Run a module without any functions

[alecmev]

• I have searched the issues of this repo and believe that this is not a duplicate.

Issue

I'm writing a simple one-off script, without any functions, and I'd like to run it through Poetry, in its virtual environment. However, it appears this currently isn't possible, as Poetry expects a callable:

https://github.com/sdispater/poetry/blob/af8f86cda703144e9261b700d3165433aa2d3603/poetry/console/commands/run.py#L35-L37

My Python is rusty, so maybe there's a way around this (which makes it a documentation concern), but if there isn't, I suggest adding a quick heuristic, checking for the presence of a colon, and just executing import_module('{}') instead of import_module('{}').{}() otherwise.

[cauebs]

This was proposed in #241 and implemented in #304. While it's waiting to be merged (or even rejected), you can just wrap your code in a function and call it immediately after that.

If that other proposal fits your needs as well, consider closing this one, just to keep all the discussion in one place ;)

[alecmev]

Thanks for the links! Haven't seen those.

I haven't tried the PR, but it seems it's about distribution, not running? I don't think it'll make poetry run main work with this pyproject.toml:

[tool.poetry.scripts]
main = { path = "main" }

And this main.py:

print("Hello world!")

Or am I missing something?

[cauebs]

It allows you to specify not just entry points (python functions), but any script, by setting its path.

[tool.poetry.scripts]
main = { path = "main.py" }

~/project $ poetry run main

Edit: yes, this will make that script available when you install this package, but it will also be made available in your environment when you do poetry develop (because this just installs the package in editable mode).

[alecmev]

Okay, sorry, wasn't evident from the PR's diff. Last question, is it run inside Poetry's virtual environment?

[cauebs]

I'm not sure, really. I haven't played much with that fork. But I still think you should just wrap it in a function, hahah

[alecmev]

Have already done that, of course 😄 Not a fan of wasting horizontal space for nothing though. Just checking whether that PR covers my usecase before closing.

[RaptDept]

Thanks for the clarification! I wanted to run a script directly, too, but I wasn't aware of the path parameter for tool.poetry.scripts. I don't think it's documented yet.

[cauebs]

@RaptDept Maybe it's not as visible as it should, but it's there: https://poetry.eustace.io/docs/pyproject/#scripts

[RaptDept]

Oh, I misunderstood. I didn't realize the path feature was still in a pending PR.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

Closing this issue automatically because it has not had any activity since it has been marked as stale. If you think it is still relevant and should be addressed, feel free to open a new one.

[dimaqq]

I'm still confused how to achieve what OP wanted or if it's even possible.
The docs are so skimpy, they are hardly helpful 😭
If someone knows, please shed some light 💡

[wohali]

It's not ready yet, but there's 2 things coming (maybe?) that may help:

• Support for application-first, library-first, and non-package modes that change Poetry defaults #1132
• Improve script section: support use of script files #2310 (comment)