diff options
Diffstat (limited to 'py')
| -rw-r--r-- | py/objtype.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/py/objtype.c b/py/objtype.c index cb0fb267c..a539fcab2 100644 --- a/py/objtype.c +++ b/py/objtype.c @@ -588,16 +588,13 @@ STATIC void mp_obj_instance_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *des #if MICROPY_CPYTHON_COMPAT if (attr == MP_QSTR___dict__) { // Create a new dict with a copy of the instance's map items. - // This creates, unlike CPython, a 'read-only' __dict__: modifying - // it will not result in modifications to the actual instance members. - mp_map_t *map = &self->members; - mp_obj_t attr_dict = mp_obj_new_dict(map->used); - for (size_t i = 0; i < map->alloc; ++i) { - if (mp_map_slot_is_filled(map, i)) { - mp_obj_dict_store(attr_dict, map->table[i].key, map->table[i].value); - } - } - dest[0] = attr_dict; + // This creates, unlike CPython, a read-only __dict__ that can't be modified. + mp_obj_dict_t dict; + dict.base.type = &mp_type_dict; + dict.map = self->members; + dest[0] = mp_obj_dict_copy(MP_OBJ_FROM_PTR(&dict)); + mp_obj_dict_t *dest_dict = MP_OBJ_TO_PTR(dest[0]); + dest_dict->map.is_fixed = 1; return; } #endif |