code: def _iter_info(self, niter, level=logging.INFO):
          
          max_mis = self.iter_mis[niter - 1]
          msg = ' Iter {:<d}.  max mismatch = {:8.7f}'.format(niter, max_mis)
          logger.info(msg)
docs: Log iteration number and mismatch
  
          Parameters
          ----------
          level
              logging level
          Returns
          -------
          None