XML递归迭代分组

from lxml import etree

def recursive_grouping(element, group_dict):
    if element.tag not in group_dict:
        group_dict[element.tag] = []
    group_dict[element.tag].append(element)
    
    for child in element:
        recursive_grouping(child, group_dict)

# 示例XML数据
xml_data = """
<root>
    <category name="A">
        <item>Item 1</item>
        <item>Item 2</item>
    </category>
    <category name="B">
        <item>Item 3</item>
    </category>
</root>
"""

# 解析XML数据
root = etree.fromstring(xml_data)

# 初始化分组字典
group_dict = {}

# 进行递归分组
recursive_grouping(root, group_dict)

# 输出分组结果
for tag, elements in group_dict.items():
    print(f"Tag: {tag}")
    for elem in elements:
        print(f"  {etree.tostring(elem, encoding='unicode')}")