Editing Lamp Strength with Python

Question

I am trying to animate changing brightness of a point lamp using input data that I have. However, when I try to access the lamp's strength using

bpy.data.node_groups["Shader Nodetree"].nodes["Emission"].inputs[1].default_value

I get the error message:

Traceback (most recent call last):
File "<blender_console>", line 1, in <module>
KeyError: 'bpy_prop_collection[key]: key "Shader Nodetree" not found

Is there another way I can/should access and change the lamp's strength via Python?

$\begingroup$ you can find the answer here $\endgroup$
– João Cartucho
Commented May 24, 2019 at 7:47 — João Cartucho, Commented May 24, 2019 at 7:47

kilbee · Accepted Answer · 2015-10-04 22:14:31Z

2

Yes, reach node_tree through lamp object bpy.data.lamps['lamp name'].node_tree.nodes.

answered Oct 4, 2015 at 22:14

kilbee

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$\begingroup$ This works great! I'm now trying to add keyframes for the changing lamp strength, what should go in the data_path parameter? $\endgroup$
– wjkaufman
Commented Oct 4, 2015 at 22:17
$\begingroup$ My guess is 'default_value', since you keyframing a node input. $\endgroup$
– kilbee
Commented Oct 4, 2015 at 22:24

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