How to use the timezonefinder.global_settings.NR_BYTES_H function in timezonefinder

def _holes_of_line(self, line=0):
        try:
            amount_of_holes, hole_id = self.hole_registry[line]

            for i in range(amount_of_holes):
                self.hole_coord_amount.seek(NR_BYTES_H * hole_id)
                nr_of_values = unpack(DTYPE_FORMAT_H, self.hole_coord_amount.read(NR_BYTES_H))[0]

                self.hole_adr2data.seek(NR_BYTES_I * hole_id)
                self.hole_data.seek(unpack(DTYPE_FORMAT_I, self.hole_adr2data.read(NR_BYTES_I))[0])

                yield array([self.fromfile(self.hole_data, dtype=DTYPE_FORMAT_SIGNED_I_NUMPY, count=nr_of_values),
                             self.fromfile(self.hole_data, dtype=DTYPE_FORMAT_SIGNED_I_NUMPY, count=nr_of_values)])
                hole_id += 1

        except KeyError:
            return

# print((x,y,this_lines_shortcuts))
            except KeyError:
                nr_of_entries_in_shortcut.append(0)

    amount_of_shortcuts = len(nr_of_entries_in_shortcut)
    print_shortcut_statistics()

    if amount_of_shortcuts != 360 * 180 * NR_SHORTCUTS_PER_LNG * NR_SHORTCUTS_PER_LAT:
        print(amount_of_shortcuts)
        raise ValueError('this number of shortcut zones is wrong')

    print('The number of filled shortcut zones are:', amount_filled_shortcuts, '(=',
          round((amount_filled_shortcuts / amount_of_shortcuts) * 100, 2), '% of all shortcuts)')

    # for every shortcut 

def id_of(self, line=0):
        self.poly_zone_ids.seek(NR_BYTES_H * line)
        return unpack(DTYPE_FORMAT_H, self.poly_zone_ids.read(NR_BYTES_H))[0]