title: python C api: how to use the "list(…)" operator
body: <p>I have defined a python-type using <code>PyTypeObject</code> etc… and I have defined a <code>.tp_str</code> to support the <code>str(myObj)</code> feature… because my type has also a <strong>[list]</strong> like behavior… I would like to support the <code>list(myObj)</code> feature too. my problem is that I miss a <code>.tp_list</code> entry to support this.</p>
  
  <p>my question… how can I do this?</p>
  
  <p>thanks</p>