I am the developer of Gyes ( random material and texture generator). The reason
why Gyes
use bpy.context.scene is to store a property that store presets of randomised
materials / textures.
I wanted the data to be stored/saved with the blend file and be associated with
the scene curently loaded
as global scene presets and not specific presets to objects or any other 3d
asset.
I am not sure if removing bpy.context.scene is a good idea in the first place,
unless there is another way to save
, store scene presets together with the blend file. If so , then gladly I will
update my addon. But if not , it basically
cripples / makes useless my history tool ->
http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/System/Gyes/History-Tool
________________________________
From: Campbell Barton <[email protected]>
To: Blender Foundation Python list <[email protected]>; bf-blender
developers <[email protected]>
Sent: Thursday, 20 December 2012, 4:38
Subject: [Bf-python] Addon's can no longer access context on activation.
Recently I've noticed addons using bpy.context.scene when being
imported or in the register() function.
This is really bad practice and will cause inconsistency if the addon
is enabled and a different blend file is loaded.
In the worst case accessing a removed datablock can crash which is
likely if a datablock is stored as a global variable on activation -
object_laplace_lightning.py does this.
I've changed addon loading so that they only get access to a
restricted context which only exposes 'window_manager' - needed for
adding keymaps.
Accessing other attributes now errors out with...
AttributeError: '_RestrictedContext' object has no attribute 'scene'
The addons distributed with blender don't do this but some contrib
addons do, so they will need updating
(release/scripts/addons_contrib).
----
add_mesh_clusters
gyes
io_atomblend_utilities
io_export_marmalade
io_import_LRO_Lola_MGS_Mola_img
io_import_lipSync_Importer
mesh_edgetools
mesh_fiber
mesh_show_vgroup_weights
node_categories
object_laplace_lightning
online_mat_lib
sequencer_extra_actions
space_view3d_quickPrefs
If any devs want some help updating their addons you can ask on
bf-python mailing list, though in all cases I've seen its quite
straightforward.
--
- Campbell
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