Graph Python calls

Context

	Last updated	Rejected because
Python Call Graph	2018-02-08	Unmaintained
pyan	2021-02-15	Unmaintained. Crashed for me.
PyCG	2023-11-26	Archived; also I cannot find how to generate graphical output.
Callgraph		Is not a static analysis tool, requires decorators on functions.
code2flow	2023-01-09