title: Python turtle module causes OS X to crash
body: <p>I'm working through <a href="http://greenteapress.com/thinkpython2/thinkpython2.pdf" rel="noreferrer">Think Python</a> chapter 4, where they tell you to type the following to see if you have the turtle module:</p>
  
  <pre><code>import turtle
  bob = turtle.Turtle()
  </code></pre>
  
  <p>This is supposed to open a new window, but instead, it crashes my computer. I've seen it freeze my computer where I can't move the cursor or change windows, and I have to restart it. And I've also seen it close all my programs and re-open them.</p>
  
  <p>I'm running Python 3.7 downloaded from Anaconda on a Macbook Air with Mojave version 10.14.6. </p>
  
  <p>EDIT: When I run BenajahTX's suggestion below, I get this error message printed 16 times:
  <code>CGSTrackingRegionSetIsEnabled returned CG error 268435459</code></p>
  
  <p>Any clue what is causing this or how to fix it?</p>