autoyapf

Worried whether your Python code is following the style guidelines or not? Well, you don't need to do that now 😄

autoyapf is a GitHub action for yapf, an open-source tool that automatically formats Python code to conform to the PEP 8 style guide. It is in essence, the algorithm that takes the code and reformats it to the best formatting that conforms to the style guide, even if the original code didn't violate the style guide.

This action is designed to be used in conjunction with the 'push' trigger. In simple words - everytime the maintainer pushes the code from their own playground or merges a Pull Request from a contributor it will be formatted automatically with the PEP 8 Style guidelines using the yapf tool. This action is a win-win situation for both contributors and maintainers of projects involving Python! Yes, you heard it right!

This action will immensely help in increasing the speed of development cycle of projects as you will no longer need to worry about whether clean code is being produced or not as autoyapf action will take care of that 🎊

Usage

Step 1:

Create a .github/workflows directory in your repository and inside this directory create a workflow .yml file (give the file a name like autoyapf.yml). An example workflow is available below. For more information, reference the GitHub Help Documentation for Creating a workflow file.

Step 2:

Copy the workflow example below in the .yml file you created in .github/workflows directory. The following workflow is a simple example to demonstrate how the action works.

name: Formatting python code
on:
  push:
    paths:
    - '**.py'
jobs:
  autoyapf:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@master
        with:
          ref: ${{ github.head_ref }}
      - name: autoyapf
        id: autoyapf
        uses: mritunjaysharma394/autoyapf@v2
        with:
          args: --style pep8 --recursive --in-place .
      - name: Check for modified files
        id: git-check
        run: echo ::set-output name=modified::$(if git diff-index --quiet HEAD --; then echo "false"; else echo "true"; fi)
      - name: Push changes
        if: steps.git-check.outputs.modified == 'true'
        run: |
          git config --global user.name 'github-actions' 
          git config --global user.email 'github-actions@github.com' 
          git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}
          git commit -am "Automated autoyapf fixes"
          git push

Note: The GITHUB_TOKEN is provided by Actions; you do not need to create your own token.

Working example

This configuration will work something like this. As an example here, my friend Naman is contributing to the Project with a Pull Request of a code that is not formatted or styled. On merging this PR, autoyapf action will be triggered which will automatically style the code according to PEP-8 Guidelines.:

1. Pull Request Initiated by Naman which I later merged