]=2   ,       snake_case__:	Union[List[int], int] = 512   ,       **snake_case__:	int   ,       )  ->		List[Any]:
  
  
         """simple docstring"""
  
  
  
         _lowercase     =	vocab_size
         _lowercase     =	max_encoder_position_embeddings
         _lowercase     =	max_decoder_position_embeddings
         _lowercase     =	d_model
         _lowercase     =	encoder_ffn_dim
         _lowercase     =	encoder_layers
         _lowercase     =	encoder_attention_heads
         _lowercase     =	decoder_ffn_dim
         _lowercase     =	decoder_layers
         _lowercase     =	decoder_attention_heads
         _lowercase     =	dropout
         _lowercase     =	attention_dropout
         _lowercase     =	activation_dropout
         _lowercase     =	activation_function
         _lowercase     =	init_std
         _lowercase     =	encoder_layerdrop
         _lowercase     =	decoder_layerdrop
         _lowercase     =	classifier_dropout
         _lowercase     =	use_cache
         _lowercase     =	encoder_layers
         _lowercase     =	attention_window
  
         super().__init__(
             pad_token_id=snake_case__   ,       bos_token_id=snake_case__   ,       eos_token_id=snake_case__   ,       is_encoder_decoder=snake_case__   ,       decoder_start_token_id=snake_case__   ,       **snake_case__   ,       )
  