title: tkinter did not import successfully. Please check your setup
body: <p>Been trying for days to figure out why this won't work. I've tried this on 3 different freshly new Linux Mint distros and I get this error every time.</p>
  <p>I'm trying to complete step 1 for the GUI tutorial on rasperry pi's website. <a href="https://www.raspberrypi.org/learning/getting-started-with-guis/" rel="nofollow noreferrer">https://www.raspberrypi.org/learning/getting-started-with-guis/</a></p>
  <p>I've simply done the following:</p>
  <ol>
  <li>Verified Python3 is installed and up to date</li>
  <li>Installed guizero</li>
  </ol>
  <blockquote>
  <p>from guizero import App</p>
  <p>app = App(title=&quot;Hello world&quot;)</p>
  <p>app.display()</p>
  </blockquote>
  <p>The error message follows attempting to run this file. (Title is complete error message)</p>
  <p><strong>Edit:</strong></p>
  <p>Yes, I am using Python 3. I verified Python 3 is installed and run the script using Python 3. I installed guizero via pip3.</p>