






class 	snake_case__ :
	def __init__(    self      ,       lowerCAmelCase__      ,       lowerCAmelCase__=None      ,       lowerCAmelCase__=None			)							->				Tuple:
							__magic_name__      :       int       						= data
							__magic_name__      :       Dict       						= previous
							__magic_name__      :       str       						= next_node
	def __str__(    self			)							->				str:
							return F'{self.data}'
	def       __magic_name__    (    self			)							->				int:
							return self.data
	def       __magic_name__    (    self			)							->				Optional[int]:
							return self.next







	def       __magic_name__    (    self			)							->				Any:
							return self.previous





class 	snake_case__ :
	def __init__(    self      ,       lowerCAmelCase__			)							->				int:
							__magic_name__      :       Tuple       						= head
	def __iter__(    self			)							->				Union[str, Any]:
							return self







	def       __magic_name__    (    self			)							->				Dict:
							if not self.current:
													raise StopIteration
							else:
													__magic_name__      :       Union[str, Any]       						= self.current.get_data()
													__magic_name__      :       Any       						= self.current.get_next()
													return value





class 	snake_case__ :
	def __init__(    self			)							->				Tuple:
							__magic_name__      :       Tuple       						= None  # First node in list
							__magic_name__      :       List[Any]       						= None  # Last node in list
	def __str__(    self			)							->				List[Any]:
							__magic_name__      :       Any       						= self.head
							__magic_name__      :       List[Any]       						= []
							while current is not None:
													nodes.append(current.get_data()			)
													__magic_name__      :       Optional[Any]       						= current.get_next()
							return " ".join(str(lowerCAmelCase__			) for node in nodes			)
	def __contains__(    self      ,       lowerCAmelCase__			)							->				Optional[int]:
							__magic_name__      :       int       						= self.head
							while current:
													if current.get_data() == value:
																			return True
													__magic_name__      :       int       						= current.get_next()
							return False
	def __iter__(    self			)							->				int:
							return LinkedListIterator(self.head			)
	def       __magic_name__    (    self			)							->				List[str]:
							if self.head:
													return self.head.get_data()
							return None
	def       __magic_name__    (    self			)							->				Tuple:
							if self.tail:
													return self.tail.get_data()
							return None
	def       __magic_name__    (    self      ,       lowerCAmelCase__			)							->				None:
							if self.head is None:
													__magic_name__      :       Any       						= node
													__magic_name__      :       Tuple       						= node
							else:
													self.insert_before_node(self.head      ,       lowerCAmelCase__			)
	def       __magic_name__    (    self      ,       lowerCAmelCase__			)							->				None:
							if self.head is None:
													self.set_head(lowerCAmelCase__			)
							else:
													self.insert_after_node(self.tail      ,       lowerCAmelCase__			)
	def       __magic_name__    (    self      ,       lowerCAmelCase__			)							->				None:
							__magic_name__      :       Optional[Any]       						= Node(lowerCAmelCase__			)
							if self.head is None:
													self.set_head(lowerCAmelCase__			)
							else:
													self.set_tail(lowerCAmelCase__			)
	def       __magic_name__    (    self      ,       lowerCAmelCase__      ,       lowerCAmelCase__			)							->				None:
							__magic_name__      :       Tuple       						= node
							__magic_name__      :       Tuple       						= node.previous

							if node.get_previous() is None:
													__magic_name__      :       Any       						= node_to_insert
							else:
													__magic_name__      :       List[str]       						= node_to_insert

							__magic_name__      :       List[Any]       						= node_to_insert
	def       __magic_name__    (    self      ,       lowerCAmelCase__      ,       lowerCAmelCase__			)							->				None:
							__magic_name__      :       int       						= node
							__magic_name__      :       Union[str, Any]       						= node.next

							if node.get_next() is None:
													__magic_name__      :       Tuple       						= node_to_insert
							else:
													__magic_name__      :       int       						= node_to_insert

							__magic_name__      :       Optional[int]       						= node_to_insert
	def       __magic_name__    (    self      ,       lowerCAmelCase__      ,       lowerCAmelCase__			)							->				None:
							__magic_name__      :       Any       						= 1
							__magic_name__      :       List[Any]       						= Node(lowerCAmelCase__			)
							__magic_name__      :       List[Any]       						= self.head
							while node:
													if current_position == position:
																			self.insert_before_node(lowerCAmelCase__      ,       lowerCAmelCase__			)
																			return
													current_position += 1
													__magic_name__      :       List[str]       						= node.next
							self.insert_after_node(self.tail      ,       lowerCAmelCase__			)
	def       __magic_name__    (    self      ,       lowerCAmelCase__			)							->				Node:
							__magic_name__      :       Optional[int]       						= self.head
							while node:
													if node.get_data() == item:
																			return node
													__magic_name__      :       List[str]       						= node.get_next()
							raise Exception("""Node not found"""			)
	def       __magic_name__    (    self      ,       lowerCAmelCase__			)							->				Tuple:
							if (node := self.get_node(lowerCAmelCase__			)) is not None:
													if node == self.head:
																			__magic_name__      :       List[Any]       						= self.head.get_next()

													if node == self.tail:
																			__magic_name__      :       Dict       						= self.tail.get_previous()

													self.remove_node_pointers(lowerCAmelCase__			)
	@staticmethod
	def       __magic_name__    (    lowerCAmelCase__			)							->				None:
							if node.get_next():
													__magic_name__      :       Optional[Any]       						= node.previous

							if node.get_previous():
													__magic_name__      :       Dict       						= node.next

							__magic_name__      :       Dict       						= None
							__magic_name__      :       Optional[int]       						= None







	def       __magic_name__    (    self			)							->				List[str]:
							return self.head is None



def    UpperCamelCase						(	):






						"""simple docstring"""









if __name__ == "__main__":
		import doctest

		doctest.testmod()








__magic_name__:					List[Any]							=     "\n# Transformers 설치 방법\n! pip install transformers datasets\n# 마지막 릴리스 대신 소스에서 설치하려면, 위 명령을 주석으로 바꾸고 아래 명령을 해제하세요.\n# ! pip install git+https://github.com/huggingface/transformers.git\n"

__magic_name__:					Dict							=     [{"type": "code", "content": INSTALL_CONTENT}]
__magic_name__:					Optional[Any]							=     {
    "{processor_class}": "FakeProcessorClass",
    "{model_class}": "FakeModelClass",
    "{object_class}": "FakeObjectClass",
}
