Hendrik Kleikamp

> There seem to be problems [with our registry](https://zivgitlab.uni-muenster.de/pymor/pymor/-/jobs/939521#L11). Any ideas, @renemilk, @HenKlei, @sdrave, @TiKeil? What about rebasing on main? This branch is 594 commits behind...

Using `tqdm` would require installing another package. Maybe we can write a less advanced and simpler progress bar instead of relying on additional external code.

That's true. Maybe we can make `tqdm` optional and not mandatory?

Right, if `tqdm` is not installed, no progress bar shows up. This way, we would not force installing `tqdm`, but provide a progress bar in the case it is installed.

> That would be a possibility, but also some extra work since we would need to duplicate all parts of tqdm's API we want to use. Why do we need...

Alright, I see.

Typer seems to also support progressbars: https://typer.tiangolo.com/tutorial/progressbar/

> Is the documentation built somewhere? Can't find it on `https://docs.pymor.org/list.html`. Maybe you want to create a branch in the main repo and create a new PR? Maybe it is...

If you like you can take a look at the changes in the tutorial [here](https://docs.pymor.org/github-push-feature-rnns/tutorial_mor_with_anns.html#neural-networks-for-instationary-problems), @sdrave.

> I was also wondering, does it make sense, that we do not provide any tutorial code for the Instationary cases? I mean I understand, that this can be found...