Flake8 Linting #1489

	name: Flake8 Linting

	on:
	push:
	branches:
	- "main"
	pull_request:
	branches:
	- "main"
	schedule:
	# Nightly tests run on master by default:
	# Scheduled workflows run on the latest commit on the default or base branch.
	# (from https://help.github.com/en/actions/reference/events-that-trigger-workflows#scheduled-events-schedule)
	- cron: "0 0 * * *"


	jobs:
	lint:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: [3.9]
	torch-version: ['torch>=1.9']

	steps:

	# WITHOUT OPENMM
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest "${{ matrix.torch-version }}" numpy nflows torchdiffeq
	- 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

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