UPD: first little 2to3 migration steps.

dav_base/console_scripts/admin.py

@@ -96,17 +96,17 @@ class AdminCommand(object):
 
         input_file = os.path.join('django_project_config', 'additional_settings.py')
         output_file = os.path.join(django_base_dir, django_main_module, 'settings.py')
-        with open(output_file, 'a') as f:
+        with open(output_file, 'ab') as f:
             f.write(pkg_resources.resource_string(__package__, input_file))
 
         input_file = os.path.join('django_project_config', 'urls.py')
         output_file = os.path.join(django_base_dir, django_main_module, 'urls.py')
-        with open(output_file, 'w') as f:
+        with open(output_file, 'wb') as f:
             f.write(pkg_resources.resource_string(__package__, input_file))
 
         input_file = os.path.join('django_project_config', 'settings-dav_base.py')
         output_file = os.path.join(django_base_dir, django_main_module, 'settings-dav_base.py')
-        with open(output_file, 'w') as f:
+        with open(output_file, 'wb') as f:
             f.write(pkg_resources.resource_string(__package__, input_file))
 
         return posix.EX_OK

dav_base/management/commands/enable_module.py

@@ -27,7 +27,7 @@ class Command(BaseCommand):
         if pkg_resources.resource_exists(module_name, input_file):
             output_file = os.path.join(django_base_dir, django_main_module, settings_file_name)
             if not os.path.exists(output_file):
-                with open(output_file, 'w') as f:
+                with open(output_file, 'wb') as f:
                     f.write(pkg_resources.resource_string(module_name, input_file))
 
         module_meta_obj = ModuleMeta(module_name)

dav_base/tests/generic.py

@@ -281,7 +281,7 @@ class ScreenshotTestCase(SeleniumTestCase):
         )
         path = os.path.join(self.screenshot_path, self.sanitize_filename(base_name))
         if not os.path.isdir(self.screenshot_path):
-            os.makedirs(self.screenshot_path, 0700)
+            os.makedirs(self.screenshot_path, 0o700)
 
         restore_size = False
         if resize:

dav_events/forms/events.py

@@ -737,7 +737,7 @@ class RegistrationForm(EventCreateForm):
         elif field_name == 'deadline_month':
             first_day = self._session_data.get('first_day')
             m = first_day.month - 1 - 1
-            y = first_day.year + m / 12
+            y = first_day.year + m // 12
             m = m % 12 + 1
             d = min(first_day.day, calendar.monthrange(y, m)[1])
             date = datetime.date(y, m, d)
@@ -745,7 +745,7 @@ class RegistrationForm(EventCreateForm):
         elif field_name == 'deadline_quarter':
             first_day = self._session_data.get('first_day')
             m = first_day.month - 1 - 3
-            y = first_day.year + m / 12
+            y = first_day.year + m // 12
             m = m % 12 + 1
             d = min(first_day.day, calendar.monthrange(y, m)[1])
             date = datetime.date(y, m, d)

dav_registration/views.py

@@ -183,6 +183,6 @@ class RegistrationSuccessView(generic.DetailView):
         try:
             pk = self.request.session['registration_id']
             obj = self.model.objects.get(pk=pk)
-        except KeyError, self.model.DoesNotExist:
+        except (KeyError, self.model.DoesNotExist):
             obj = None
         return obj