def __neg__(self):
        """get SeqTranslator for the opposite strand """
        try:
            return self._reverse
        except __HOLE__:
            self._reverse = self.__class__(self.db, self.id,
                                           reversePath=self)
            return self._reverse
dataset/ETHPy150Open cjlee112/pygr/pygr/translationDB.py/SeqTranslator.__neg__