text: class Node:
    ''''
   my counstructur __init__
    '''
    def __init__(self, value):
      self.value = value
      self.next = None
  
    def add(self, data):
      return Node(self.value + data.value)
  
  
  
  
  class LinkedList():
  
    '''
   creat the list 
    '''
    def __init__(self):
      self.head = None
  
    def insert(self, value):
      node = Node(value)
    
      if self.head:
        node.next = self.head
  
      self.head = node
      
   
    '''
   append method 
    '''
    def append(self,value):
      new_node=Node(value)
  
      if self.head == None:
        self.head = new_node
      else:
        current=self.head
        while current.next:
          current=current.next
        current.next=new_node
  
  
  
  