JFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3RbrJFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3Rbr# Display hello, world in a button; clicking it quits the program import sys from Tkinter import * def main(): root = Tk() button = Button(root) button['text'] = 'Hello, world' button['command'] = quit_callback # See below button.pack() root.mainloop() def quit_callback(): sys.exit(0) main()