the differences between the course and the current Python version (3.9 in the notebooks, and very soon 3.10) are widening
that week could use a thorough review in this respect

one student pointed at least at an error caused by this
shrimpy-dev/shrimpy-python#10

probably more of those to fix; it might make sense to target 3.10 directly ? (as there are more slight changes in there again…)