[Solved]What is Object Base?

Archive Python API
1

When overriding bpy.context, it seems that I should overwrite object bases (eg selected_bases) instead of objects (selected_objects).

However, I have no idea what this is.

In the docs(for version < 2.80), it reads that it is

An object instance in a scene

, which sounds like the bpy.types.Object(ID) itself. (And I hardly understand what the props like layers_local_view are)

In the doc of 2.80 (accessed on 1 Nov), it is described as

An object instance in a render layer

,which seems more informative but still makes no sense to me.

2

reading this D2412

3

Found an answer.

The fact that the actual data remains in the Main tree is further visualized in the Scene block. Internally it has a list of Base structs which allows a Scene to link to many Objects without removing them from the list in the Main structure.
(A Base also allows some local properties, such as layer and selection, enabling a single Object to be used by multiple Scenes with such properties different.)

IMG_3736

Document on data structure