Tkinter 简单回调

from Tkinter import *class App:  frame = None  def __init__(self,master):      frame = Frame(master)      frame.pack()      self.button = Button(frame,text="Quit", fg="red", command = frame.quit)      self.button.pack(side=LEFT)      self.hi_there = Button(frame,text="Hello",command = self.say_hi)      self.hi_there.pack(side=LEFT)  def say_hi(self):      print "hi there, everyone!"root = Tk()app = App(root)root.mainloop()