How to use the ubermagtable.Table function in ubermagtable

else:
                        runner = oc.oommf.get_oommf_runner()

            runner.call(argstr=miffilename)

            # Update system's m and datatable attributes if the derivation of
            # E, Heff, or energy density was not asked.
            if compute is None:
                # Update system's magnetisation. An example .omf filename:
                # test_sample-Oxs_TimeDriver-Magnetization-01-0000008.omf
                omffiles = glob.iglob(f'{system.name}*.omf')
                lastomffile = sorted(omffiles)[-1]
                system.m.value = df.Field.fromfile(lastomffile)

                # Update system's datatable.
                system.table = ut.Table.fromfile(f'{system.name}.odt')

        if compute is None:
            system.drive_number += 1
        else:
            system.compute_number += 1

td.drive(system, t=1e-25, n=1, append=True,
             compute=schedule_script(func, system))

    if func.__name__ == 'energy':
        extension = '*.odt'
    elif func.__name__ == 'effective_field':
        extension = '*.ohf'
    elif func.__name__ == 'density':
        extension = '*.oef'

    dirname = os.path.join(system.name, f'compute-{system.compute_number-1}')
    output_file = max(glob.iglob(os.path.join(dirname, extension)),
                      key=os.path.getctime)

    if func.__name__ == 'energy':
        table = ut.Table.fromfile(output_file, rename=False)
        if isinstance(func.__self__, mm.Energy):
            output = table.data['RungeKuttaEvolve:evolver:Total energy'][0]
        else:
            output = table.data[(f'{oxs_class(func.__self__, system)}:'
                                 f'{func.__self__.name}:Energy')][0]
    else:
        output = df.Field.fromfile(output_file)

    return output