The **kwargs can do this just well. Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <20170712075528.22770-2-famz@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Fam Zheng <famz@redhat.com>