总结了一下使用Python对xml文件的解析，用到的模块儿如下：

分别从xml字符串和xml文件转换为xml对象，然后解析xml内容，查询指定信息字段。

from xml.dom.minidom import parse, parseString
from xml.etree import ElementTree
import xml.dom.minidom

"""
Get XML String info 查询属性值
    response:xml string
    tag:xml tag
    element:xml attribute
"""
def get_xml_info(response, element):
    DOMTree = xml.dom.minidom.parseString(response)
    return DOMTree.documentElement.getAttribute(element)

"""
Get XML String info 查询制定名称的特定标签id
    xmlstring:xml str

    return config id
"""
def get_config_id_from_xml(xmlstring, scan):
    root = ElementTree.fromstring(xmlstring)
    configs = root.findall('config')
    for config in configs:
        config_name = config.find('name').text
        if config_name == scan:
            return config.attrib['id']

"""
Get XML String info 查询指定id
    xmlstring:xml str

    return report id
"""
def get_report_id_from_xml(xmlstring):
    root = ElementTree.fromstring(xmlstring)
    report_id = root.find('report_id').text
    return report_id

"""
Get XML String info
    xmlstring:xml str

    return progress 
"""
def get_progress_from_xml(xmlstring):
    root = ElementTree.fromstring(xmlstring)
    task = root.find('task')
    progress = float(task.find('progress').text)
    if progress < 0:
        return 100.0
    else:
        return progress

"""
Get XML Report info 从xml文件查询
    file_path : report path
"""
def get_xml_report(file_path):
    report = {}
    result_dicts = {}
    resultsList = []
    try:
        root = ElementTree.parse(file_path)
    except:
        return {}

    if root is not None:
        creation_time = root.find("creation_time")
        if creation_time is not None:
            report[creation_time.tag] = creation_time.text
        if root.find("report") is not None:
            scan_start = root.find("report").find("scan_start")
            if scan_start is not None:
                if scan_start.text:
                    report[scan_start.tag] = scan_start.text
        results = root.getiterator("result")
        if results is not None:
            for result in results:
                if result.find("threat") is not None:
                    if result.find("threat").text != "Log":
                        resultsList.append(getResults(result))

    report["Results"] = resultsList
    return report