While automatically installing the dependencies for Python-based tutorials is convenient for some use cases (new user runs such a tutorial on their system), it is inconvenient when using a system already prepared. This includes:

1. training systems (USB/VM), where we provide a virtual environment already prepared, and which should work offline.
2. system tests, where we want to test specific versions (see also Propagating Python bindings version in system tests (conflict with requirements.txt) #584).

We could provide an option to these scripts to skip installing the dependencies (e.g., --skip-setup).

This would simplify a few aspects, and would be an easy solution for #584.

Also related to #547 and #526.

I want to work on this soon.