how to run a script using pyproject.toml settings and poetry?

At the moment the [tool.poetry.scripts] sections is equivalent to setuptools console_scripts.

So the argument must be a valid module and method name. Let’s imagine within your package my_package, you have log_revision.py, which has a method start(). Then you have to write:

[tool.poetry.scripts]
my-script = "my_package.log_revision:start"

Here’s a complete example:

You should have this folder structure:

my_package
├── my_package
│   ├── __init__.py
│   └── log_revision.py
└── pyproject.toml

The complete content of a functional pyproject.toml is:

[tool.poetry]
name = "my_package"
version = "0.1.0"
description = ""
authors = ["Your Name <you@example.com>"]

[tool.poetry.dependencies]
python = "^3.8"

[tool.poetry.scripts]
my-script = "my_package.log_revision:start"

[build-system]
requires = ["poetry_core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

and in my_package/log_revision.py:

def start():
    print("Hello")

After you have run poetry install once you should be able to do this:

$ poetry run my-script  
Hello

You cannot pass something to the start() method directly. Instead you can use command line arguments and parse them, e.g. with python’s argparse.

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