What's New in Python
The "What's New in Python" series of essays takes tours through the most important changes between major Python versions. They are a "must read" for anyone wishing to stay up-to-date after a new release.
3.16.rst 3.15.rst 3.14.rst 3.13.rst 3.12.rst 3.11.rst 3.10.rst 3.9.rst 3.8.rst 3.7.rst 3.6.rst 3.5.rst 3.4.rst 3.3.rst 3.2.rst 3.1.rst 3.0.rst 2.7.rst 2.6.rst 2.5.rst 2.4.rst 2.3.rst 2.2.rst 2.1.rst 2.0.rst
The "Changelog" is an HTML version of the file built<blurb> from the contents of the Misc/NEWS.d directory tree, which contains all nontrivial changes to Python for the current version.
changelog.rst