try to generate coverage report

.github/workflows/python-tests.yml

@@ -37,4 +37,9 @@ jobs:
       - name: Test with pytest
         run: |
           pip install pytest pytest-cov
-          pytest --cov-report=html --junitxml=report.xml -v tests/
+          pytest --cov-report html --cov="./coverage-report/" tests/
+      - name: upload coverage data
+        uses: actions/upload-artifact@v3
+        with:
+          name: coverage-report
+          path: ./coverage-report/