docs: def pack_command(self, *args):
          "Pack a series of arguments into a value Redis command"
          args_output = SYM_EMPTY.join([
              SYM_EMPTY.join(
                  (SYM_DOLLAR, str(len(k)).encode(), SYM_CRLF, k, SYM_CRLF))
              for k in imap(self.encoder.encode, args)])
          output = SYM_EMPTY.join(
              (SYM_STAR, str(len(args)).encode(), SYM_CRLF, args_output))
          return output