code: def classical(self, **kwargs):
          
          classical_mode = list(def_classical.keys())
          if not kwargs:
              self.classical_dict = all_classical.copy()
              return
          if "all" in kwargs:
              if kwargs["all"]:
                  self.classical_dict = all_classical.copy()
              else:
                  self.classical_dict = no_classical.copy()
  
          for k, v in list(kwargs.items()):
              if k in classical_mode:
                  self.classical_dict[k] = v
              else:
                  raise UnknownClassicalModeError
docs: turn classical mode on and off for various categories
  
          turn on all classical modes:
          classical()
          classical(all=True)
  
          turn on or off specific claassical modes:
          e.g.
          classical(herd=True)
          classical(names=False)
  
          By default all classical modes are off except names.
  
          unknown value in args or key in kwargs rasies
          exception: UnknownClasicalModeError