quentin Corker-Marin

python doesn't understand where you are in the same way hscript does. As arctor said, you need to run eval() on the node as a python object.

The function my_node = hou.node(“/obj/path_to_node”) will return the node as a python object and store it as my_node. You can then call my_node.parm(“tx”).eval() to get the tx parameter value of this node. This is all in arctors post.

What is the error you are getting?

Also, I don't fully understand what you mean by “evaluate a parameter on the SOP within the Python Shell”? Could you upload an example scene?

can you upload a scene file that shows the problem?