Discuss: Underrated PyLibs that software devs use, list your fav!

I am primarily a django dev, I recently came across a website called djangopackages and I just got hooked up. All django libraries categorised and ordered. I literary went through all packages it has to offer.

Now, I was wondering, if there is something like this for python. (I couldn't find it ) . In past I used some awesome libs like tenacity, decouple and pendulum, but almost all of them were told to me, by some senior dev.

Most of top ten list is about ML or AI, but python is much more than that!

If you have your own browsing website or If you have any libs that you want to shed some light on, feel free to comment, we can make this thread as a glorified python-libs list.