Cannot change object layer with python if object is not in active scene #56271

New Issue

Daniel Oakey · 2018-08-08T02:57:10+02:00

Daniel Oakey commented

2018-08-08 02:57:10 +02:00

System Information
Operating system: Arch Linux
Graphics card: GTX 1060

Blender Version
2.79b

Short description of error
Using python, I cannot change an object's visible layers if the object exists in a scene other than the active scene.

Exact steps for others to reproduce the error

Create a new scene and add a cube to layer 1
Try changing the object's layer with python:

    import bpy

    scene = bpy.data.scenes['Scene.001']
    obj = scene.objects['Cube']

    layer = 10
    for i in reversed(range(20)):
        obj.layers[i] = (i == layer)

bug_demo.blend

**System Information** Operating system: Arch Linux Graphics card: GTX 1060 **Blender Version** 2.79b **Short description of error** Using python, I cannot change an object's visible layers if the object exists in a scene other than the active scene. **Exact steps for others to reproduce the error** 1. Create a new scene and add a cube to layer 1 2. Try changing the object's layer with python: ``` import bpy scene = bpy.data.scenes['Scene.001'] obj = scene.objects['Cube'] layer = 10 for i in reversed(range(20)): obj.layers[i] = (i == layer) ``` [bug_demo.blend](https://archive.blender.org/developer/F4152289/bug_demo.blend)

Daniel Oakey commented

2018-08-08 02:57:10 +02:00

Added subscriber: @doakey3

Bastien Montagne commented

2018-08-09 10:53:58 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2018-08-09 10:53:58 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2018-08-09 10:53:58 +02:00

Bastien Montagne self-assigned this 2018-08-09 10:53:58 +02:00

Bastien Montagne commented

2018-08-09 10:53:58 +02:00

We do not handle user support on this tracker, only bug reports. User forums like blenderartists.org or blender.stackexchange.com should be used for that matter.

No bug here, you can only use objects to change their layers in current active scene.

To do that in another scene, you have to use the object bases (which are sort of 'hooks' for objects into every given scene):

import bpy

scene = bpy.data.scenes['Scene.001']
base = scene.object_bases['Cube']

layer = 10
for i in reversed(range(20)):

base.layers[i] = (i == layer)

We do not handle user support on this tracker, only bug reports. User forums like [blenderartists.org](http:*blenderartists.org/) or [blender.stackexchange.com](http:*blender.stackexchange.com/) should be used for that matter. No bug here, you can only use objects to change their layers in current active scene. To do that in another scene, you have to use the object bases (which are sort of 'hooks' for objects into every given scene): ```lang=python import bpy scene = bpy.data.scenes['Scene.001'] base = scene.object_bases['Cube'] layer = 10 for i in reversed(range(20)): ``` base.layers[i] = (i == layer) ```

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Cannot change object layer with python if object is not in active scene #56271