Fix initialization of date filter #2717

	name: Linter

	on: [push, pull_request]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	max-parallel: 4

	steps:
	- uses: actions/checkout@v1
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: 3.9
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	pip install -r requirements-tools.txt
	- name: Lint with pylint
	run: \|
	find collectives tests -name "*.py" -type f -print0 \| xargs -0 pylint config.py

	- name: Format with black
	run: \|
	black --check *.py collectives migrations tests

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