Create and Display in Linked List in DSA Python

Program 1

# Impelmentation of Single Linked List

# class for size of Node
class Node:
    def __init__(self):
        self.data=None
        self.add=None


class LinkedList:
    def __init__(self):
          self.start=None
          self.count=0

 #method for create list
    def createList(self):
       n=int(input("Enter an element"))
       self.start=Node()
       self.start.data=n
       self.start.add=None
       temp=self.start
       self.count=self.count+1
       ch=input("Want to continue(Y/N)")
       while(ch=="Y"):
           n=int(input("Enter an element"))
           newnode=Node()
           newnode.data=n
           newnode.add=None
           temp.add=newnode
           temp=newnode
           self.count=self.count+1
           ch=input("Want to continue(Y/N)")

#method for display list
    def displayList(self):
           if(self.start==None):
                print("List is empty")
           else:
                print("Elements of List: ")    
                temp=self.start
                while(temp!=None):
                     print(temp.data,end=" ")
                     temp=temp.add
                print("\nTotal Node is: ",self.count)

# Main Menu

mylist=LinkedList()
while(1):
    print("\n--------------------------Linked List Menu-------------------------\n")
    print("1.Create")
    print("2.Display")
    print("3.Insert First")
    print("4.Insert Middle")
    print("5.Insert Last")
    print("6.Delete First")
    print("7.Delete Middle")
    print("8.Delete Last")
    print("9.Exit")
    print("\n---------------------------------------------------------------------\n")
    choice=int(input("Enter your choice"))
    if(choice==1):
          mylist.createList()
    elif(choice==2):
          mylist.displayList()                    
    else:
         break