code: def punsubscribe(self, *args):
          
          if args:
              args = list_or_args(args[0], args[1:])
              patterns = self._normalize_keys(dict.fromkeys(args))
          else:
              patterns = self.patterns
          self.pending_unsubscribe_patterns.update(patterns)
          return self.execute_command('PUNSUBSCRIBE', *args)
docs: Unsubscribe from the supplied patterns. If empty, unsubscribe from
          all patterns.