Make next Python 2/3 consistent (test_db.py)
@@ -6,7 +6,7 @@ from __future__ import division
from builtins import str, bytes, int
from builtins import map, zip, filter
-from builtins import object, range
+from builtins import object, range, next
import os, sys; sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
import datetime
