Python图形界面Tk

最近在学习Python，在使用Tkinter做图形界面时遇到了几个小问题，网上查了一下，在Python2.x导入的是Tkinter，Python3则是tkinter。而且导入的simpledialog和message也不一样。具体是这样的:Python2.x

 from Tkinter import *
 import tkSimpleDialog as dl
 import tkMessageBox as mb

Python3

 from tkinter import *
 import tkinter.simpledialog as dl
 import tkinter.messagebox as mb

一个猜数字的小游戏

 #Python 2.7
 from Tkinter import *
 import tkSimpleDialog as dl
 import tkMessageBox as mb
 root=Tk()
 w=Label(root,text='Guess Number Game')
 w.pack()
 mb.showinfo('Welcome','Welcome to Guess Number Game')
 number=66
 while True:
     guess=dl.askinteger('Number','what\'s your guess?')
     if guess==number:
         output='Bingo!you guessed it right,but you do not win any prizes!'
         mb.showinfo('hahah',output)
         break
     elif guess>number:
         output='No,the number is a lower than that'
         mb.showinfo('hahah',output)
     else:
         output='No,the number is a higher than that'
         mb.showinfo('hahah',output)
 print 'Done'