title: Make Tkinter widget take focus
body: <p>I have a script that uses Tkinter to pop up a window with a message. How do I make sure it takes focus so the user doesn't miss it and explicitly has to dismiss the window. the code is :</p>
  
  <pre><code>root = Tk()
  to_read = "Stuff" 
  w = Label(root, text=to_read)
  w.pack()
  root.mainloop()
  </code></pre>