Fix bug giving warning messages in term_frequencies.py #3732

	name: Lint
	on: [pull_request]

	env:
	PYTHON_VERSION: "3.12.1"

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ env.PYTHON_VERSION }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ env.PYTHON_VERSION }}

	- name: Load cached Poetry installation
	uses: actions/cache@v2
	with:
	path: ~/.local # the path depends on the OS
	key: poetry-0 # increment to reset cache
	- name: Install Poetry
	uses: snok/install-poetry@v1
	with:
	version: '1.7.0'
	virtualenvs-create: true
	virtualenvs-in-project: true
	installer-parallel: true

	- name: Load cached venv
	id: cached-poetry-dependencies
	uses: actions/cache@v2
	with:
	path: .venv
	key: venv-lint-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}-00
	- name: Install linting dependencies
	if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
	run: poetry install --no-interaction --no-root --only linting

	- name: Lint Python files with ruff
	run: \|
	source .venv/bin/activate
	ruff --show-source .

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