This would be better as a new topic rather than reviving a 5 year old thread.
The code you have (and the code examples for most Revit API documentation) is not in Python. You need to “convert” this code to Python syntax in order to utilize it within a Python node. You would also need to write supporting code to handle your inputs, conditions, or other requirements to execute the functionality you’re looking for. There are plenty of Python references here on the forums and elsewhere. I suggest you start there.