Fix flake8 errors #3

	name: python-test

	on:
	push:
	branches:
	- master

	env:
	USE_SYSTEM_PYTHON: 3

	jobs:
	test:
	runs-on: ubuntu-latest

	steps:
	- name: checkout
	uses: actions/checkout@v1
	with:
	fetch-depth: 1

	- name: setup python 3.11
	uses: actions/setup-python@v1
	with:
	python-version: 3.11

	- name: pip caching
	uses: actions/cache@v1
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('requirements.*.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install dependencies
	if: steps.cache.outputs.cache-hit != 'true'
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r requirements.txt

	- name: Test
	run: \|
	./black.sh
	./flake8.sh
	./isort.sh
	./mypy.sh
	./pytest.sh

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