code: def _get_field_values(item, fldnames, rpt_fmt=None, itemid2name=None):
          
          if hasattr(item, "_fldsdefprt"): # Is a GOEnrichmentRecord
              return item.get_field_values(fldnames, rpt_fmt, itemid2name)
          if hasattr(item, "_fields"): # Is a namedtuple
              return [getattr(item, f) for f in fldnames]
docs: Return fieldnames and values of either a namedtuple or GOEnrichmentRecord.