Using Doubly Linked List to design linked list in python

00:00 Introduction
00:39 Doubly Linked List
02:15 Add at Index,
03:09 searching from the head to find the predecessor and the successor
05:10 searching from the tail to find the predecessor and the successor
07:09 Insertion process
09:19 Add at Head/Add at Tail
10:37 Delete at Index
12:47 Get