def _pretty_frame_relation(frel):
 outstr = u'<{0.type.superFrameName}={0.superFrameName} -- {0.type.name} -> {0.type.subFrameName}={0.subFrameName}>'.format(frel)
 return outstr

def _pretty_frame_relation ( frel ) : outstr = u'<{0.type.superFrameName}={0.superFrameName} -- {0.type.name} -> {0.type.subFrameName}={0.subFrameName}>' . format ( frel ) return outstr
helper function for pretty-printing a frame relation .