mp_obj_get_array: Work with namedtuple, attrtuple.

Signed-off-by: Jeff Epler <[email protected]>

Author: jepler

py/obj.c

@@ -444,7 +444,7 @@ void mp_obj_get_complex(mp_obj_t arg, mp_float_t *real, mp_float_t *imag) {
 
 // note: returned value in *items may point to the interior of a GC block
 void mp_obj_get_array(mp_obj_t o, size_t *len, mp_obj_t **items) {
-    if (mp_obj_is_type(o, &mp_type_tuple)) {
+    if (mp_obj_is_tuple_compatible(o)) {
         mp_obj_tuple_get(o, len, items);
     } else if (mp_obj_is_type(o, &mp_type_list)) {
         mp_obj_list_get(o, len, items);