saladism/python-deepdive ? reverse-engineered prompt

Build me a clean Python learning repo for a deep dive course, with four sections covering functional programming, iterables and generators, hash maps, and object oriented programming.

I want it organized as a set of Jupyter notebooks plus a few Python source examples, so someone can open each part and learn by running the code and reading the explanations. Keep the examples practical and easy to follow, with comments and small demos that show how each concept works in real life. Make sure it runs on Python 3.6 or newer.

Please set it up so the parts are easy to browse separately, and keep the content polished enough that it feels like course companion material. If you need to check current notebook or Python best practices, look them up online.