Ages ago (back when Python 2.5 was still a thing) I used a lib that would generate a call graph for Python programs. I think it was this one: http://pycallgr

Ages ago (back when Python 2.5 was still a thing) I used a lib that would generate a call graph for Python programs. I think it was this one: http://pycallgraph.slowchop.com/en/master/ I don't remember much, but I think this wasn't terribly useful at the time, because it became very messy very quickly. Any moderately complicated application will be calling a dozen functions, and the graph then becomes a gigantic mess of interconnected nodes which is very hard to read. But like I said, it was ages ago, so I don't know how good/bad it is now.