refactor(ci): combine flake8 and pytest as 2 jobs of single workflow

Author: chaimleib

.github/workflows/flake8.yml

@@ -1,7 +1,7 @@
-# This workflow will install Python dependencies, and run tests supported versions of Python.
+# This workflow will install Python dependencies, lint, and run tests in supported versions of Python.
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
-name: pytest
+name: tests
 
 on:
   push:
@@ -13,6 +13,7 @@ permissions:
   contents: read
 
 jobs:
+
   pytest:
     strategy:
       matrix:
@@ -52,3 +53,24 @@ jobs:
       run: |
         pytest
 
+  flake8:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python 3.13
+      uses: actions/setup-python@v5
+      with:
+        python-version: 3.13
+    - name: Display Python verison
+      run: python -c "import sys; print(sys.version)"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+