title: Unloading a module in Python 3.x (not the same as re-loading)
body: <p>It's clear to me that there was no clean solution in Python 2 to unload a module, and this was a known bug, that was set to be corrected. </p>
  
  <p>The posts:</p>
  
  <p><a href="https://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module/487718">How do I unload (reload) a Python module?</a>
  <a href="https://stackoverflow.com/questions/8781257/remove-an-imported-python-module">Remove an imported python module</a></p>
  
  <p>of the year 2009 and 2010 confirm this lack of support for unloading a module.</p>
  
  <p>I wonder if this was solved in Python 3.x. When I do, <code>import os</code>, <code>del os</code>, <code>dir()</code>, the <code>os</code> module is not there (at least not visible, usable). Is it gone?</p>