如何用Python批量修改xml文件内容？ 自动化处理xml数据的实用脚本

import xml.etree.ElementTree as ET
<p>def modify_xml_file(file_path):</p><h1>解析XML文件</h1><pre class='brush:php;toolbar:false;'>tree = ET.parse(file7path)
root = tree.getroot()

# 示例：修改所有 <name> 标签的内容
for name_elem in root.iter('name'):
    if name_elem.text == '旧名称':
        name_elem.text = '新名称'

# 示例：给 <item> 标签添加属性
for item in root.findall('item'):
    item.set('updated', 'true')

# 保存修改后的文件
tree.write(file_path, encoding='utf-8', xml_declaration=True)

import os
<p>def batch_modify_xml(directory):
for filename in os.listdir(directory):
if filename.endswith('.xml'):
file_path = os.path.join(directory, filename)
try:
modify_xml_file(file_path)
print(f"已处理: {filename}")
except Exception as e:
print(f"处理失败 {filename}: {e}")</p>

batch_modify_xml('./xml_files')

def update_value_by_id(file_path, target_id, new_value):
    tree = ET.parse(file_path)
    root = tree.getroot()
<pre class='brush:php;toolbar:false;'>for item in root.findall('item'):
    item_id = item.get('id')
    if item_id == target_id:
        price_elem = item.find('price')
        if price_elem is not None:
            price_elem.text = str(new_value)

tree.write(file_path, encoding='utf-8', xml_declaration=True)

import shutil
<p>def backup_and_modify(directory):
backup_dir = directory + '_backup'
if not os.path.exists(backup_dir):
shutil.copytree(directory, backup_dir)
batch_modify_xml(directory)</p>