upload-to-pip.yml

name: Upload to PIP

on:
  # Triggers the workflow when a release is created
  release: 
    types: [created]
  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

jobs:
  upload:
    runs-on: ubuntu-latest
    steps:
      # Checks-out repository under $GITHUB_WORKSPACE
      - name: "Checkout repository and submodules"
        uses: actions/checkout@v2
        with:
          submodules: recursive

      # Set up python
      - uses: actions/setup-python@v2
        with:
          python-version: 3.8

      # Set package version number
      - name: Set version number to release number
        run: |
          VERSION=${{github.event.release.tag_name}}
          PLACEHOLDER='version="main"'
          VERSION_FILE='setup.py'
          # ensure the placeholder is there. If grep doesn't find the placeholder
          # it exits with exit code 1 and github actions aborts the build. 
          grep "$PLACEHOLDER" "$VERSION_FILE"
          sed -i "s/$PLACEHOLDER/version = \"${VERSION}\"/g" "$VERSION_FILE"
        shell: bash

      # Install dependencies
      - name: "Install dependencies"
        run: |
          python3 -m pip install --upgrade pip
          python3 -m pip install setuptools wheel twine

      # Build and upload to PyPI
      - name: "Build and upload to PyPI"
        run: |
          python3 setup.py sdist bdist_wheel
          python3 -m twine upload dist/* --verbose
        env:
          TWINE_USERNAME: __token__
          TWINE_PASSWORD: ${{ secrets.TWINE_TOKEN }}