split lint and format actions

.github/workflows/auto_format_pep8.yml

@@ -0,0 +1,32 @@
+name: black
+
+on:
+  push:
+    paths:
+      - '**.py'
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  black:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.x
+      - name: Install black
+        run: |
+          python -m pip install --upgrade pip
+          pip install black==22.1.0
+      - name: Run black
+        run: |
+          black . --line-length=120
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: "[skip ci] Apply formatting changes"

.github/workflows/pep8_linting.yml → .github/workflows/auto_lint.yml

@@ -25,12 +25,6 @@ jobs:
           python -m pip install --upgrade pip
           pip install flake8
           flake8 . --show-source --statistics --max-line-length 120
-      - name: Install black
-        run: |
-          pip install black==22.1.0
-      - name: Run black
-        run: |
-          black .
       - uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: "[skip ci] Apply formatting changes"