python tkinter messagebox

from tkinter import messagebox

messagebox.showinfo('Title', 'Information')

import tkinter as tk
from tkinter import messagebox as mb

def answer():
    mb.showerror("Answer", "Sorry, no answer available")

def callback():
    if mb.askyesno('Verify', 'Really quit?'):
        mb.showwarning('Yes', 'Not yet implemented')
    else:
        mb.showinfo('No', 'Quit has been cancelled')

tk.Button(text='Quit', command=callback).pack(fill=tk.X)
tk.Button(text='Answer', command=answer).pack(fill=tk.X)
tk.mainloop()

import tkinter
from tkinter import messagebox
# hide main window
root = tkinter.Tk()
# message box display
messagebox.showerror("Error", "Error message")
messagebox.showwarning("Warning","Warning message")
messagebox.showinfo("Information","Informative message")

import Tkinter
import tkMessageBox

top = Tkinter.Tk()
def hello():
   tkMessageBox.showinfo("Say Hello", "Hello World")

B1 = Tkinter.Button(top, text = "Say Hello", command = hello)
B1.pack()

top.mainloop()

from tkinter import *
from tkinter import messagebox

def listMessageBox(arr):
  window=Tk()
  listbox=Listbox(window)
  listbox.pack(fill=BOTH, expand=1) #adds listbox to window
  [listbox.insert(END, row) for row in arr] #one line for loop
  window.mainloop()
  
arr=['a','b','c','1','2','3']

listMessageBox(arr)