#!/usr/bin/env python3

# -*- coding=utf-8 -*-

from tkinter import *

import tkinter.messagebox as messagebox

class Application(Frame):

def __init__(self, master=None):

Frame.__init__(self, master)

self.pack()

self.createWidgets()

def createWidgets(self):

self.nameInput = Entry(self)

self.nameInput.pack()

self.alertButton = Button(self, text='Hello', command=self.hello)

self.alertButton.pack()

def hello(self):

name = self.nameInput.get() or 'world'

messagebox.showinfo('Message', 'Hello, %s' % name)

app = Application()

# 设置窗口标题:

app.master.title('Hello World')

# 主消息循环:

app.mainloop()