revert partial utils.py trashed in previous merge
revert partial utils.py trashed in previous merge

quarkslab/irma,hirokihamasaki/irma,hirokihamasaki/irma,hirokihamasaki/irma,hirokihamasaki/irma,quarkslab/irma,quarkslab/irma,hirokihamasaki/irma,quarkslab/irma