# -*- coding:utf-8 -*-
import xml.etree.ElementTree as ET
tree = ET.parse("xml_lesson") # ** parse方法(打开文件)
root = tree.getroot()
# print(root.tag) # ** tag方法(当前标签)
# ***************** 遍历整个文档
for i in root:
print(i.tag, i.attrib) # ** attrib方法(标签的属性)
for j in i:
print(j.tag, j.text) # ** text方法(标签内容)
# ******** 只遍历节点
for node in root.iter('year'): # ** iter方法(过滤)
print(node.tag, node.text)
# ****************修改文件
for node in root.iter('year'): # 遍历year
new_year = int(node.text)+1 # year下面的值转为int类型然后加一
node.text = str(new_year) # 转为str保存文件
node.set("updated", 'yes') # set方法(标签添加属性)
tree.write('a.xml') # 没执行这条语句之前,所有修改都只是保存在内存中
# 新建文件储存,可以覆盖源文件,也可也新建
# ***************删除部分
for country in root.findall("country"): # ** findall方法(找寻多个)
rand = int(country.find('rank').text) # ** find方法(找一个)
if rand >50:
root.remove(country) # ** remove方法(删除节点)
tree.write('a.xml') # 写一个新文件
# ************* 创建一个 XML 文件
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