GitHub Action - Setup and Cache Python Poetry

This GitHub action simplifies the setup and caching of Poetry dependencies for Python projects.

When a job using this action runs for the first time, this action will download Poetry and the required project dependencies, then save it to the cache.

For the following runs (whether it's on a different workflow/job with the same cached commit) this action will restore the cache, which is much faster than downloading everything again.

Basic Usage

• Make sure you have pyproject.toml, poetry.lock.

name: ci

on:
  push:
    branches: [ master ]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      # Deal with environment setup and caching      
      - name: Check out the repository
        uses: actions/checkout@v4
      - name: "Setup Python, Poetry and Dependencies"
        uses: dsoftwareinc/setup-python-poetry-action@v1
        with:
          python-version: 3.11
          poetry-version: 1.7.1
          poetry-install-additional-args: '-E flag' # Optional

      # Run what you want in the poetry environment
      - name: Run tests
        run: |
          poetry run python manage.py test

Input variables:

Name	Description	Required	Default value
python-version	Python version to use.	Yes	n/a
poetry-version	Poetry version to use.	Yes	n/a
poetry-install-additional-args	Additional arguments to pass to poetry install.	No	""

Notes

• You can see the list of cache entries by going to: Repo -> Actions tab -> Caches under Managements (left navbar, at the bottom).
• Don't forget the limitation of cache.

Dependencies

• Python setup using actions/setup-python.
• Poetry install using snok/install-poetry.
• Poetry binary and dependency caching using actions/cache.

License

The scripts and documentation in this project are released under the MIT License.