add missing imports

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16369 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/patches/DA.py

@@ -24,7 +24,8 @@ from App.Extensions import getBrain
 from AccessControl import getSecurityManager
 from Acquisition import aq_base
 from zLOG import LOG, INFO, ERROR
-
+from string import find
+from cStringIO import StringIO
 
 def DA_fromFile(self, filename):
   """