feat: python v4 #153

	# This is a basic workflow to help you get started with Actions

	name: CI

	# Controls when the action will run.
	on: [push]

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	format:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- name: Checkout
	uses: actions/checkout@v2
	with:
	persist-credentials: false

	- name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.9

	- name: Setup Poetry
	uses: Gr1N/setup-poetry@v4

	- name: Cache Dependencies
	uses: actions/cache@v2
	with:
	path: ~/.cache/pypoetry/virtualenvs
	key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
	restore-keys: \|
	${{ runner.os }}-poetry-

	- run: poetry install
	- name: Code style
	run: \|
	make format

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