ci: add GitHub action for linting, testing and coverage

Add flake8 config in setup.cfg file

Author: devcarron

.github/workflows/python-lint-test.yml

@@ -0,0 +1,44 @@
+# 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: Run tests and lint
+
+on:
+  push:
+    branches: [ master, dev ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test-and-lint:
+
+    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
+        python -m pip install flake8 pytest coveralls
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - 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
+    - name: Test with pytest
+      run: |
+        coverage run --omit='*/virtualenv/*,*/site-packages/*' -m pytest
+    - name: Publish coverage
+      env:
+        COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+      run: |
+        coveralls

setup.cfg

@@ -0,0 +1,4 @@
+[flake8]
+exclude = .git,__pycache__,build,dist,.env,.venv,venv
+max-line-length = 160
+ignore = E501