Создайте приложение «бегущая строка»

import tkinter as tk
from tkinter import simpledialog
 
def shift():
    prev = entry.get()
    temp = prev[0]
    entry.delete(0)
    entry.insert(tk.END, temp)
 
def inputData():
    answer = simpledialog.askstring("Ввод", "Введите строку")
    if answer is not None:
        entry.delete(0, tk.END)
        entry.insert(0, answer)
 
window = tk.Tk()
window.title("Бегущая строка")
 
frm_form = tk.Frame(relief = tk.SUNKEN, borderwidth = 3)
frm_form.pack()
 
 
label = tk.Label(master = frm_form, text = "Бегущая строка")
entry = tk.Entry(master = frm_form, width = 50)
label.grid(row = 0, column = 0, sticky = "e")
entry.grid(row = 0, column = 1)
 
frm_buttons = tk.Frame()
frm_buttons.pack(fill = tk.X, ipadx = 5, ipady = 5)
 
btn_input = tk.Button(master = frm_buttons, text = "Ввести", command = inputData)
btn_input.pack(side = tk.RIGHT, padx = 10, ipadx = 10)
 
btn_shift = tk.Button(master = frm_buttons, text = "Сдвинуть", command = shift)
btn_shift.pack(side = tk.RIGHT, ipadx = 10)
 
 
window.mainloop()