Update run_pytest.yml

.github/workflows/run_pytest.yml

@@ -1,32 +1,27 @@
-on:
-  - push
-  - pull_request
+name: pytest
 
-name: Run pytest
+on: [push]
 
 jobs:
-
   build:
-    name: Build
+
     runs-on: ubuntu-latest
     strategy:
-      max-parallel: 4
+      max-parallel: 3
       matrix:
         python-version: [3.5, 3.6, 3.7]
+
     steps:
-
-    - uses: actions/checkout@master
-
-    - name: Set up Python $
-      uses: actions/setup-python@master
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
       with:
-        version: $
-
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt
-
     - name: Test with pytest
       run: |
-        pytest
+        pip install pytest
+        pytest -c test/pytest.ini