def __msg_callback(self, subject, date):
        if self._date <= date:
            return
        self.set_date(date)
        sys.stdout.write("\r")
        sys.stdout.write(str(self))
        sys.stdout.flush()
dataset/ETHPy150Open manahl/mdf/mdf/lab/progress.py/ProgressBar.__msg_callback/swapped operands of `<=`