[MRG] Use list comprehension #247

	name: pull-request-linter

	on:
	pull_request:
	branches: [ master ]

	jobs:

	linter:
	runs-on: ${{ matrix.os }}
	timeout-minutes: 30
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest]
	python-version: ['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: Get file diff
	id: diff-files
	uses: markgilbert-git/[email protected]

	with:
	output: '\n'
	fileOutput: '\n'
	- name: Get Python file diff
	id: pydiff
	run: >
	echo "pyfiles=$(echo -e
	'${{ steps.diff-files.outputs.files_added }}\n${{ steps.diff-files.outputs.files_modified }}'
	\| grep '\.py' \| tr '\n' ' '
	)" >> $GITHUB_OUTPUT
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 black codespell
	- name: Check code formatting
	run: black . --check
	- name: Check spelling
	run: codespell -L halp,ot,pres,requestor,requestors -d pynetdicom
	- name: Check for syntax errors
	run: python -m flake8 --select=E901,E999,F822,F823 ${{ steps.pydiff.outputs.pyfiles }} --ignore F821
	- name: Check for style warnings
	run: python -m flake8 --exit-zero ${{ steps.pydiff.outputs.pyfiles }}

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