fix label of root node #78

	name: Python package

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.7, 3.8, 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 }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest pytest-cov numpy
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	# - name: Lint with flake8
	# run: \|
	# # stop the build if there are Python syntax errors or undefined names
	# flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	# flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	# Turned off linting 2022-08-26 --AJZ. It didn't like Jupyter display() and I didn't want to install dependency.
	- name: Test with pytest
	run: \|
	pytest -v --cov

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