I don't know, but I have a suspicion you haven't read these cover to cover. Or maybe you have, for the latest version 10+ years ago. Is your advice to read the diffs when they update?
Is your career in programming in Python? Then perhaps taking 4 weeks to read the Python docs a few hours a day, is worth the 30+ years you will be using that knowledge 40 hours every week (60,000 hours of work). And yeah, changelogs are there for a reason.
Python language - Number of pages: ~206 ( https://docs.python.org/3/download.html )
Python standard library - Number of pages: ~2337 ( https://docs.python.org/3/download.html )
I don't know, but I have a suspicion you haven't read these cover to cover. Or maybe you have, for the latest version 10+ years ago. Is your advice to read the diffs when they update?