xml创建

import xml.etree.ElementTree as ET

new_xml = ET.Element("namelist")

name = ET.SubElement(new_xml, "name", attrib={"enrolled": "yes"})age = ET.SubElement(name, "age", attrib={"checked": "no"})sex = ET.SubElement(name, "sex")sex.text = '33'name2 = ET.SubElement(new_xml, "name", attrib={"enrolled": "no"})age = ET.SubElement(name2, "age")age.text = '19'

et = ET.ElementTree(new_xml) # 生成文档对象

et.write("test.xml", encoding="utf-8", xml_declaration=True)

ET.dump(new_xml) # 打印生成的格式

xml遍历

import xml.etree.ElementTree as ET

tree = ET.parse("xmltest.xml")

root = tree.getroot()print(root.tag)

#遍历xml文档

for child in root:print(child.tag, child.attrib)for i in child:print(i.tag, i.text, i.attrib)

#只遍历year 节点

for node in root.iter("gdppc"):print(node.tag, node.text)

xml修改和删除

import xml.etree.ElementTree as ET

tree = ET.parse("xmltest.xml")

root = tree.getroot()

修改

for node in root.iter('year'):

new_year = int(node.text) + 1node.text = str(new_year)node.set("updated", "yes")

tree.write("xmltest.xml")

删除node

for country in root.findall('country'):

rank = int(country.find('rank').text)if rank > 50:root.remove(country)

tree.write('output.xml')