I've spent the last year or so comparing these packages. Initially, I liked poetry, but I began to run into issues related to client cert auth with private repositories. I and several other users who encountered these problems submitted pull requests to address them, but found that it was nearly impossible to get any of them reviewed, much less merged.

Out of frustration, I decided to try pdm instead, and although pdm doesn't handle pushing to pypi repositories, Twine works fine for it, and I have had a pain-free experience using pdm for dependency management.

I like the idea of poetry, but it's unusable if I can't get bugs fixed, and I gave up after nearly a year of trying.