def _strify(s):
    """If s is a unicode string, encode it to UTF-8 and return the results,
    otherwise return str(s), or None if s is None"""
    if s is None:
        return None
    if isinstance(s, unicode):
        return s.encode("utf-8")
    return str(s)
def _strify ( s ) : if s is None : return None if isinstance ( s , unicode ) : return s . encode ( "utf-8" ) return str ( s )
If s is a unicode string, encode it to UTF-8 and return the results,
    otherwise return str(s), or None if s is None