How do I end a Python Tkinter program?

Question

How do I end a Python Tkinter program? Let's say I have this code:

from Tkinter import *

def quit():
    ???

root = Tk()
Button(root, text="Quit", command=quit).pack()
root.mainloop()

How should I define the quit() routine?

Answer 1

def quit()
    global root
    root.quit()

or

def quit()
    global root
    root.destroy()

Answer 2

The usual method to exit a Python program:

sys.exit()

(to which you can also pass an exit status) or

raise SystemExit

will work fine in a Tkinter program.

Answer 3

import Tkinter as tk

def quit(root): root.destroy()

root = tk.Tk() tk.Button(root, text="Quit", command=lambda root=root:quit(root)).pack() root.mainloop()