code: def write_logevidence(self, lnz, dlnz):
          
          self.attrs['log_evidence'] = lnz
          self.attrs['dlog_evidence'] = dlnz
docs: Writes the given log evidence and its error.
  
          Results are saved to file's 'log_evidence' and 'dlog_evidence'
          attributes.
  
          Parameters
          ----------
          lnz : float
              The log of the evidence.
          dlnz : float
              The error in the estimate of the log evidence.