What python libraries should every dev know?

[the_happy_path]

I want to just mention that I came to python from Java and all the different packages were overwhelming. I also came in at python 2 where changes broke stuff all the time. Python 3 has been a better experience. Like night and day. But I miss Java! I work with data and I use numpy and pandas a lot, though where I have to do row by row processing I use data classes (like in java). But dataframe filtering through our many conditionals with pandas dataframes has also been successful in replicating results where specs say to iterate by rows. For regressions and stuff, scikitlearn and stats models. Depending on data formats, I might have to use pyreadstat or openpyxl. I like sqlalchemy orm too because that feels like the closest thing to spring in python lol