fix conversion error when a boolean feature has only one value #82

	name: Publish Python package

	on: [push]

	jobs:
	publish:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: "3.10"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install twine build
	pip install -r requirements.txt
	- name: Publish on Pypi
	if: startsWith(github.ref, 'refs/tags/')
	env:
	TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
	TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
	run: \|
	python3 -m build
	twine upload dist/*.tar.gz

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