Merge pull request #299 from jupyter/dependabot/pip/flake8-lt-7 #667

	# 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: Linters

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	workflow_dispatch:
	inputs:
	name:
	description: 'Reason'
	required: false
	default: 'Just Cause'

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [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 }}
	cache: 'pip'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements-dev.txt
	flit install --symlink
	- name: dependency tree
	run: \|
	pipdeptree
	- name: dependency tree (reversed)
	run: \|
	pipdeptree -r
	- name: Lint with black
	run: \|
	black --check papyri
	- name: Lint with flake8
	if: always()
	run: \|
	flake8 papyri
	- name: Test with mypy
	if: always()
	run: \|
	python3 -m pip install types-requests types-cachetools types-toml
	mypy papyri

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