title: Python Tkinter clearing a frame
body: <p>I am trying to clear out a frame in the tkinter so that the new contents can be written (refresh information) but i could not manage to do it. I am aware of these </p>
  
  <pre><code>frame.destroy()
  frame.pack_forget()
  frame.grid_forget()
  </code></pre>
  
  <p>but frame.destroy() will totally remove the frame. And the other two also could not give me the result i want.What i need is just to <strong>clear up every items in the frame but the frame itself will stay</strong>. Is there anyway to do it?</p>