python3: encoding variations in auth_fc.utils

src/authentic2_auth_fc/utils.py

@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import urllib
 import logging
 import os
 import json
@@ -28,6 +27,7 @@ from requests.packages.urllib3.util.retry import Retry
 from django.core.urlresolvers import reverse
 from django.conf import settings
 from django.shortcuts import resolve_url
+from django.utils.http import urlencode
 from django.utils.translation import ugettext_lazy as _
 
 from . import app_settings
@@ -54,7 +54,7 @@ def build_logout_url(request, next_url=None):
             'post_logout_redirect_uri': callback,
             'state': state,
         }
-        return app_settings.logout_url + '?' + urllib.urlencode(qs)
+        return app_settings.logout_url + '?' + urlencode(qs)
     return None