The Python Codex – A Free, Story-Driven Python Tutorial I Wish I Had

I learned Python the messy way – years of Googling, Stack Overflow, no real book. So I finally wrote the one I wish I had.

It's The Python Codex – free, no paywall, no signup:

👉 https://py.qizhen.xyz/en/

I wrapped it in a little story – a journey to the planet Pythora where Python runs reality – but underneath it's a proper tutorial:

Part 1: Fundamentals
Part 2: Functional Programming
Part 3: OOP
Part 4: Data Structures & Algorithms with interview questions
Part 5: Python in the wild – viz, web, networking
I built it as an open book, you can comment or click "Edit this page" on any page.

If you're learning Python, give it a try. I'd love to hear what's confusing or what's missing.