ci: lint Python files

.github/workflows/lint.yml

@@ -9,6 +9,20 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install Poetry
+        run: |
+          curl -fsS -o get-poetry.py https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py
+          python get-poetry.py -y
+          echo "$HOME/.poetry/bin" >> $GITHUB_PATH
+
+      - name: Install dependencies
+        run: poetry install --no-interaction
+
       - name: Lint Cpp source
         run: |
           sudo apt-get -y install clang-format
@@ -19,6 +33,9 @@ jobs:
           sudo apt-get -y install scour
           make lint-svg
 
+      - name: Lint Python files
+        run: poetry run make lint-python
+
       - name: Lint shell scripts
         run: |
           sudo apt-get -y install shellcheck

Makefile

@@ -5,8 +5,8 @@ git-hooks: .git/hooks/pre-commit
 	install --mode=700 $< $@
 
 .PHONY: lint
-lint: lint-c lint-shell lint-svg
+lint: lint-c lint-python lint-shell lint-svg
 
-.PHONY: lint-c lint-shell lint-svg
-lint-c lint-shell lint-svg:
+.PHONY: lint-c lint-python lint-shell lint-svg
+lint-c lint-python lint-shell lint-svg:
 	./$@.sh

lint-python.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -o errexit -o noclobber -o nounset
+
+directory="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+git ls-files -z -- "${directory}/**.py" | xargs --no-run-if-empty --null flake8
+git ls-files -z -- "${directory}/**.py" | xargs --no-run-if-empty --null black --check
+git ls-files -z -- "${directory}/**.py" | xargs --no-run-if-empty --null isort --check-only

pyproject.toml

@@ -13,6 +13,9 @@ sphinx-rtd-theme = "^0.5.2"
 
 [tool.poetry.dev-dependencies]
 platformio = "^5.1.1"
+black = "^21.6b0"
+flake8 = "^3.9.2"
+isort = "^5.8.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]

setup.cfg

@@ -0,0 +1,4 @@
+[flake8]
+doctests = true
+max-complexity = 6
+max-line-length = 88