[python]使用xml.etree.ElementTree遍历xml所有节点

XML文件内容：

<students>
    <student name='刘备' sex='男' age='35'/>
    <student name='吕布' sex='男' age='38'/>
    <student name='貂蝉' sex='女' age='22'/>
</students>

代码：

#-*- coding: UTF-8 -*- 
# 从文件中读取数据
import xml.etree.ElementTree as ET

#全局唯一标识
unique_id = 1

#遍历所有的节点
def walkData(root_node, level, result_list):
    global unique_id
    temp_list =[unique_id, level, root_node.tag, root_node.attrib]
    result_list.append(temp_list)
    unique_id += 1
    
    #遍历每个子节点
    children_node = root_node.getchildren()
    if len(children_node) == 0:
        return
    for child in children_node:
        walkData(child, level + 1, result_list)
    return

#获得原始数据
#out:
#[
#    #ID, Level, Attr Map
#    [1, 1, {'ID':1, 'Name':'test1'}],
#    [2, 1, {'ID':1, 'Name':'test2'}],
#]
def getXmlData(file_name):
    level = 1 #节点的深度从1开始
    result_list = []
    root = ET.parse(file_name).getroot()
    walkData(root, level, result_list)

    return result_list

if __name__ == '__main__':
    file_name = 'test.xml'
    R = getXmlData(file_name)
    for x in R:
        print x
    pass

输出结果：

[1, 1, 'students', {}]
[2, 2, 'student', {'age': '35', 'name': u'\u5218\u5907', 'sex': u'\u7537'}]
[3, 2, 'student', {'age': '38', 'name': u'\u5415\u5e03', 'sex': u'\u7537'}]
[4, 2, 'student', {'age': '22', 'name': u'\u8c82\u8749', 'sex': u'\u5973'}]