linked-list.py

# A simple Python program for traversal of a linked list 
  
# Node class 
class Node: 
  
    # Function to initialise the node object 
    def __init__(self, data): 
        self.data = data  # Assign data 
        self.next = None  # Initialize next as null 
  
  
# Linked List class contains a Node object 
class LinkedList: 
  
    # Function to initialize head 
    def __init__(self): 
        self.head = None
  
    # This function prints contents of linked list 
    # starting from head 
    def printList(self): 
        temp = self.head 
        while (temp): 
            print(temp.data) 
            temp = temp.next
  
  
# Code execution starts here 
if __name__=='__main__': 
  
    # Start with the empty list 
    llist = LinkedList() 
  
    llist.head = Node(1) 
    second = Node(2) 
    third = Node(3) 
  
    llist.head.next = second; # Link first node with second 
    second.next = third; # Link second node with the third node 
  
    llist.printList()