Add support and testing for Django 3.1

.travis.yml

@@ -23,6 +23,12 @@ matrix:
       env: TOXENV=py37-django30
     - python: 3.8
       env: TOXENV=py38-django30
+    - python: 3.6
+      env: TOXENV=py36-django31
+    - python: 3.7
+      env: TOXENV=py37-django31
+    - python: 3.8
+      env: TOXENV=py38-django31
     - python: 3.6
       env: TOXENV=py36-djangomaster
     - python: 3.7

CHANGELOG.rst

@@ -4,6 +4,8 @@ django-storages CHANGELOG
 UNRELEASED
 **********
 
+- Add support for Django 3.1.
+
 **Breaking**
 
 - Removed support for end-of-life Python 2.7 and 3.4.

docs/conf.py

@@ -9,7 +9,8 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys, os
+import os
+import sys
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the

setup.cfg

@@ -13,6 +13,7 @@ classifiers =
     Framework :: Django
     Framework :: Django :: 2.2
     Framework :: Django :: 3.0
+    Framework :: Django :: 3.1
     Intended Audience :: Developers
     License :: OSI Approved :: BSD License
     Operating System :: OS Independent
@@ -60,4 +61,3 @@ include_trailing_comma = true
 known_first_party = storages
 line_length = 79
 multi_line_output = 5
-not_skip = __init__.py

storages/backends/gcloud.py

@@ -15,9 +15,9 @@
 )
 
 try:
+    from google.cloud.exceptions import NotFound
     from google.cloud.storage import Blob, Client
     from google.cloud.storage.blob import _quote
-    from google.cloud.exceptions import NotFound
 except ImportError:
     raise ImproperlyConfigured("Could not load Google Cloud Storage bindings.\n"
                                "See https://github.com/GoogleCloudPlatform/gcloud-python")

storages/backends/s3boto3.py

@@ -36,7 +36,7 @@ def _use_cryptography_signer():
     from cryptography.hazmat.primitives import hashes
     from cryptography.hazmat.primitives.asymmetric import padding
     from cryptography.hazmat.primitives.serialization import (
-        load_pem_private_key
+        load_pem_private_key,
     )
 
     def _cloud_front_signer_from_pem(key_id, pem):

tests/integration/test_azure.py

@@ -6,9 +6,9 @@
 from django.template import Context, Template
 from django.test import TestCase, override_settings
 from django.utils import timezone
-from tests.integration.models import SimpleFileModel
 
 from storages.backends import azure_storage
+from tests.integration.models import SimpleFileModel
 
 
 class AzureStorageTest(TestCase):

tox.ini

@@ -3,6 +3,7 @@ minversion = 1.9
 envlist =
 	py{35,36,37,38}-django22
 	py{36,37,38}-django30
+	py{36,37,38}-django31
 	py{36,37,38}-djangomaster
 	integration
 	flake8
@@ -16,6 +17,7 @@ commands = pytest --cov=storages --ignore=tests/integration/ tests/ {posargs}
 deps =
 	django22: Django>=2.2,<3.0
 	django30: Django>=3.0,<3.1
+	django31: Django>=3.1,<3.2
 	djangomaster: https://github.com/django/django/archive/master.tar.gz
 	cryptography
 	pytest
@@ -50,8 +52,8 @@ extras =
 [testenv:flake8]
 deps =
 	flake8
-	isort
+	isort>=5.0.0
 commands =
 	flake8
-	isort --recursive --check-only --diff storages/ tests/
+	isort --check-only --diff .
 skip_install = true