import missing Element class, fix find expression (add namespace)

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@29550 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5SyncML/XMLSyncUtils.py

@@ -35,6 +35,7 @@ from ERP5Diff import ERP5Diff
 from zLOG import LOG, INFO
 
 from lxml import etree
+from lxml.etree import Element
 from lxml.builder import ElementMaker
 from SyncCode import SYNCML_NAMESPACE
 nsmap = {'syncml' : SYNCML_NAMESPACE}
@@ -260,7 +261,7 @@ class XMLSyncUtilsMixin(SyncCode):
                    )
                  )
                )))
-      data_store = xml.find('Item/Data/DevInf/DataStore')
+      data_store = xml.find('{%(ns)s}Item/{%(ns)s}Data/{%(ns)s}DevInf/{%(ns)s}DataStore' % {'ns': SYNCML_NAMESPACE})
       tx_element_list = []
       rx_element_list = []
       for type in conduit.getCapabilitiesCTTypeList():