Thanks. I'm making incremental progress. The thing I am still confused about is how the actual program becomes involved. If I click on the forearm in the Poser window, how do I get PyCharm to return that Actor with CurrentActor()? Another example, I have Poser open now with 30 key frames:

Yet, when I run my .py file which imports your fake Poser library, the number of frames is returned as 1:

My main goal is to calculate joint positions of the Poser skeleton in time, and then animate the skeleton using matplotlib.