Python ElementTree Namespaces

Env: Python 2.7 Windows 8.1

Sample XML:

<?xml version="1.0" encoding="UTF-8"?>
<edmx:Edmx xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx" Version="1.0">
    <edmx:DataServices xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" m:MaxDataServiceVersion="3.0" m:DataServiceVersion="3.0">
        <Schema xmlns="http://ift.tt/1cMNgQg" Namespace="DataModel">
            <EntityContainer Name="EC1" xmlns:p6="http://ift.tt/1hzy3ZA" p6:LazyLoadingEnabled="true" m:IsDefaultEntityContainer="true">
                <EntitySet Name="Attributes" EntityType="Model.Attribute"/>
                <EntitySet Name="AttributeControlTypes" EntityType="Model.AttributeControlType"/>
            </EntityContainer>
        </Schema>
    </edmx:DataServices>
</edmx:Edmx>

test code:

import xml.etree.ElementTree as ET
from cStringIO import StringIO

def parse(self):
    events = ("end", "start-ns", "end-ns", "start")
    namespaces = []
    for event, elem in ET.iterparse(StringIO(self.document), events=events):
        if event == "start-ns":
            print "startns: {}".format(elem)
            namespaces.append(elem)
        elif event == "end-ns":
            removed = namespaces.pop()
            print "removedns: {}".format(removed)
        elif event == "start":
            print elem.tag

My understanding is if a tag has a namespace attached to it then all the child elements should also be in the same namespace. When I try to parse the above XML I would have expected the "entitySet" elements to be in the namespace defined in "EntityContainer":

output:

startns: (u'edmx', 'http://ift.tt/1cMNdUC')
{http://ift.tt/1u8iUlx
startns: (u'm', 'http://ift.tt/1dtZymv')
{http://ift.tt/1u8iUC2
startns: ('', 'http://ift.tt/1cMNgQg')
{http://ift.tt/1u8iThi
startns: (u'p6', 'http://ift.tt/1hzy3ZA')
{http://ift.tt/1meEyW6
{http://ift.tt/1meEypi
{http://ift.tt/1meEypi
removedns: (u'p6', 'http://ift.tt/1hzy3ZA')
removedns: ('', 'http://ift.tt/1cMNgQg')
removedns: (u'm', 'http://ift.tt/1dtZymv')
removedns: (u'edmx', 'http://ift.tt/1cMNdUC')

ElementTree sees the start of the namespace(p6) but seems to add the "EntityContainer" child elements into the namespace of the "Schema" element. Is this working as expected?