def __getattr__(self, attr):
        try:
            return TupleO.__getattr__(self, attr)
        except AttributeError:
            return SeqPath.__getattr__(self, attr)
both parent classes have getattr, so have to call them both...
dataset/ETHPy150Open cjlee112/pygr/pygr/apps/splicegraph.py/ExonForm.__getattr__