Python Language Reference
The Python Language Reference is the official, authoritative specification of the Python programming language.
Python 3.9.0 was released in October 2020. It introduced the following new language features:
- union operators added to
- type hinting generics in standard collections
- relaxed grammar restrictions on decorators
See What’s New In Python 3.9 for more details.
We have not (yet) cross-referenced this language specification with our misconceptions. To find misconception by language specification section, pick one of the cross-referenced specifications.