无法使用xml minidom通过Python正确移除嵌套的xml标签

import xml.etree.ElementTree as ET

tree = ET.parse('file.xml')
root = tree.getroot()

for parent in root.findall('parent_tag'):
    for child in parent.findall('child_tag'):
        parent.remove(child)

tree.write('file.xml')

import xml.etree.ElementTree as ET

# 解析XML文件
tree = ET.parse('file.xml')
root = tree.getroot()

# 遍历XML树，找到需要移除的嵌套标签
for parent in root.findall('parent_tag'):
    for child in parent.findall('child_tag'):
        parent.remove(child)

# 保存修改后的XML文件
tree.write('file.xml')