title: Python : terminology 'class' VS 'type'
body: <p>Just a simple question : when should I use the term 'class', and when should I use the term 'type' in Python ?</p>
  
  <ul>
  <li>is 'class' only for user-defined types, and 'type' for built-in types ?</li>
  <li>or now that <a href="http://www.python.org/download/releases/2.2/descrintro/" rel="noreferrer">everything is a type</a> ... should I use always 'type' even for user-defined classes ?</li>
  <li>... ?</li>
  </ul>