added checking for release versions on PyPI

[mattpaletta]

No description provided.

[di]

Hi @mattpaletta, thanks for the PR.

This project attempts to replace usage of pip's internal API, but still continue to use pip. Generally that means that functions defined on pip-api's API should essentially be wrapping some command-line pip command. I can understand wanting to cut out the "middleman" here and just use PyPI's API directly, but it's important that this is the pattern used by this project.

To my knowledge, pip doesn't have a command that would give all versions for a given package, or the latest version of a package, so this might be difficult to implement.

If you could point me to some examples of how the internal pip APIs that this should replace are currently being used, it might be helpful to direct this PR.

[jayvdb]

OTOH, if you are looking for another home for this feature, hugovk/top-pypi-packages#4 (comment) lists some suitable projects which publish metadata extracted from PyPI, and PyPI clients which have extra features like this.