模块xml

倒入模块

import xml.etree.ElementTree as ET

tree = ET.parse('xml_test')
root = tree.getroot()

xml模版

<data>
    <country name="Liechtenstein">
        <rank>1</rank>
        <year>2008</year>
        <gdppc>141100</gdppc>
        <neighbor name="Austria" direction="E"/>
        <neighbor name="Switzerland" direction="W"/>
    </country>
    <country name="Singapore">
        <rank>4</rank>
        <year>2009</year>
        <gdppc>59900</gdppc>
        <neighbor name="Malaysia" direction="N"/>
    </country>
    <country name="Panama">
        <rank>68</rank>
        <year>2010</year>
        <gdppc>13600</gdppc>
        <neighbor name="Costa Rica" direction="W"/>
        <neighbor name="Colombia" direction="E"/>
    </country>
</data>

查询

for i in root:
    # print('根节点',i.tag,i.attrib,i.text)
    for j in i:
        print('从节点',j.tag,j.attrib,j.text)

修改

for i in root.iter('year'):
    new_year = int(i.text) + 100
    i.text = str(new_year)
    i.set('Rainy','wangxiaolong')

tree.write('xml_test.xml')

删除

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

生成一个XML文件

import xml.etree.ElementTree as ET

new_xml = ET.Element('Rainy')

name = ET.SubElement(new_xml,'name',attrib = {'enrolled':'yes'})
age = ET.SubElement(name,'age',attrib = {'checked':'no'})
sex = ET.SubElement(name,'sex')
sex.text = '222'

name1 = ET.SubElement(new_xml,'name1',attrib={'Rainyyyy':'wangwww'})
age = ET.SubElement(name1,'age')
sex = ET.SubElement(name1,'sex')
age.text = '18'

et = ET.ElementTree(new_xml).   #生成编辑文档
et.write('ccc.xml',encoding='utf-8',xml_declaration=True)    #保存到磁盘

ET.dump(new_xml)