title: How do I make a class (that already exist) inherit another class?
body: <p>For example class <code>res.partner</code>. I want <code>res.partner</code> to inherit class <code>A</code>. How do I do that?</p>
  
  <p>I don't think this will work:</p>
  
  <pre><code>class custom_res_partner(osv.osv):
  
      _name           = "res.partner"
      _inherit        = "A"
  
  custom_res_partner()
  </code></pre>