I'm not familiar with these tools specifically, but here is how I would approach it. It's also kinda hard to express how to properly use a gui interactively through text, so if you are new to a debugger in general it might be good to start with some tutorials. Jetbrains has some PyCharm debugger tutorials online.
PyCharm debugger tutorial 1
PyCharm debugger tutorial 2
When you are running the debugger, set breakpoints and you can see all of the local variables in the scope to your current object. If you are wanting to monitor 2 places, you could set 2 breakpoints. Or you could stop at one and move forward (look at Step Over, F8
and Step Into, F7
until the second object is available. I think specifically for you I would look at the Debugger, Frames
. Essentially you can jump backwards in time from your current breakpoint to where your current function was called, and so on and so forth for ~10 calls. This might get you what you are looking for, but it is somewhat project dependent unfortunately.