Add python linting.

.github/workflows/ci.yml

@@ -7,7 +7,48 @@ on:
     tags:
       - '[0-9]+.[0-9]+.[0-9]+'
 
+env:
+  MAX_LINE_LENGTH: 99  # TODO: would we like to increase this to 120?
+
 jobs:
+  python-lint-black:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v3
+
+      - name: Python Setup
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+          architecture: x64
+
+      - name: Lint Python with Black
+        uses: psf/black@stable
+        with:
+          options: "--check --verbose --max-line-length=${MAX_LINE_LENGTH}"
+
+  python-lint-flake8:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Python Setup
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+          architecture: x64
+
+      - name: Checkout Source
+        uses: actions/checkout@v3
+
+      - name: Install flake8
+        run: pip install flake8
+
+      - name: Syntax Error Check
+        run: flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+
+      - name: Code Style Check
+        run: flake8 . --count --max-line-length=$MAX_LINE_LENGTH --ignore=W503 --show-source --statistics
+
   test:
     runs-on: ubuntu-latest
     steps: