Create yapf_autoformat

.github/workflows/yapf_autoformat

@@ -0,0 +1,56 @@
+name: YAPF autoformat
+
+on:
+  push:
+    paths:
+      - "**.py"
+
+jobs:
+  build:
+    name: YAPF Formatter
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: checkout repo
+        uses: actions/[email protected]
+        with:
+          repository: ${{ github.repository }}
+          token: ${{ github.token }}
+
+      # https://github.com/diegovalenzuelaiturra/yapf-action
+      - name: YAPF Formatter
+        uses: diegovalenzuelaiturra/yapf-action@master
+        with:
+          args: . --verbose --recursive --in-place --parallel
+
+      - name: action metadata
+        run: |
+          echo -e "action     : ${{ github.action }}"
+          echo -e "actor      : ${{ github.actor }}"
+          echo -e "event_name : ${{ github.event_name }}"
+          echo -e "job        : ${{ github.job }}"
+          echo -e "ref        : ${{ github.ref }}"
+          echo -e "repository : ${{ github.repository }}"
+          echo -e "run_id     : ${{ github.run_id }}"
+          echo -e "sha        : ${{ github.sha }}"
+          echo -e "workflow   : ${{ github.workflow }}"
+          echo -e "workspace  : ${{ github.workspace }}"
+
+      - name: config github
+        run: |
+          git config user.name github-actions
+          git config user.email [email protected]
+
+      - name: add changes
+        run: |
+          git add .
+
+      - name: commit changes
+        run: |
+          git commit -m "Autoformatted to YAPF" --all | exit 0
+
+      # NOTE : only push changes when the source branch is being pushed to master (target branch)
+      - name: push changes
+        if: github.ref == 'refs/heads/master'
+        run: |
+          git push