def default_billship_handler(request, order_form):
 if (not request.session.get(u'free_shipping')):
  settings.clear_cache()
  set_shipping(request, _(u'Flat rate shipping'), settings.SHOP_DEFAULT_SHIPPING_VALUE)

def default_billship_handler ( request , order_form ) : if ( not request . session . get ( u'free_shipping' ) ) : settings . clear_cache ( ) set_shipping ( request , _ ( u'Flat rate shipping' ) , settings . SHOP_DEFAULT_SHIPPING_VALUE )
default billing/shipping handler - called when the first step in the checkout process with billing/shipping address fields is submitted .