


class 		_snake_case  :




 def __init__(		self ,  _lowerCamelCase ,  _lowerCamelCase=None ,  _lowerCamelCase=None   ):
       a						:int										=	data
       a						:List[str]										=	previous
       a						:Optional[int]										=	next_node




 def __str__(		self   ):
       return F'''{self.data}'''




 def 	SCREAMING_SNAKE_CASE__    (		self   ):
       return self.data




 def 	SCREAMING_SNAKE_CASE__    (		self   ):
       return self.next




 def 	SCREAMING_SNAKE_CASE__    (		self   ):
       return self.previous







class 		_snake_case  :




 def __init__(		self ,  _lowerCamelCase   ):
       a						:List[str]										=	head




 def __iter__(		self   ):
       return self




 def 	SCREAMING_SNAKE_CASE__    (		self   ):
       if not self.current:
             raise StopIteration
       else:
             a						:Union[str, Any]										=	self.current.get_data()
             a						:Optional[Any]										=	self.current.get_next()
             return value







class 		_snake_case  :




 def __init__(		self   ):
       a						:Any										=	None  # First node in list
       a						:Dict										=	None  # Last node in list




 def __str__(		self   ):
       a						:List[str]										=	self.head
       a						:str										=	[]
       while current is not None:
             nodes.append(current.get_data()   )
             a						:Tuple										=	current.get_next()
       return " ".join(str(_lowerCamelCase   ) for node in nodes   )




 def __contains__(		self ,  _lowerCamelCase   ):
       a						:str										=	self.head
       while current:
             if current.get_data() == value:
                   return True
             a						:List[str]										=	current.get_next()
       return False




 def __iter__(		self   ):
       return LinkedListIterator(self.head   )




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




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




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase   ):
       if self.head is None:
             a						:Optional[int]										=	node
             a						:Union[str, Any]										=	node
       else:
             self.insert_before_node(self.head ,  _lowerCamelCase   )




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase   ):
       if self.head is None:
             self.set_head(_lowerCamelCase   )
       else:
             self.insert_after_node(self.tail ,  _lowerCamelCase   )




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase   ):
       a						:Dict										=	Node(_lowerCamelCase   )
       if self.head is None:
             self.set_head(_lowerCamelCase   )
       else:
             self.set_tail(_lowerCamelCase   )




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase ,  _lowerCamelCase   ):
       a						:Optional[Any]										=	node
       a						:int										=	node.previous

       if node.get_previous() is None:
             a						:Tuple										=	node_to_insert
       else:
             a						:int										=	node_to_insert

       a						:Tuple										=	node_to_insert




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase ,  _lowerCamelCase   ):
       a						:Dict										=	node
       a						:int										=	node.next

       if node.get_next() is None:
             a						:Tuple										=	node_to_insert
       else:
             a						:List[str]										=	node_to_insert

       a						:Any										=	node_to_insert




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase ,  _lowerCamelCase   ):
       a						:List[str]										=	1
       a						:Dict										=	Node(_lowerCamelCase   )
       a						:List[str]										=	self.head
       while node:
             if current_position == position:
                   self.insert_before_node(_lowerCamelCase ,  _lowerCamelCase   )
                   return
             current_position += 1
             a						:List[str]										=	node.next
       self.insert_after_node(self.tail ,  _lowerCamelCase   )




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase   ):
       a						:Dict										=	self.head
       while node:
             if node.get_data() == item:
                   return node
             a						:Union[str, Any]										=	node.get_next()
       raise Exception('''Node not found'''   )




 def 	SCREAMING_SNAKE_CASE__    (		self ,  _lowerCamelCase   ):
       if (node := self.get_node(_lowerCamelCase   )) is not None:
             if node == self.head:
                   a						:Union[str, Any]										=	self.head.get_next()

             if node == self.tail:
                   a						:Tuple										=	self.tail.get_previous()

             self.remove_node_pointers(_lowerCamelCase   )




 @staticmethod
 def 	SCREAMING_SNAKE_CASE__    (		_lowerCamelCase   ):
       if node.get_next():
             a						:List[str]										=	node.previous

       if node.get_previous():
             a						:Tuple										=	node.next

       a						:List[str]										=	None
       a						:Optional[Any]										=	None




 def 	SCREAMING_SNAKE_CASE__    (		self   ):
       return self.head is None







def     __lowerCamelCase						(			):




      """simple docstring"""







if __name__ == "__main__":
     import doctest

     doctest.testmod()









def     __lowerCamelCase						(			UpperCAmelCase_						:		int						):




      """simple docstring"""





      if not isinstance(UpperCAmelCase_			,  UpperCAmelCase_						):
            raise TypeError('''Input value must be an \'int\' type'''						)

      a						:Optional[int]										=	0
      while number:
            position += 1
            number >>= 1

      return position


if __name__ == "__main__":
     import doctest

     doctest.testmod()





