How to change the selected vertex bevel weight with python?

Question

How do I change the Bevel Weight of the selected vertex using Python? I need to find the selected vertex, maybe as a list? and then change its bevel weight.

Answer 1

You have to be in Object Mode to set the Bevel Weight via Python. In the following example I set all vertices of my Default Cube or bpy.context.object to have bevel_weight = 0.77 and then override the vertex at index 0 to have a bevel_weight = 0.44.

import bpy

bpy.ops.object.mode_set(mode='OBJECT')

obj = bpy.context.object
vertices = obj.data.vertices

# change bevel weight for every vertex
for v in vertices:
    v.bevel_weight = 0.77

# change bevel weight for selected vertex
selected_verts = [v for v in vertices if v.select]
for v in selected_verts:
    v.bevel_weight = 0.55

vertices[0].bevel_weight = 0.44 # change bevel weight for vertex at index 0