this is the code hou.node(“/obj/cam1”).worldTransform().extractTranslates()
when i type it in python shell, it works fine. but i want it apply to a obj's transform,it denied!
this is the error:
Error: Unable to evaluate expression (
Traceback (most recent call last):
File “<stdin>”, line 1, in <module>
AttributeError: ‘NoneType’ object has no attribute ‘worldTransform’
(/obj/null1/tx)).

It definitely works fine here (11.0.595).

cheers,
skk.

ps blindly I didn't notice world transform is what you're after… origin() not ch() could help you also.

The code works fine for me and there's no reason why it should be failing assuming your path to the node is correct. The error is a result of it not being able to find your specific node so double check your spelling I suppose. If that doesn't work maybe post a hip file.

i tried h11.0.504 and h11.0.581,neither works!!

You need to start the node paths with a forward slash “/”.
hou.node('/obj/sphere_object1').worldTransform().extractTranslates()

thank you very much!!