Data Structures, Algorithms, Data Engineering, Data Science, Doubly Linked List.
current.next if current.next: current.next.prev = current.prev if current == self.head: self.head = current.next if current == self.tail: self.tail = current.prev Execution: dllist.delete(index=2) dllist.display() # Output: 1 -> 2 -> 3 -> 4 -> None 5. Update: def update(self, index, new_data):