title: How to fade in/out on a Tkinter Frame
body: <p>How can you fade in and/or out on a Tkinter.Frame or any other widget for that matter. All of the examples that I have seen have been for either root (Tkinter.Tk) or Toplevel setting the alpha e.g.</p>
  
  <p><a href="https://stackoverflow.com/a/22491808/1552953">https://stackoverflow.com/a/22491808/1552953</a></p>
  
  <p>Is it possible to apply this to an individual widget?</p>