def days_str(self, today=None): return utils.days_as_str(self.delta_days(today))
def days_str(self): delta_days = -1 * (utils.today() - self.scheduled).days if self.status == 'attended' and self.arrived is not None: delta_days = (utils.today() - self.arrived).days return utils.days_as_str(delta_days)
def days_str(self,today=None): return utils.days_as_str(self.delta_days(today))