Add Github workflow to lint and test the extension

Author: Hisham ElSheshtawy

.github/workflows/python-package.yml

@@ -0,0 +1,37 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: Python package
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.5, 3.6, 3.7, 3.8]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements-dev.txt
+    - name: Lint
+      run: |
+        black quart_prometheus_logger.py utils.py --check
+        mypy quart_prometheus_logger.py utils.py
+        pylint quart_prometheus_logger.py utils.py
+    - name: Test with pytest
+      run: |
+        pytest

utils.py

@@ -1,5 +1,6 @@
 from datetime import datetime, time, timezone
 
+
 def now_utc() -> datetime:
     """Get a timezone-aware representation of now()."""
     return datetime.now(timezone.utc)