update time stamp format

    def write_stamp(self):

        if self.stamps is not None and self.stamps != "":

            with open(self.l1_file(self.stamps), "a+") as f:

                f.write(f"{time.Time.now().isot.replace('.', ',')}+0800\n")

                f.write(f"{time.Time.now().isot}+08:00\n")

    @staticmethod

    def now():