Zero-configuration GitHub Action to maintain code quality with push and PR annotations.

On every push and pull request git diffs will get inline annotated with found errors from selected linters.

• Zero configuration based: Add a single line in your CI and done!
• GitHub Annotations on PR: Highlights issues inline on the PR diff.
• Most of the popular community trusted linters in one place.
• Allows to use either a new or existing Python version using use-external-python. See this example.

• black
• flake8
• isort
• mypy
• pylint
• pycodestyle
• vulture
• pydocstyle

Basic:

steps:
  - uses: actions/checkout@v6
  - uses: marian-code/python-lint-annotate@v4

Options:

steps:
  - uses: actions/checkout@v6
  - uses: marian-code/python-lint-annotate@v4
    with:
      python-root-list: "src/ tests/*"  # accepts wildcards
      use-pycodestyle: false
      use-mypy: false
      use-vulture: true
      extra-pylint-options: "--output-format="colorized"
      python-version: "3.10"

• Only lint changed files, and ignore missing docstrings

Uses actions/setup-python@v6. Only python 3.10 - 3.14 versions are tested. Python 3.x versions prior to 3.10 are not tested since they are EOL now. Any python 2.x versions are unsupported! You can lint on Linux, Windows and MacOS.

The linter versions are defined in requirements.txt.

The python version is set by actions/setup-python@v6 using composite actions. This means that the the action will change python you might have previously set with actions/setup-python@v6. There are two ways to circumvent this.

• Keep the lintnig action separated from others
• Use it at the and of your workflow when the change in python version will not affect anything else

Example:

on:
  push:
  pull_request:
name: Lint Python
jobs:
  lintpython:
    name: Lint Python
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v6
    - uses: actions/setup-python@v6
      with:
        python-version: 3.10
    - run: |
        python --version  # this will output 3.10 now
        run tests or other things using python ...
    - uses: marian-code/python-lint-annotate@v4
      with:
        python-root-list: "./tests/*.py"
        use-black: true
        use-isort: true
        use-mypy: true
        use-pycodestyle: true
        use-pydocstyle: true
        extra-pycodestyle-options: "--max-line-length=88"
        use-pylint: false
        use-flake8: false
        use-vulture: true
        python-version: "3.10"
    - run: |
        python --version  # this will output 3.10 now !!!

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

Contributions are welcome through PRs.

Wait until this is resolved: PR646 so we can implement better python version control