How do you refresh a window in Tkinter
<p>If I created Tkinter window with some text that filled the whole window and now wanted to replace the window with a new text, is there a way to refresh the window? </p>

<p>For Example:</p>

<pre><code>    a= 100
    win= Tk() 
    win.geometry("500x300")
    while a &gt; 0:
       if a%2 == 0:
           lbl = Label (win, bg = "purple")
           lbl.pack()
       else:
           lbl = Label (win, bg = "blue")
           lbl.pack()
       a= x-1
</code></pre>

<p>The problem with this code is that the Tkinter window does not refresh and just provides the end result instead of showing the windows changing colors.
Thanks for the help! </p>
