--- a/dataimport.py	Thu Mar 12 14:21:36 2015 +0100
+++ b/dataimport.py	Wed Mar 18 14:41:47 2015 +0100
@@ -69,6 +69,7 @@
 import cPickle
 import os.path as osp
 import inspect
+from base64 import b64encode
 from collections import defaultdict
 from copy import copy
 from datetime import date, datetime, time