import xml.etree.cElementTree as _xml
def createXML(filename):
    root = _xml.Element("Файл")
    header = _xml.SubElement(root, "СвУч")
    body = _xml.SubElement(root, "Документ")
    xmlns_uris = {'xsd': 'http://www.w3.org/2001/XMLSchema',
                  'xsi': 'http://www.w3.org/2001/XMLSchema-instance'}
    add_XMLNS_attributes(root, xmlns_uris)
    _xml.SubElement(header, "field1", name="имя").text = "знач"
    _xml.SubElement(header, "field2", name="place").text = "some val"
    tree = _xml.ElementTree(root)
    tree.write(filename.encode("utf-8"), encoding="windows-1251",\
    method="xml", xml_declaration=True)