How to add a shortcut to a custom script in pyproject.toml (using poetry)

I recently switched to Poetry from Pipenv. I'm used to having this section in my Pipfile:

[scripts]
test="pytest -s"
test:watch="ptw --runner 'pytest -s'"

so I can easily run my tests without typing out the full command or entering the shell, e.g.:

pipenv run test:watch

When I try something similar in pyproject.toml:

[tool.poetry.scripts]
watch = "ptw --runner 'pytest -s'"

I get an error:

$ poetry run watch

not enough values to unpack (expected 2, got 1)

Is there a different section in the pyproject.toml that I should be using for this?

[tool.poetry.scripts] entries in a Poetry pyproject.toml file do not serve the same purpose as [scripts] entries in Pipenv's Pipfile. Here is the documentation for Poetry's scripts. It is meant for console_scripts entry points, and the values should be of the form: importable.module:object.attr.

What you might want to use to achieve your goal is something like poethepoet or any other similar "task runner" tool, for example:

• chuy (see also: poetry-chuy-plugin)
• doit
• invoke (see also poetry-pyinvoke-plugin)
• poethepoet
• poetry-exec-plugin
• taskipy
• thx

The error you're seeing suggests that there may be an issue with the command itself. One thing to check is if the command is correctly quoted, since ptw and pytest -s should be treated as separate arguments. Try changing your script definition to:

(c#)

[tool.poetry.scripts] watch = "ptw --runner 'pytest -s'"

To

(Swift)

[tool.poetry.scripts] watch = "ptw --runner \"pytest -s\""

and see if that resolves the error.