title: Copy from clipboard using Python and Tkinter
body: <p>I'm trying to take a string from the Windows clipboard and paste it into a listbox in a Tkinter GUI. It works great until trying to copy a image.</p>
  
  <pre><code>clipboardData = root.selection_get(selection="CLIPBOARD")
  listbox.insert(0, clipboardData)
  </code></pre>
  
  <p>I have tried to use Tkinter, pyperclip and clipboard. How can I avoid non-text content?</p>