XML : Python: How can I use lxml objectify's iterchildren to get details of siblings which are in a different namespace

This is my xml file.

get_subscribers_result.xml

      <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">      <SOAP-ENV:Header/>      <SOAP-ENV:Body>      <ns3:GetSubscriberResponse xmlns:ns3="http://example.com/123/ss/subscribermgmt/v1_0" xmlns:ns2="http://example.com/123/ss/base/v1_0" xmlns:ns4="http://example.com/123/ss/xyz/v1_0" >      <ns3:subscriber>      <ns2:created>2015-10-20T16:02:58.831Z</ns2:created>      <ns2:createdBy>admin</ns2:createdBy>      <ns2:lastModified>2015-10-20T16:02:58.824Z</ns2:lastModified>      <ns2:lastModifiedBy>super</ns2:lastModifiedBy>      <ns2:subscriberDetail>      <ns2:key>address</ns2:key>      <ns2:value>1st vivekanandar street</ns2:value>      </ns2:subscriberDetail>      <ns2:subscriberDetail>      <ns2:key>state</ns2:key>      <ns2:value>Abu Dhabi</ns2:value>      </ns2:subscriberDetail>      </ns3:subscriber>      </ns3:GetSubscriberResponse>      </SOAP-ENV:Body>      </SOAP-ENV:Envelope>    

Now, I have seen an example from http://davekuhlman.org/Objectify_files/weather_test.py where iterchildren is used.

The code works if there are no namespaces. This code below would have worked for the xml i have , provided i did not have namespaces in my xml.

      obj2 = lxml.objectify.parse("get_subscribers_result.xml")      root = obj2.getroot()        tag = '{http://example.com/123/ss/base/v1_0}subscriberDetail'        for subscriberDetail in enumerate(root.subscriber.iterchildren(tag=tag)):                     print subscriberDetail.key                     print subscriberDetail.value                     print "*********************************"    

If i run this, i get

AttributeError: no such child: {http://schemas.xmlsoap.org/soap/envelope/}subscriber

That's because subscriber doesn't belong to the default namespace and it is correct !

I tried

      for subscriberDetail in enumerate(root.{http://example.com/123/ss/subscribermgmt/v1_0}subscriber.iterchildren(tag=tag)):    

Any ideas how to make this work when namespaces are present ?