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,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) + 1
node.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‘)