def PCO_protocol_dispatcher(s):
 proto_num = ((ord(s[0]) * 256) + ord(s[1]))
 cls = PCO_PROTOCOL_CLASSES.get(proto_num, Raw)
 return cls(s)

def PCO_protocol_dispatcher ( s ) : proto_num = ( ( ord ( s [ 0 ] ) * 256 ) + ord ( s [ 1 ] ) ) cls = PCO_PROTOCOL_CLASSES . get ( proto_num , Raw ) return cls ( s )
choose the correct pco element .