


class 						A__							:




						def __init__(       self					:      Dict				,    _a					:      int				,    _a					:      Tuple=None				,    _a					:      int=None  )							->     List[Any]:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =data
										_SCREAMING_SNAKE_CASE			  =previous
										_SCREAMING_SNAKE_CASE			  =next_node




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


										"""simple docstring"""





										return f"{self.data}"




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


										"""simple docstring"""





										return self.data




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


										"""simple docstring"""





										return self.next




						def 							__UpperCamelCase				(       self					:      str  )							->     str:


										"""simple docstring"""





										return self.previous

class 						A__							:




						def __init__(       self					:      Dict				,    _a					:      Dict  )							->     Optional[Any]:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =head




						def __iter__(       self					:      Optional[int]  )							->     Dict:


										"""simple docstring"""





										return self




						def 							__UpperCamelCase				(       self					:      Any  )							->     Optional[Any]:


										"""simple docstring"""





										if not self.current:
														raise StopIteration
										else:
														_SCREAMING_SNAKE_CASE			  =self.current.get_data()
														_SCREAMING_SNAKE_CASE			  =self.current.get_next()
														return value

class 						A__							:




						def __init__(       self					:      List[Any]  )							->     Tuple:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =None  # First node in list
										_SCREAMING_SNAKE_CASE			  =None  # Last node in list




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


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =self.head
										_SCREAMING_SNAKE_CASE			  =[]
										while current is not None:
														nodes.append(current.get_data()  )
														_SCREAMING_SNAKE_CASE			  =current.get_next()
										return " ".join(str(_a  ) for node in nodes  )




						def __contains__(       self					:      List[str]				,    _a					:      int  )							->     Optional[int]:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =self.head
										while current:
														if current.get_data() == value:
																		return True
														_SCREAMING_SNAKE_CASE			  =current.get_next()
										return False




						def __iter__(       self					:      List[Any]  )							->     Any:


										"""simple docstring"""





										return LinkedListIterator(self.head  )




						def 							__UpperCamelCase				(       self					:      List[str]  )							->     str:


										"""simple docstring"""





										if self.head:
														return self.head.get_data()
										return None




						def 							__UpperCamelCase				(       self					:      Dict  )							->     Optional[int]:


										"""simple docstring"""





										if self.tail:
														return self.tail.get_data()
										return None




						def 							__UpperCamelCase				(       self					:      str				,    _a					:      Node  )							->     None:


										"""simple docstring"""





										if self.head is None:
														_SCREAMING_SNAKE_CASE			  =node
														_SCREAMING_SNAKE_CASE			  =node
										else:
														self.insert_before_node(self.head				,    _a  )




						def 							__UpperCamelCase				(       self					:      Optional[int]				,    _a					:      Node  )							->     None:


										"""simple docstring"""





										if self.head is None:
														self.set_head(_a  )
										else:
														self.insert_after_node(self.tail				,    _a  )




						def 							__UpperCamelCase				(       self					:      List[str]				,    _a					:      int  )							->     None:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =Node(_a  )
										if self.head is None:
														self.set_head(_a  )
										else:
														self.set_tail(_a  )




						def 							__UpperCamelCase				(       self					:      int				,    _a					:      Node				,    _a					:      Node  )							->     None:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =node
										_SCREAMING_SNAKE_CASE			  =node.previous

										if node.get_previous() is None:
														_SCREAMING_SNAKE_CASE			  =node_to_insert
										else:
														_SCREAMING_SNAKE_CASE			  =node_to_insert

										_SCREAMING_SNAKE_CASE			  =node_to_insert




						def 							__UpperCamelCase				(       self					:      List[str]				,    _a					:      Node				,    _a					:      Node  )							->     None:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =node
										_SCREAMING_SNAKE_CASE			  =node.next

										if node.get_next() is None:
														_SCREAMING_SNAKE_CASE			  =node_to_insert
										else:
														_SCREAMING_SNAKE_CASE			  =node_to_insert

										_SCREAMING_SNAKE_CASE			  =node_to_insert




						def 							__UpperCamelCase				(       self					:      Union[str, Any]				,    _a					:      int				,    _a					:      int  )							->     None:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =1
										_SCREAMING_SNAKE_CASE			  =Node(_a  )
										_SCREAMING_SNAKE_CASE			  =self.head
										while node:
														if current_position == position:
																		self.insert_before_node(_a				,    _a  )
																		return
														current_position += 1
														_SCREAMING_SNAKE_CASE			  =node.next
										self.insert_after_node(self.tail				,    _a  )




						def 							__UpperCamelCase				(       self					:      Dict				,    _a					:      int  )							->     Node:


										"""simple docstring"""





										_SCREAMING_SNAKE_CASE			  =self.head
										while node:
														if node.get_data() == item:
																		return node
														_SCREAMING_SNAKE_CASE			  =node.get_next()
										raise Exception('''Node not found'''  )




						def 							__UpperCamelCase				(       self					:      Optional[int]				,    _a					:      Optional[Any]  )							->     Dict:


										"""simple docstring"""





										if (node := self.get_node(_a  )) is not None:
														if node == self.head:
																		_SCREAMING_SNAKE_CASE			  =self.head.get_next()

														if node == self.tail:
																		_SCREAMING_SNAKE_CASE			  =self.tail.get_previous()

														self.remove_node_pointers(_a  )




						@staticmethod
						def 							__UpperCamelCase				(       _a					:      Node  )							->     None:


										"""simple docstring"""





										if node.get_next():
														_SCREAMING_SNAKE_CASE			  =node.previous

										if node.get_previous():
														_SCREAMING_SNAKE_CASE			  =node.next

										_SCREAMING_SNAKE_CASE			  =None
										_SCREAMING_SNAKE_CASE			  =None




						def 							__UpperCamelCase				(       self					:      Optional[Any]  )							->     Optional[Any]:


										"""simple docstring"""





										return self.head is None







def 						lowerCamelCase(   ):
				pass


if __name__ == "__main__":
							import doctest

							doctest.testmod()



from typing import TYPE_CHECKING

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


snake_case_						:			List[Any]													=							{
    '''configuration_graphormer''': ['''GRAPHORMER_PRETRAINED_CONFIG_ARCHIVE_MAP''', '''GraphormerConfig'''],
}

try:
							if not is_torch_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							snake_case_						:			str													=							[
							    '''GRAPHORMER_PRETRAINED_MODEL_ARCHIVE_LIST''',
							    '''GraphormerForGraphClassification''',
							    '''GraphormerModel''',
							    '''GraphormerPreTrainedModel''',
							]


if TYPE_CHECKING:
							from .configuration_graphormer import GRAPHORMER_PRETRAINED_CONFIG_ARCHIVE_MAP, GraphormerConfig

							try:
														if not is_torch_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_graphormer import (
														    GRAPHORMER_PRETRAINED_MODEL_ARCHIVE_LIST,
														    GraphormerForGraphClassification,
														    GraphormerModel,
														    GraphormerPreTrainedModel,
														)


else:
							import sys

							snake_case_						:			Union[str, Any]													=							_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)