Update main.yml

.github/workflows/main.yml

@@ -5,6 +5,24 @@ on:
       - main
 jobs:
   build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:  # https://github.com/stefanzweifel/git-auto-commit-action#checkout-the-correct-branch
+            ref: ${{ github.head_ref }}
+      - uses: actions/setup-python@v1
+      - run: pip install black
+      - run: black --check .
+      - name: If needed, commit black changes to a new pull request
+        if: failure()
+        run: |
+          black .
+          git config --global user.name github-actions
+          git config --global user.email '${GITHUB_ACTOR}@users.noreply.github.com'          
+          # git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY
+          git commit -am "Format Python code with psf/black push"
+          git push origin main
+  deploy:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2