Crunching Python Insider — Major new features of the 3.10 series, compared to 3.9

Introduction

Crunching Python Insider goes through all the posts (since 1th Jan, 2021) published at the official Python blog (https://blog.python.org/) and explain what the announces really means and what are the benefits you can take out of the new features — with examples when possible — and what you need to worry about.

You will see this term a lot, PEP, but what is it?
It's a Python Enhancement Proposals, see it as documentation for all changes, adds…