Helper function to return output types, now we need to use a list
instead of a tuple since all the other types
(std::pair,std::vector,std::list,etc) return tuples.
%fragment("t_output_helper","header") %{
t_output_helper(PyObject* target, PyObject* o) {
} else if (target == Py_None) {
if (!PyList_Check(target)) {
PyList_SetItem(target, 0, o2);