blender/doc/python_api/examples/bpy.props.4.py
Bastien Montagne fd57f520ac Py API doc: Add warning that py-defined property accessor callbacks may be called in threaded context.
At least Depsgraph evaluation and liboverride diffing do process IDs in
parallel, so python code in py-defined properties should not access any
data outside of their owner ID.

Ref. T100203.
2022-08-12 16:23:12 +02:00

27 lines
581 B
Python

"""
Update Example
++++++++++++++
It can be useful to perform an action when a property is changed and can be
used to update other properties or synchronize with external data.
All properties define update functions except for CollectionProperty.
.. warning::
Remember that these callbacks may be executed in threaded context.
"""
import bpy
def update_func(self, context):
print("my test function", self)
bpy.types.Scene.testprop = bpy.props.FloatProperty(update=update_func)
bpy.context.scene.testprop = 11.0
# >>> my test function <bpy_struct, Scene("Scene")>