multilevel data frames #21

	---
	on: # yamllint disable-line rule:truthy
	push:
	branches:
	- master
	- tests
	pull_request:
	workflow_dispatch:

	env:
	POETRY_VERSION: 1.7.1

	jobs:

	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version:
	- '3.9'
	- '3.10'
	- '3.11'

	steps:
	- name: Checkout the repository
	uses: actions/checkout@v4

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Load the cached Poetry installation
	id: cached-poetry
	uses: actions/cache@v4
	with:
	path: ~/.local
	key: poetry-${{ env.POETRY_VERSION }}-0

	- name: Install Poetry
	if: steps.cached-poetry.outputs.cache-hit != 'true'
	uses: snok/install-poetry@v1
	with:
	version: ${{ env.POETRY_VERSION }}
	virtualenvs-create: true
	virtualenvs-in-project: true

	- name: Load the cached dependencies
	id: cached-deps
	uses: actions/cache@v4
	with:
	path: .venv
	key: py${{ matrix.python-version }}-deps-${{ hashFiles('**/poetry.lock') }}

	- name: Install dependencies
	if: steps.cache-deps.outputs.cache-hit != 'true'
	run: poetry install --no-interaction --no-root

	- name: Perform package installation
	run: poetry install --no-interaction

	- name: Run tests
	run: poetry run pytest

Provide feedback