如何将xml文件保存到磁盘？

import xml.etree.ElementTree as ET

# 创建一个XML元素
root = ET.Element("root")

# 添加子元素
child1 = ET.SubElement(root, "child1")
child2 = ET.SubElement(root, "child2")

# 添加元素属性
child1.set("attribute1", "value1")
child2.set("attribute2", "value2")

# 添加元素文本内容
child1.text = "This is child1"
child2.text = "This is child2"

# 创建一个XML树
tree = ET.ElementTree(root)

# 将XML树保存到磁盘
tree.write("output.xml")

<root>
 <child1 attribute1="value1">This is child1</child1>
 <child2 attribute2="value2">This is child2</child2>
</root>