图形界面
![](https://images2015.cnblogs.com/blog/382256/201602/382256-20160222155021729-672561607.png)
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()