Tkinter from Vis. BASIC

[Terrance N. Phillip]

In VB, an easy way I indicate progress is something like
	do while <some process is not met>
	    lblNotify.foreground = randomcolor
             lblNotify.refresh   <-----------
             <sleep>
          loop

I want to do the same thing in Python/Tkinter:

         # Wait for network to recognize the workstation:
         while os.system("slist") != 0:
             self.notify["fg"] = randcolor()
             # how do I refresh label l3 at this point?
             time.sleep(3)

I've tried self.notify.grid() (I'm using the grid geometry manager 
throughout), but that didn't work, and there is no redraw() or refresh() 
method that I can see.