def iter_frames(self):
        'iterate over the 6 possible frames, yielding TranslationAnnot'
        for frame in ('0', '1', '2', '-0', '-1', '-2'):
            yield self.db.annodb[(self.id, frame) % '%s:%s']
dataset/ETHPy150Open cjlee112/pygr/pygr/translationDB.py/SeqTranslator.iter_frames/swapped operands of `%`