release.yml

name: pytest
on:
    push:
    release:
     types:
       - published


jobs:
  build_sdist:
    name: Build source distribution
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - uses: actions/setup-python@v2
        name: Install Python
        with:
          python-version: '3.7'

      - name: Build sdist
        run: python setup.py sdist

      - uses: actions/upload-artifact@v2
        with:
          path: dist/*.tar.gz


  upload_pypi:
    needs: [build_sdist]
    runs-on: ubuntu-latest
    # upload to PyPI on every tag starting with 'v'
    #if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
    # alternatively, to publish when a GitHub Release is created, use the following rule:
    if: github.event_name == 'release' && github.event.action == 'published'
    steps:
      - uses: actions/download-artifact@v2
        with:
          name: artifact
          path: dist

      - uses: pypa/gh-action-pypi-publish@master
        with:
          user: __token__
          password: ${{ secrets.pypi_password }}
          # To test: repository_url: https://test.pypi.org/legacy/