Tidy up function. #141

	# Runs all tests not flagged as "cern_network" with a pytest marker
	name: Tests

	defaults:
	run:
	shell: bash

	on: # Runs on all push events to any branch that isn't master
	push:
	branches-ignore:
	- 'master'

	jobs:
	tests:
	name: ${{ matrix.os }} / ${{ matrix.python-version }}
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-18.04, ubuntu-20.04, macos-latest, windows-latest]
	# Make sure to escape 3.10 with quotes so it doesn't get interpreted as float 3.1 by GA's parser
	python-version: [3.7, 3.8, 3.9, "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 }}
	cache: 'pip'
	cache-dependency-path: '**/setup.py'

	- name: Get full Python version
	id: full-python-version
	run: echo ::set-output name=version::$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))")

	- name: Upgrade pip, setuptools and wheel
	run: python -m pip install --upgrade pip setuptools wheel

	- name: Install package
	run: python -m pip install '.[test]'

	- name: Run basic tests
	run: python -m pytest -m "not cern_network"

Provide feedback