def METHOD_NAME():
    p = datasets.PyCMDS.wm_w2_w1_001
    data = wt.data.from_PyCMDS(p)
    data.convert("eV")
    p = os.path.join(here, "units")
    p = data.save(p)
    new = wt.open(p)
    assert new.units == ("eV", "eV", "eV")
    data.close()
    new.close()
    os.remove(p)