Fix Pylint warnings #530

	name: Unit test

	on: [push]

	env:
	QIWIS_VERSION: v3.0.1

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11"]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	sudo apt-get update
	python -m pip install --upgrade pip
	pip install coverage
	- name: Add dependencies about external libraries
	run: \|
	pip install h5py
	pip install pyqt5
	pip install requests
	pip install numpy
	pip install pyqtgraph
	sudo apt-get install python3-pyqt5
	pip install git+https://github.com/snu-quiqcl/qiwis.git@${{ env.QIWIS_VERSION }}
	- name: Run the unit tests and check coverage
	run: \|
	xvfb-run `which coverage` run --source=iquip/ -m unittest discover -b
	xvfb-run `which coverage` report

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