python 3 compatibility

common/djangoapps/third_party_auth/__init__.py

@@ -1,7 +1,8 @@
 """Third party authentication. """
 
-from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
+from __future__ import absolute_import
 
+from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 
 default_app_config = 'third_party_auth.apps.ThirdPartyAuthConfig'
 

common/djangoapps/third_party_auth/admin.py

@@ -2,13 +2,16 @@
 """
 Admin site configuration for third party authentication
 """
+from __future__ import absolute_import
+
 from config_models.admin import KeyedConfigurationModelAdmin
 from django import forms
 from django.contrib import admin
-from django.urls import reverse
 from django.db import DatabaseError, transaction
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 
+from openedx.core.djangolib.markup import HTML
 from third_party_auth.provider import Registry
 
 from .models import (
@@ -22,7 +25,6 @@ from .models import (
     SAMLProviderData
 )
 from .tasks import fetch_saml_metadata
-from openedx.core.djangolib.markup import HTML
 
 
 class OAuth2ProviderConfigForm(forms.ModelForm):

common/djangoapps/third_party_auth/apps.py

@@ -1,4 +1,6 @@
 
+from __future__ import absolute_import
+
 from django.apps import AppConfig
 from django.conf import settings
 

common/djangoapps/third_party_auth/dummy.py

@@ -1,6 +1,8 @@
 """
 DummyBackend: A fake Third Party Auth provider for testing & development purposes.
 """
+from __future__ import absolute_import
+
 from social_core.backends.oauth import BaseOAuth2
 from social_core.exceptions import AuthFailed
 

common/djangoapps/third_party_auth/exceptions.py

@@ -1,6 +1,8 @@
 """
 Exceptions for SAML Authentication.
 """
+from __future__ import absolute_import
+
 from social_core.exceptions import AuthException
 
 

common/djangoapps/third_party_auth/middleware.py

@@ -1,7 +1,8 @@
 """Middleware classes for third_party_auth."""
 
-import urlparse
+from __future__ import absolute_import
 
+import six.moves.urllib.parse  # pylint: disable=import-error
 from django.contrib import messages
 from django.shortcuts import redirect
 from django.urls import reverse
@@ -39,7 +40,7 @@ class ExceptionMiddleware(SocialAuthExceptionMiddleware):
         referer_url = request.META.get('HTTP_REFERER', '')
         if (referer_url and isinstance(exception, HTTPError) and
                 exception.response.status_code == 502):
-            referer_url = urlparse.urlparse(referer_url).path
+            referer_url = six.moves.urllib.parse.urlparse(referer_url).path
             if referer_url == reverse('signin_user'):
                 messages.error(request, _('Unable to connect with the external provider, please try again'),
                                extra_tags='social-auth')

common/djangoapps/third_party_auth/settings.py

@@ -10,6 +10,8 @@ If true, it:
     b) calls apply_settings(), passing in the Django settings
 """
 
+from __future__ import absolute_import
+
 from openedx.features.enterprise_support.api import insert_enterprise_pipeline_elements
 
 

common/djangoapps/third_party_auth/tasks.py

@@ -3,6 +3,8 @@
 Code to manage fetching and storing the metadata of IdPs.
 """
 
+from __future__ import absolute_import
+
 import datetime
 import logging
 
@@ -16,8 +18,8 @@ from onelogin.saml2.utils import OneLogin_Saml2_Utils
 from requests import exceptions
 from six import text_type
 
-from third_party_auth.models import SAMLConfiguration, SAMLProviderConfig, SAMLProviderData
 from openedx.core.djangolib.markup import Text
+from third_party_auth.models import SAMLConfiguration, SAMLProviderConfig, SAMLProviderData
 
 log = logging.getLogger(__name__)
 

common/djangoapps/third_party_auth/urls.py

@@ -1,9 +1,16 @@
 """Url configuration for the auth module."""
 
+from __future__ import absolute_import
+
 from django.conf.urls import include, url
 
-from .views import (inactive_user_view, lti_login_and_complete_view,
-                    post_to_custom_auth_form, saml_metadata_view, IdPRedirectView)
+from .views import (
+    IdPRedirectView,
+    inactive_user_view,
+    lti_login_and_complete_view,
+    post_to_custom_auth_form,
+    saml_metadata_view
+)
 
 urlpatterns = [
     url(r'^auth/inactive', inactive_user_view, name="third_party_inactive_redirect"),

common/djangoapps/third_party_auth/utils.py

@@ -2,6 +2,8 @@
 Utility functions for third_party_auth
 """
 
+from __future__ import absolute_import
+
 from django.contrib.auth.models import User