Add test_code.yml

.github/workflow/test_code.yml

@@ -0,0 +1,17 @@
+name: test-code
+on: [push, pull_request]
+jobs:
+  lint-python-code:
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v1
+      - uses: ricardochaves/python-lint@v1.4.0
+        with:
+          python-root-list: "screen.py ks_includes panels"
+          use-pylint: false
+          use-pycodestyle: true
+          use-flake8: false
+          use-black: false
+          use-mypy: false
+          use-isort: false
+          extra-pycodestyle-options: "--ignore=E226,E301,E302,E303,E402,W503,W504 --max-line-length=80 --max-doc-length=80"