title: How do I close a tkinter window?
body: <p>How do I end a Tkinter program? Let's say I have this code:</p>
  
  <pre><code>from Tkinter import *
  
  def quit():
      # code to exit
  
  root = Tk()
  Button(root, text="Quit", command=quit).pack()
  root.mainloop()
  </code></pre>
  
  <p>How should I define the <code>quit</code> function to exit my application?</p>