code: def get_nts_strpval(self, fmt="{:8.2e}"):
          
          objntmgr = MgrNts(self.goea_results)
          dcts = objntmgr.init_dicts()
          # pylint: disable=line-too-long
          pval_flds = set(k for k in self._get_fieldnames(next(iter(self.goea_results))) if k[:2] == 'p_')
          for fld_float in pval_flds:
              fld_str = "s_" + fld_float[2:]
              objntmgr.add_f2str(dcts, fld_float, fld_str, fmt)
          return objntmgr.mknts(dcts)
docs: Given GOEA namedtuples, return nts w/P-value in string format.