This PEP proposes variant wheels, an extension to packaging:specifications/binary-distribution-format that permits building multiple variants of the same package while embedding additional...

This PEP proposes allowing Unpack[TypedDict] in the parameter list inside Callable, enabling concise and type-safe ways to describe keyword-only callable signatures. Currently, Callable assumes...

Replace type and module slots with a new structure: a tagged anonymous union with flags. This improves type safety and allows adding new slots in a more forward-compatible way.

This PEP proposes introducing JSON encoded core metadata and wheel file format metadata files in Python packages. Python package metadata (“core metadata”) was first defined in PEP 241 to use RFC...

Python’s existing wheel packaging format uses packaging:specifications/platform-compatibility-tags to specify a given wheel’s supported environments. These tags are unable to express modern...

Pyodide is a distribution of Python for JavaScript runtimes, including browsers. Browsers are a universal computing platform. As with C for Unix family operating systems, in the browser platform...

This PEP describes the “pretty print protocol”, a collection of changes proposed to make pretty printing more customizable and convenient.

This PEP outlines the expected support for WASI by CPython. It contains enough details to know what WASI and WASI SDK version is expected to be supported for any release of CPython while official...

This PEP proposes formalizing the membership and responsibilities policies of the Python Security Response Team (PSRT). The PSRT is a “highly trusted cabal of Python developers” which handles...

This PEP proposes a standard mechanism through which arbitrary Python package indices can support “Trusted Publishing,” a misuse-resistant credential exchange scheme already implemented by the...

The Stable ABI as abi3 can no longer be preserved, and requires replacement. abi2026 will be the first replacement, providing resolution of current known incompatibilities, with planned retirement...