code: def exclude(*what):
      
      cls, attrs = _split_what(what)
  
      def exclude_(attribute, value):
          return value.__class__ not in cls and attribute not in attrs
  
      return exclude_
docs: Blacklist *what*.
  
      :param what: What to blacklist.
      :type what: :class:`list` of classes or :class:`attr.Attribute`\\ s.
  
      :rtype: :class:`callable`