1  name: Python package
 2  
 3  on:
 4    push:
 5      branches: 
 6        - main
 7        - dev
 8    pull_request:
 9      branches: 
10        - main
11        - dev
12  
13  jobs:
14    linting:
15      runs-on: ubuntu-latest
16      steps:
17      # Checkout repo and setup python
18      - uses: actions/checkout@v2
19      - uses: actions/setup-python@v2
20      # load pip cache if cache exists
21      - uses: actions/cache@v2
22        with:
23          path: ~/.cache/pip
24          key: ${{ runner.os }}-pip
25          restore-keys: ${{ runner.os }}-pip
26      # install linters
27      - name: Setup linters
28        run: python -m pip install black flake8 mypy
29      # run linters
30      - name: Lint
31        run: |
32          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
33          flake8 . --count --exit-zero --max-complexity=5 --max-line-length=88 --ignore=E203 --statistics
34          black . --check
35          mypy .
36    build-and-test:
37      needs: linting
38      strategy:
39        fail-fast: true
40        matrix:
41          os: ["ubuntu-latest"]
42          python-version: [3.7, 3.8, 3.9]
43      runs-on: ${{ matrix.os }}
44      steps:
45      # Checkout repo and setup python
46      - uses: actions/checkout@v2
47      - uses: actions/setup-python@v2
48        with:
49          python-version: ${{ matrix.python-version }}
50      # Install and configure poetry
51      - name: Install Poetry
52        uses: snok/install-poetry@v1.1.1
53        with:
54          virtualenvs-create: true
55          virtualenvs-in-project: true
56      # Load cached venv if cache exists
57      - name: Load cached venv (poetry)
58        id: cached-poetry-dependencies
59        uses: actions/cache@v2
60        with:
61          path: .venv
62          key: venv-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
63      # install dependencies if cache does not exist
64      - name: Install dependencies
65        run: poetry install
66        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'