PEP 503 – Simple Repository API

https://peps.python.org/pep-0503/

the canonical implementation that defines what the “simple” repository API looks like is the implementation that powers PyPI

Specification

The API is named the “simple” repository due to the fact that PyPI’s base URL is https://pypi.org/simple/.

https://pypi.org/simple/foo/

Within a repository, the root URL (/ for this PEP which represents the base URL) MUST be a valid HTML5 page with a single anchor element per project in the repository.

Normalized Names

re.sub(r"[-_.]+", "-", name).lower()