I also wrote a somewhat similar tool. I call it deep-ast. It's pretty flexible in what it can track. I used it when refactoring some code in urllib3, to see wha

I also wrote a somewhat similar tool. I call it deep-ast. It's pretty flexible in what it can track. I used it when refactoring some code in urllib3, to see what Exceptions could get raised along a given code path. https://github.com/DontShaveTheYak/deep-ast https://github.com/DontShaveTheYak/deep-ast