Hi,
I've prepared set of 25 programming questions related to python's f-strings.
You can see them running here: https://elektryczna-owca.pl/python/f-strings/
The questions are available on github under Creative Commons license: https://github.com/Elektryczna-Owca/coderunner-python .
Feel free to use them, don't forget to submit pull requests with improvements :).
I could especially use adding some teaching material there - it could be as simple as linking to relevant tutorials / documentation. If there is someone here also teaching python that would like to cooperate - let's get in touch.
Have a nice day everyone,
Tomek Muras