Python解析XML的minidom

官方文档 ： https://wiki.python.org/moin/MiniDom

注意事项：在解析或生成Dom结构的过程中，其对象的内部编码是Unicode类型的，当要写入文件时，需要先编码为 utf-8

示例代码，filmlist是一个字典列表，本函数的结果可作为Solr的入库XML

def gen_xml(filmlist):
    root = ET.Element("add")
    for film in filmlist:
        doc = ET.SubElement(root, "doc")
        for key in film.iterkeys():
            field = ET.SubElement(doc, "field")
            field.set("name", key)
            field.text = film[key]
    tree = ET.ElementTree(root)
    f=open("test.xml",'w')
    with open('test.xml', 'w') as f:
        f.write(minidom.parseString(ET.tostring(tree.getroot(), 'utf-8')).toprettyxml(indent=" ").encode('utf-8'))