xml模塊

xml創建

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) # 生成文檔對象
et.write("test.xml", encoding="utf-8", xml_declaration=True)

ET.dump(new_xml) # 打印生成的格式

xml遍歷

import xml.etree.ElementTree as ET

tree = ET.parse("xmltest.xml")
root = tree.getroot()
print(root.tag)

#遍歷xml文檔
for child in root:
print(child.tag, child.attrib)
for i in child:
print(i.tag, i.text, i.attrib)

#只遍歷year 節點
for node in root.iter("gdppc"):
print(node.tag, node.text)

xml修改和刪除

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")

刪除node

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

tree.write('output.xml')