Question concering XML

swepubxmlparser.py

"""
Data structure: http://libris.kb.se/xsearch?d=swepub&hitlist&q=l%C3%A4ros%C3%A4te%3agu&f=ext&spell=true&hist=true&n=200&p=1
Trying to access only the value after "code="u">" in:
<datafield tag="700" ind1="1" ind2=" ">
 <subfield code="a">Alvestad, Torgeir,</subfield>
 <subfield code="d">1960-,</subfield>
 <subfield code="u">Göteborgs universitet, Institutionen för pedagogik och didaktik, University of Gothenburg, Department of Education</subfield>
 <subfield code="4">edt</subfield>
 <subfield code="0">(SwePub:chalmers.se)xalvto</subfield>
</datafield>
How?
"""

from os import listdir
from lxml import etree as ET


for filename in listdir("GU20151228/"): #loads a large ammount of xml-files as above link
    with open("GU20151228/" + filename) as currentFile:
        tree = ET.parse(currentFile)
        root = tree.getroot()

        for child in root[0]:
            for c in child:
                for value in c:
                    print(value.text)