C++ iterator to Python tuple

tuple.cpp

// from the Blender Freestyle code

static PyObject *Stroke_viewedges_begin(BPy_Stroke *self)
{
    PyObject *output = PyTuple_New(self->s->viewedges_size());
    std::vector<ViewEdge*>::iterator ve_it = self->s->viewedges_begin(), ve_end = self->s->viewedges_end();

    for (unsigned int i = 0; ve_it != ve_end; ++ve_it, ++i) {
        PyTuple_SET_ITEM(output, i, BPy_ViewEdge_from_ViewEdge(*(*ve_it)));
    }
    return output;
}