I'm using guppy since it is much simpler to use. Analyzing object graphs looks more tedious approach.
I attached to embedded Python code (just Python language selected) and once any of my breakpoints hit, I opened the "python debug interactive" window. it works fine until I try to inspect the heap where everything stalls:
from guppy import hpy
The same issue in the watch window which complains for last line:
Unable to evaluate the expression.