Create python tests actions workflow

.github/workflows/python-tests.yml

@@ -0,0 +1,26 @@
+name: Python tests
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.6, 3.7]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    #- name: Install dependencies
+    #  run: |
+    #    python -m pip install --upgrade pip
+    #    pip install -r requirements.txt
+
+    - name: Test solutions
+      run: python -m unittest ./python/*/solution.py -v