Parent a shader node

Question

It there an example of setting the parent of one shaderNode with another?

Here I am trying to make the Bsdf Principled Node the parent of the Material Output node.

    mat = bpy.data.materials.new(mat_name)
    mat.use_nodes = True
    nodes = mat.node_tree.nodes
    m = nodes['Material Output']
    d = nodes.new('ShaderNodeBsdfPrincipled')
    mat.node_tree.links.new(d.outputs['BSDF'], m.inputs['Surface']) 

    d = nodes['Principled BSDF']

    m.parent = d

When I check the value of m.parent before the assignment and after the assignment the value returned on None

I would have thought that the parenting and child process of Node should be intrinsically built into blender and if something has an output that comes from an input the parent/child relationship. I suspect blender only fills that in when you edit it through the GUI and not via python.

The parent property just reflects whether the node is parented to a backdrop aka Frame node within the node editor, in fact there is no parent-child relationship. If you want to manipulate a shader via python have a look into: Control Cycles material nodes and material properties in Python — brockmann, Feb 26 '19 at 09:19
OK maybe I misunderstand how some one else is using parents in an addon — Douglas Kastle, Feb 27 '19 at 14:21

Parent a shader node

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