def get_rfc3339_time(secs=None):
return time.strftime("<STR_LIT>", time.gmtime(secs))<EOL>
Return <secs> in RFC 3339 date/time format (pass secs=None for current date).

    RFC 3339 is a subset of ISO 8601, used for '{DAV:}creationdate'.
    See http://tools.ietf.org/html/rfc3339