# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

name: Python package

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:

    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ['2.7', '3.5', '3.6', '3.7', '3.8', '3.9']

    steps:
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        python -m pip install -r requirements-dev.txt
    - name: tox
      run: |
        tox -e `python -c "import sys; print('py' + ''.join(sys.version.split('.')[:2]))"`

# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

name: Python package

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:

    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ['2.7', '3.5', '3.6', '3.7', '3.8', '3.9']

    steps:
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        python -m pip install -r requirements-dev.txt
    - name: tox
      run: |
        tox -e py

Remove an ugly way to pass python version to tox
Remove an ugly way to pass python version to tox

https://tox.readthedocs.io/en/latest/example/basic.html#a-simple-tox-ini-default-environments
thanks for suggestion @kmike
