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Comment by nvrspyx | Hacker News Reader

I haven't looked much into it myself, but I've heard good things about Poetry [0].

Poetry is good, but you should be aware that people with legacy versions of pip (I think before 19, see PEP 517) won't be able to pip install from your repository directly. That means anyone using pip installed with their package manager (up to the lastest version of Debian/Ubuntu in fact, which only provide v18). This doesn't affect installs from PyPI of course. So either you just accept this, or you also maintain a setup.py file as well. That's fine, but Poetry doesn't automatically bump version numbers in setup.py (as far as I know) so you need to do a couple of extra steps when you build.

On the other hand, setting up a deploy key to PyPI and then using poetry build, poetry publish is very easy compared to using twine which I found often did daft things like upload mixed versions to PyPI unless the build directory was clean. Poetry seems to handle that a lot better.

having just converted a large project/monorepo to poetry, its pretty easy to generate setup.py/requirements from pyproject.toml https://github.com/cloud-custodian/cloud-custodian/blob/mast...

note most of this just working around poetry for multiple packages in a single repo, with interdependencies. flip side, our pip/setuptools users building trunk from ci are unaffected.

that said there are open questions on poetry (governance/dev community), but the experience is overall pretty solid with a some minor rough edges, and the fact that it has a usable api makes those pretty minor. in contrast the only api on pip is cli arguments for subprocess/fork.

This looks great. Can anyone who's used both comment on how poetry compares to yarn[0]?

[0] https://yarnpkg.com/

I think of Poetry as the Yarn of Python packaging for two main reasons (apart from package locking, which is the biggest similarity): the commands are more intuitive and the lockfile starts with a different letter from the dependency file. I don't know how many times I open package-lock.json instead of package.json because I tab-complete from my shell. Same with Pipfile and Pipfile.lock for anyone using Pipenv.

I wrote this post[0] that compares Poetry and Pipenv if you're interested and talks about some of their differences. Poetry has both add and install commands, whereas Pipenv only has an install command, for instance.

[0] https://johnfraney.ca/posts/2019/03/06/pipenv-poetry-benchma...

Thanks, that's helpful and illustrative! Is poetry as good as yarn?

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