Hello:
I am executing a USD ROP node by:

rop.parm("execute").pressButton()

But, I want to know if the process was interrupted by the user in the UI. Right now I check the rop.errors(), but is there any other way. As in, a python function to call that will have a return code/raise exception I can examine after the execute? Just wondering what the best practice would be, thank you!

if all else fails you could use a post frame script that sets an extra parm on the ropnode to the last frame number that is rendered. Then a post render script that emits some exception event you could catch elsewhere if the last rendered frame value is less then the end of the frame range. #FridaySolutions