python function to convert the xml file generated by CppCheck into a text table

gistfile1.txt

def cppcheck2tbl(filename):
    """
    Takes the xml file generated by CppCheck
    and converts it to a text table.
    """
    import xml.etree.ElementTree as ET
    import csv
    import html
    tree = ET.parse(filename)
    root = tree.getroot()
    def errors(root):
        for err in root.findall('errors/error'):
            loc = err.find('location')
            yield [html.unescape(err.attrib[x]) for x in 'id severity msg'.split()]+[loc.attrib['file'],loc.attrib['line']]
    tbl = '\n'.join(['\t\t'.join(x) for x in errors(root)])
    del tree
    return tbl