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Newest Python PEPs	2026年09月27日 03時43分
Newest Python Enhancement Proposals (PEPs): Information on new language features and some meta-information like release procedure and schedules.

PEP 849: More Expressive Type Expressions
Currently, the Python interpreter allows any expression to be used as an annotation. But their most popular usage, type annotations, are restricted to only a small subset of possible expressions. This...

PEP 824: None-coalescing operators
This PEP proposes adding two new operators.

PEP 823: None-aware access operators
This PEP proposes adding two new operators.

PEP 848: Generational Incremental Garbage Collection
This PEP proposes adding a new cyclic garbage collector to CPython. The new collector will be both generational and incremental. Collections will alternate: a young collection, then an (incremental) o...

PEP 846: Docstrings for Type Aliases
This PEP proposes preserving a string literal immediately following a type statement as the resulting type alias object’s __doc__ attribute, exposing that documentation through ast, and displaying it...

PEP 845: Leading-Dot Value Patterns
This PEP enables the use of non-attribute names as value patterns in match statements. A name prefixed with a dot is looked up using the normal name resolution rules and compared to the match subject ...

PEP 847: Problem Details for the Simple Repository API
This PEP proposes standardizing the format of error responses returned by the simple repository API.