[C++-sig] __getitem__ and __setitem__ for a Matrix class

[sashan]

Hi

I want to expose a matrix class's operator[]. To expose it as an rvalue 
I did the following

boost::python::list GetList(Matrix3& self, int i)
{
    if (!(i < 3 && i > -1))
    {
        PyErr_SetObject(PyExc_IndexError, PyInt_FromLong(i));
        boost::python::throw_error_already_set();
    }
    boost::python::list list;
    list.append(self[i][0]);
    list.append(self[i][1]);
    list.append(self[i][2]);
    return list;
}
.
.
.
classMatrix3.def("__getitem__", &GetList);

However I don't know/can't figure out how to expose it as an lvalue?

Thanks

-- 
sashan
-------------------------------
P: Egad! You astound me, Brain!
B: That's a simple task, Pinky.