#!/usr/bin/env python
import re
import sys
import xml.etree.cElementTree as etree
 
def getelements(source, tag):
    context = iter(etree.iterparse(source, events=('start', 'end')))
    _, root = next(context) # get root element
    for event, elem in context:
        if event == 'end' and elem.tag == tag:
            yield elem
            root.clear() # free memory
 
for elem in getelements(sys.stdin, 'person'):
    print '^'.join(re.sub(r'\s+', ' ', elem.find(tag).text).strip() for tag in 'name age address'.split())

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

<data>
  <person>
        <name>Tom</name>
        <age>18</age>
        <address> London, xxx street, xxx building</address>
  </person>
  <person>
        <name>John</name>
        <age>22</age>
        <address> Canberra, xxx street, xxx building, xxx floor, xxx room,
                 xxx  bed</address>
  </person>
</data>