PyObject* o1 = PySequence_GetItem(ro, 0);
PyObject* o2 = PySequence_GetItem(ro, 1);
if (PyNumber_Check(o1) && PyNumber_Check(o2))
PyObject* o1 = PySequence_GetItem(ro, 0);
PyObject* o2 = PySequence_GetItem(ro, 1);
if (PyNumber_Check(o1) && PyNumber_Check(o2))