Update tests to Python 3.9

This change updates our tests to run against Python 3.9.

.github/workflows/test.yml

@@ -13,16 +13,16 @@ jobs:
  - name: Set up Python
  uses: actions/setup-python@v1
  with:
- python-version: 3.8
+ python-version: 3.9
 
  - name: Install dependencies
  run: |
  python -m pip install --upgrade pip
  pip install tox
- 
+
  - name: Run tox -e lint
  run: tox
- env: 
+ env:
  TOXENV: lint
 
  test:
@@ -33,24 +33,18 @@ jobs:
  matrix:
  toxenv:
  - py36-dj22-wag27
- - py36-dj22-waglatest
- - py36-dj31-waglatest
- - py38-dj22-wag27
- - py38-dj22-waglatest
- - py38-dj31-waglatest
+ - py36-dj32-waglatest
+ - py39-dj22-waglatest
+ - py39-dj32-waglatest
  include:
  - toxenv: py36-dj22-wag27
  python-version: 3.6
  - toxenv: py36-dj22-waglatest
  python-version: 3.6
- - toxenv: py36-dj31-waglatest
- python-version: 3.6
- - toxenv: py38-dj22-wag27
- python-version: 3.8
- - toxenv: py38-dj22-waglatest
- python-version: 3.8
- - toxenv: py38-dj31-waglatest
- python-version: 3.8
+ - toxenv: py39-dj22-waglatest
+ python-version: 3.9
+ - toxenv: py39-dj32-waglatest
+ python-version: 3.9
 
  steps:
  - uses: actions/checkout@v1
@@ -69,6 +63,6 @@ jobs:
  run: |
  tox
  coveralls
- env: 
+ env:
  TOXENV: ${{ matrix.toxenv }}
  COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}

tox.ini

@@ -2,7 +2,8 @@
 skipsdist=True
 envlist=
  lint,
- py{36,38}-dj{22,31}-wag{27,latest}
+ py{36}-dj{22,32}-wag{27,latest}
+ py{39}-dj{22,32}-wag{latest}
 
 [testenv]
 install_command=pip install -e ".[testing]" -U {opts} {packages}
@@ -15,16 +16,16 @@ setenv=
 
 basepython=
  py36: python3.6
- py38: python3.8
+ py39: python3.9
 
 deps=
  dj22: Django>=2.2,<2.3
- dj31: Django>=3.1,<3.2
+ dj31: Django>=3.2,<4.0
  wag27: wagtail>=2.7,<2.8
  waglatest: wagtail<3
 
 [testenv:lint]
-basepython=python3.6
+basepython=python3.9
 deps=
  black
  flake8

wagtailflags/views.py

@@ -45,7 +45,7 @@ def create_flag(request):
 
 
 def delete_flag(request, name):
- """ Delete a database flag. """
+ """Delete a database flag."""
  flag = get_flags().get(name)
 
  if not flag: