Slim-source/python-libraries-trial2 ? reverse-engineered prompt

I want you to turn this into a clean Jupyter notebook that reads like a simple revision guide for Python libraries I’ve been learning.

Make it easy to follow, with short explanations and runnable examples for the most useful everyday libraries, like working with data, files, dates, math, and plotting. Keep it beginner friendly, with clear section headings, code cells, and small notes that explain what each example is doing. I’d also like a few practice snippets or mini exercises mixed in so I can test myself as I go.

Please make the notebook look neat and organized, not like rough class notes. If you need to check current library examples or best practices, look them up online first. The goal is to have one polished notebook I can use to review the basics and quickly remember how these libraries work.