title: `inspect.trace()` vs `traceback`
body: <p>I am confused about the difference between two objects:</p>
  
  <ul>
  <li>the list of frames returned by <code>inspect.trace()</code> while an exception is being handled</li>
  <li>the traceback returned by <code>sys.exc_info()[2]</code> (or passed in the call to <code>sys.excepthook</code>)</li>
  </ul>
  
  <p>Do the two objects contain the same information, just organized into a different data structure? If not, what one has that the other doesn't?</p>