Link BlackBody Shader node with blender python

Question

I'm creating a physically accurate light on Blender to recreate the Sunlight for a spatial scene. I'm using python Blender and i cannot understand how to connect shader Nodes, in particular the blackbody one, to light model. I'm using the code reported below, but the result is a total white light, without any input of color due to the shader Node. Thanks for your help!

bpy.ops.object.light_add(type='SUN', align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
bpy.context.active_object.name = SunLight["name"]
bpy.context.active_object.data.energy = SunLight["irradiance"]
bpy.context.active_object.data.angle = SunLight["angle"] / 57.2957795
bpy.context.active_object.rotation_euler = SunLight["rotation"]
bpy.context.active_object.data.use_nodes    = True
light                  = bpy.context.active_object.data
nodes                  = light.node_tree.nodes
lights_output          = nodes.get('Light Output')
lights_output.location = 0,    0
lights_output.width    = 180
node_ox                = nodes.get('Emission')
node_ox.location       = -200, 0
node_ox.width          = 180
links                  = light.node_tree.links
node_bb                = nodes.new(type="ShaderNodeBlackbody")
node_bb.inputs[0].default_value       = SunLight['temp']
node_bb.location       = -400, 0
node_bb.width          = 180
link                   = links.new(node_bb.outputs[0], node_ox.inputs[0])

I've seen that some others had obtained the wanted result with a similar code, but i can't understand the mistake.

Answer 1

Have a look into: Control Cycles/Eevee material nodes and material properties using python?

The emission node is created by default. All you really have to do is adding the blackbody node, set the properties and connect it using NodeLinks.new(): https://docs.blender.org/api/current/bpy.types.NodeTree.html?highlight=links#bpy.types.NodeTree.links

import bpy
import math
bpy.ops.object.light_add(type='SUN')
obj = bpy.context.active_object
Sun properties
obj.data.energy = 1
obj.data.angle = math.radians(50)
obj.rotation_euler.x = math.radians(45.0)
obj.location.z = 2
Nodes
obj.data.use_nodes = True 
node_tree = obj.data.node_tree
nodes = node_tree.nodes
links = node_tree.links
Default emission node
emit_node = nodes.get("Emission")
if emit_node:
    # Add blackbody node
    blackbody_node = nodes.new(type="ShaderNodeBlackbody")
    blackbody_node.location = (emit_node.location.x -200, emit_node.location.y)
    blackbody_node.inputs['Temperature'].default_value = 2300
    links.new(blackbody_node.outputs['Color'], emit_node.inputs['Color'])