mypy

gh-128770: raise warnings as errors in test suite - except for test_socket which still logs warnings, and internal test warnings that are now logged #11898

	# Workflow to run mypy on select parts of the CPython repo
	name: mypy

	on:
	push:
	branches:
	- main
	pull_request:
	paths:
	- ".github/workflows/mypy.yml"
	- "Lib/_pyrepl/**"
	- "Lib/test/libregrtest/**"
	- "Tools/build/generate_sbom.py"
	- "Tools/cases_generator/**"
	- "Tools/clinic/**"
	- "Tools/jit/**"
	- "Tools/peg_generator/**"
	- "Tools/requirements-dev.txt"
	- "Tools/wasm/**"
	workflow_dispatch:

	permissions:
	contents: read

	env:
	PIP_DISABLE_PIP_VERSION_CHECK: 1
	FORCE_COLOR: 1
	TERM: xterm-256color # needed for FORCE_COLOR to work on mypy on Ubuntu, see https://github.com/python/mypy/issues/13817

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	mypy:
	strategy:
	fail-fast: false
	matrix:
	target: [
	"Lib/_pyrepl",
	"Lib/test/libregrtest",
	"Tools/build",
	"Tools/cases_generator",
	"Tools/clinic",
	"Tools/jit",
	"Tools/peg_generator",
	"Tools/wasm",
	]
	name: Run mypy on ${{ matrix.target }}
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v4
	with:
	persist-credentials: false
	- uses: actions/setup-python@v5
	with:
	python-version: "3.13"
	cache: pip
	cache-dependency-path: Tools/requirements-dev.txt
	- run: pip install -r Tools/requirements-dev.txt
	- run: mypy --config-file ${{ matrix.target }}/mypy.ini

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