Queue using Linked list

This program is about Queue using Linked list. This program contains functions
1.Insert
2.Delete
3.Display

Source code:

class Node:
    def __init__(self,data):
        self.data=data
        self.next=None
class Queuell:
    def __init__(self):
        self.rear=None
        self.front=None
    def insert(self):
        data=int(input("enter data"))
        newnode=Node(data)
        if self.front == None:
            self.front=newnode
            self.rear=newnode
        else:
            self.rear.next=newnode
            self.rear=newnode
        print("element inserted")
    def delete(self):
        if self.front == None:
            print("empty")
        else:
            temp=self.front
            print("element deleted is %d" %(temp.data))
            self.front=self.front.next
            del temp

    def display(self):
        if self.front==None:
            print("empty")
        else:
            temp=self.front
            print("elements in Queue")
            while temp!=None:
                print("%d" %(temp.data))
                temp=temp.next
def menu():
    print("1.insert\n2.delete\n3.display\n4.quit")
def stop():
    print("you are about to terminate the program")
    exit(0)     
s=Queuell()
def default():
    print("check your input")
menu()
while True:
    menu= {
    1: s.insert,
    2: s.delete,
    3: s.display,
    4: stop}
    option = int(input("Please enter your choice"))

    menu.get(option,default)()

Output:

Python 3.4.0 (v3.4.0:04f714765c13, Mar 16 2014, 19:24:06) [MSC v.1600 32 bit (Intel)] on win32

Type "copyright", "credits" or "license()" for more information.

>>> ================================ RESTART ================================

>>> 

1.insert

2.delete

3.display

4.quit

Please enter your choice1

enter data1

element inserted

Please enter your choice1

enter data2

element inserted

Please enter your choice1

enter data3

element inserted

Please enter your choice3

elements in Queue

1

2

3

Please enter your choice2

element deleted is 1

Please enter your choice3

elements in Queue

2

3

Please enter your choice2

element deleted is 2

Please enter your choice3

elements in Queue

3

Please enter your choice2

element deleted is 3

Please enter your choice3

empty

Please enter your choice4
Now my new Blog on Fundamentals of Python can be found at https://fundamentalsofpython.blogspot.com/2020/02/list-manipulations.html