title: How do I delete a label off of the screen in a python Tk GUI
body: <pre><code>#here is the example code:
  label1 = Label(app, text="This is a Label!")
  label1.pack()
  #But when i do:
  label1.pack_forget()
  #I get this error:
  #AttributeError: 'NoneType' object has no attribute 'pack_forget'
  #I also try:
  label1.destroy()
  </code></pre>
  
  <p>I get the same error.
  I want to be able to take the label off of the screen so i can
  put an updated label on the screen.</p>