code: def display_config(self):
          
  
          if self.opt['Verbose']:
              hdrtxt = type(self).hdrtxt()
              # Call utility function to construct status display formatting
              self.hdrstr, self.fmtstr, self.nsep = common.solve_status_str(
                  hdrtxt, fwdth0=type(self).fwiter, fprec=type(self).fpothr)
          else:
              self.hdrstr, self.fmtstr, self.nsep = '', '', 0
docs: Set up status display if option selected. NB: this method
          assumes that the first entry is the iteration count and the
          last is the rho value.