remove imported but unsed module #410

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions

	name: develop

	on:
	push:
	branches: [ develop ]
	pull_request:
	branches: [ develop ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: [3.7, 3.8, 3.9, '3.10', '3.11', '3.12', pypy-3.8, pypy-3.9, pypy-3.10]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools
	pip install flake8
	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
	- name: Test with unittest
	run: \|
	make test

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