INCR-208: run python-modernize and isort (#20434)

* INCR-208: run python-modernize and isort

This change supports python2 -> python3 transition.

* INCR-208:  combine import statements for cleaner look.

* INCR-208: combine import from __future__ statements for cleaner look.

openedx/core/djangoapps/oauth_dispatch/adapters/dop.py

@@ -2,6 +2,7 @@
 Adapter to isolate django-oauth2-provider dependencies
 """
 
+from __future__ import absolute_import
 from provider.oauth2 import models
 from provider import constants, scope
 

openedx/core/djangoapps/oauth_dispatch/adapters/dot.py

@@ -2,6 +2,7 @@
 Adapter to isolate django-oauth-toolkit dependencies
 """
 
+from __future__ import absolute_import
 from oauth2_provider import models
 
 from openedx.core.djangoapps.oauth_dispatch.models import RestrictedApplication

openedx/core/djangoapps/oauth_dispatch/dot_overrides/backends.py

@@ -1,6 +1,7 @@
 """
 Custom authentication backends.
 """
+from __future__ import absolute_import
 from django.contrib.auth.backends import AllowAllUsersModelBackend as UserModelBackend
 from ratelimitbackend.backends import RateLimitMixin
 

openedx/core/djangoapps/oauth_dispatch/dot_overrides/validators.py

@@ -1,8 +1,7 @@
 """
 Classes that override default django-oauth-toolkit behavior
 """
-from __future__ import unicode_literals
-
+from __future__ import unicode_literals, absolute_import
 from datetime import datetime, timedelta
 
 from django.contrib.auth import authenticate, get_user_model

openedx/core/djangoapps/oauth_dispatch/dot_overrides/views.py

@@ -1,8 +1,7 @@
 """
 Classes that override default django-oauth-toolkit behavior
 """
-from __future__ import unicode_literals
-
+from __future__ import unicode_literals, absolute_import
 from oauth2_provider.exceptions import OAuthToolkitError
 from oauth2_provider.http import HttpResponseUriRedirect
 from oauth2_provider.models import get_access_token_model, get_application_model

openedx/core/djangoapps/oauth_dispatch/migrations/0001_initial.py

@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
-from django.db import migrations, models
 from django.conf import settings
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

openedx/core/djangoapps/oauth_dispatch/migrations/0002_scopedapplication_scopedapplicationorganization.py

@@ -1,13 +1,13 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.13 on 2018-06-20 18:22
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
-from django.conf import settings
-from django.db import migrations, models
 import django.db.models.deletion
 import django_mysql.models
 import oauth2_provider.generators
 import oauth2_provider.validators
+from django.conf import settings
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

openedx/core/djangoapps/oauth_dispatch/migrations/0003_application_data.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.13 on 2018-06-05 13:19
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from django.conf import settings
 from django.db import migrations

openedx/core/djangoapps/oauth_dispatch/migrations/0004_auto_20180626_1349.py

@@ -1,11 +1,11 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.13 on 2018-06-26 17:49
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
-from django.conf import settings
-from django.db import migrations, models
 import django.db.models.deletion
 import django_mysql.models
+from django.conf import settings
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

openedx/core/djangoapps/oauth_dispatch/migrations/0005_applicationaccess_type.py

@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.13 on 2018-06-29 18:18
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
+import django.db.models.deletion
 from django.conf import settings
 from django.db import migrations, models
-import django.db.models.deletion
 
 
 class Migration(migrations.Migration):

openedx/core/djangoapps/oauth_dispatch/migrations/0006_drop_application_id_constraints.py

@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.14 on 2018-07-23 14:58
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
+import django.db.models.deletion
 from django.conf import settings
 from django.db import migrations, models
-import django.db.models.deletion
 
 
 class Migration(migrations.Migration):

openedx/core/djangoapps/oauth_dispatch/migrations/0007_restore_application_id_constraints.py

@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.14 on 2018-07-23 15:12
-from __future__ import unicode_literals
+from __future__ import absolute_import, unicode_literals
 
+import django.db.models.deletion
 from django.conf import settings
 from django.db import migrations, models
-import django.db.models.deletion
 
 
 class Migration(migrations.Migration):