day⑥：xml模块

#!/usr/bin/env python
#coding=utf-8
import xml.etree.cElementTree as ET
tree=ET.parse("test.xml")
root=tree.getroot()
print(root.tag)
for child in root:
    print(child.tag,child.attrib)
    for i in child:
        print("---->",i.tag,i.text)
for node in root.iter(‘year‘):
    print(node.tag,node.text)

#!/usr/bin/env python
#coding=utf-8
import xml.etree.cElementTree as ET
tree=ET.parse("test.xml")
root=tree.getroot()
print(root.tag)
for node in root.iter(‘year‘):
    new_year=int(node.text) +100
    node.text=str(new_year)
    node.set("new_attrib","attrib_value")
tree.write("new_test.xml")
for country in root.findall(‘country‘):
    rank=int(country.find(‘rank‘).text)
    if rank >50:
        root.remove(country)
tree.write("new_test2.xml")

#!/usr/bin/env python
#coding=utf-8
import xml.etree.ElementTree as ET
new_xml = ET.Element("namelist")  #root
name = ET.SubElement(new_xml,"name",attrib={"enrolled":"yes"})
age = ET.SubElement(name,"age",attrib={"checked":"no"})
sex = ET.SubElement(name,"sex")
age.text = ‘33‘
sex.text="boy"
name2 = ET.SubElement(new_xml,"name",attrib={"enrolled":"no"})
age = ET.SubElement(name2,"age")
sex = ET.SubElement(name2,"sex")
age.text = ‘19‘
sex.text=‘girl‘
et = ET.ElementTree(new_xml) #生成文档对象
et.write("my_test.xml", encoding="utf-8",xml_declaration=True)
ET.dump(new_xml) #打印生成的格式