[mod_python] req.form

Hi,
I use req.form variable (it's an instance of util.FieldStorage):
-------------------
content = req.form
lista = content.list
return lista
...

  [Field('Coste', '12'), Field('Coste', '10'), Field('Envios', '1'), 
Field('Return', '/mailing/gen_mail.py/handler')]
-------------------
and my question is, wath is the best way to get values from this list?

Thanks.