1 # Display hello, world in a button; clicking it quits the program 2 3 import sys 4 from Tkinter import * 5 6 def main(): 7 root = Tk() 8 button = Button(root) 9 button['text'] = 'Hello, world' 10 button['command'] = quit_callback # See below 11 button.pack() 12 root.mainloop() 13 14 def quit_callback(): 15 sys.exit(0) 16 17 main() 18
