title: Extract values from Django <QuerySet> in Python 3
body: <p>I have some python code:</p>
  
  <pre><code>UnitTestCollection.objects.filter(unit__type=unit_type)
  </code></pre>
  
  <p>which outputs data in format:</p>
  
  <pre><code>&lt;QuerySet [&lt;UnitTestCollection: VALUE1&gt;, &lt;UnitTestCollection: VALUE2&gt;...
  </code></pre>
  
  <p>How can I extract a list of the values only i.e. </p>
  
  <pre><code>[VALUE1, VALUE2....]
  </code></pre>