You can use openerp client lib (search for it on Github), and try this to start with:

import openerplib
connection = openerplib.get_connection(hostname="localhost", database=dbname, 
                                       login=username, password=pwd)

 sale_model = connection.get_model("sale.order")
 ids = sale_model.search([])
 for id in ids:
     so = sale_model.read(id, ["name"])
     print so