UPD: first little 2to3 migration steps.

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: