New util function: characteristic_roots #281

	on:
	pull_request:
	release:
	types:
	- published

	name: Build

	jobs:
	python-build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- uses: actions/setup-python@v4
	name: Install Python
	with:
	python-version: '3.10'

	- name: Install build dependencies
	run: python -m pip install build

	- name: Build source distribution and wheel
	run: python -m build --sdist --wheel

	- uses: actions/upload-artifact@v3
	with:
	name: wheels
	path: dist/*

	upload-testpypi:
	needs: [python-build]
	runs-on: ubuntu-latest
	if: github.event_name == 'release' && github.event.action == 'published'
	environment:
	name: test_release
	url: https://test.pypi.org/p/ivmodels
	permissions:
	id-token: write

	steps:
	- uses: actions/download-artifact@v3
	with:
	name: wheels
	path: dist

	- uses: pypa/gh-action-pypi-publish@release/v1
	with:
	repository-url: https://test.pypi.org/legacy/


	upload-pypi:
	needs: [python-build, upload-testpypi]
	runs-on: ubuntu-latest
	if: github.event_name == 'release' && github.event.action == 'published'
	environment:
	name: release
	url: https://pypi.org/p/ivmodels
	permissions:
	id-token: write

	steps:
	- uses: actions/download-artifact@v3
	with:
	name: wheels
	path: dist

	- uses: pypa/gh-action-pypi-publish@release/v1

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