#!/usr/bin/env python

import xml.dom.minidom

XML="""<?xml version="1.0"?>

<elem xmlns="http://path/to/ns1#"
    xmlns:ns2="http://path/to/ns2#">

  <child1 attr="value1" />
  <child2 xmlns="http://path/to/ns2#" attr="value2" />
  <child3 ns2:attr="value3" />
</elem>
"""
NS1 = "http://path/to/ns1#"
NS2 = "http://path/to/ns2#"

doc = xml.dom.minidom.parseString(XML).documentElement
dgEBTN = doc.getElementsByTagName

print dgEBTN('child1')[0].attributes.itemsNS()
print dgEBTN('child2')[0].attributes.itemsNS()
print dgEBTN('child3')[0].attributes.itemsNS()

if dgEBTN('child1')[0].getAttributeNS(NS1, 'attr') == 'value1':
    print "Successfully got child1 attr value"
if dgEBTN('child2')[0].getAttributeNS(NS1, 'attr') == 'value2':
    print "Successfully got child2 attr value"
if dgEBTN('child3')[0].getAttributeNS(NS2, 'attr') == 'value3':
    print "Successfully got child3 attr value"