Hi!

There is no mention and usage of "debug = True" in the course. However it is quite helpful since otherwise you don't see an error if you did something wrong and the server is not restarting automatically.

I guess I would just add it here: http://opentechschool.github.io/python-flask/core/hello-world.html and explain it shortly with the hint that it should never be on in production.

Another possibility would be adding an own section "debugging". However I think this should be at the beginning though, so it can help people in later sections.

Best,
Finn