from Node import *
  
class ContactsLL:

  # singly linked list of contacts with header node

  def __init__(self):
    self._head = Node("","","",None)
    self._size = 0

  def find(self,name):

  def insert(self,contact):

  def delete(self,name):

  def update(self,contact):

  def size(self):
    return self._size

  def __str__(self):
    p = self._head
    result = "\n"
    while p._next != None:
      result = result + str(p._next)+"\n"
      p = p._next
    return result+"\n"