<?xml version="1.0"?>
<data><country name="Liechtenstein"><rank updated="yes">2</rank><year>2008</year><gdppc>141100</gdppc><neighbor name="Austria" direction="E"/><neighbor name="Switzerland" direction="W"/></country><country name="Singapore"><rank updated="yes">5</rank><year>2011</year><gdppc>59900</gdppc><neighbor name="Malaysia" direction="N"/></country><country name="Panama"><rank updated="yes">69</rank><year>2011</year><gdppc>13600</gdppc><neighbor name="Costa Rica" direction="W"/><neighbor name="Colombia" direction="E"/></country>
</data>

import xml.etree.ElementTree as ETtree = ET.parse("xml test")  # 打开xml文件
root = tree.getroot()  # 得到根节点
# print(dir(root))
print(root.tag)
# 遍历xml文档
for child in root:print('----------',child.tag, child.attrib)  # 打印country节点for i in child:print(i.tag,i.text)

import xml.etree.ElementTree as ETtree = ET.parse("xml_test")
root = tree.getroot() #f.seek(0)# 修改
for node in root.iter('year'):new_year = int(node.text) + 5node.text = str(new_year) # 修改内容node.set("attr_test","false")
tree.write('output.xml') # 写入文件# #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')

import xml.etree.ElementTree as ETroot = ET.Element("namelist")  # 创建root

name = ET.SubElement(root,"name",attrib={"enrolled":"yes"})  # 创建child--name
age = ET.SubElement(name,"age",attrib={"checked":"no"}) # 创建name child--age,sex,name
sex = ET.SubElement(name,"sex")
n = ET.SubElement(name,"name")
n.text = "Alex Li"
sex.text = 'male'name2 = ET.SubElement(root,"name",attrib={"enrolled":"no"})
age = ET.SubElement(name2,"age")
age.text = '19'et = ET.ElementTree(root)  # 生成文档对象
et.write("build_out.xml", encoding="utf-8",xml_declaration=True)

import xml.etree.ElementTree as ET
from xml.dom import minidomdef subElement(root, tag, text):ele = ET.SubElement(root, tag)ele.text = textdef saveXML(root, filename, indent="\t", newl="\n", encoding="utf-8"):rawText = ET.tostring(root)dom = minidom.parseString(rawText)with open(filename, 'w') as f:dom.writexml(f, "", indent, newl, encoding)root = ET.Element("namelist")to = root.makeelement("to", {})
to.text = "peter"
root.append(to)name = ET.SubElement(root,"name",attrib={"enrolled":"yes"})  # 创建child--name
age = ET.SubElement(name,"age",attrib={"checked":"no"}) # 创建name child--age,sex,name
sex = ET.SubElement(name,"sex")
n = ET.SubElement(name,"name")
n.text = "Alex Li"
sex.text = 'male'name2 = ET.SubElement(root,"name",attrib={"enrolled":"no"})
age = ET.SubElement(name2,"age")
age.text = '19'# et = ET.ElementTree(root)  # 生成文档对象# 保存xml文件
saveXML(root, "note.xml")