tracking dependencies

[Michele Simionato]

I have a big framework (not written by me) with lots of internal
dependencies and I am
looking for a tool to see the dependency tree. I.e. given a module x,
it should show me all the modules imported by x, and the modules
imported
by them recursively. Standard library modules should be ignored
and there should be an option to turns off the visualization of certain

modules, for instance the ones in given subpackages. I guess somebody
has already written it, maybe even with
a nice visual backend. Any hint?

           Michele Simionato