xml的格式如下，就是通過<>節點來區別數據結構的:

<?xml version="1.0"?>
<data><country name="Liechtenstein"><rank updated="yes">2</rank><year>2008</year><gdppc>141100</gdppc><neighbor name="Austria" direction="E"/><neighbor name="Switzerland" direction="W"/></country><country name="Singapore"><rank updated="yes">5</rank><year>2011</year><gdppc>59900</gdppc><neighbor name="Malaysia" direction="N"/></country><country name="Panama"><rank updated="yes">69</rank><year>2011</year><gdppc>13600</gdppc><neighbor name="Costa Rica" direction="W"/><neighbor name="Colombia" direction="E"/></country>
</data>

　　xml協議在各個語言里的都 是支持的，在python中可以用以下模塊操作xml

import xml.etree.ElementTree as ETtree = 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)#只遍歷year 節點
for node in root.iter('year'):print(node.tag,node.text)

　　修改和刪除xml文檔內容

 1 import xml.etree.ElementTree as ET
 2  
 3 tree = ET.parse("xmltest.xml")
 4 root = tree.getroot()
 5  
 6 #修改
 7 for node in root.iter('year'):
 8     new_year = int(node.text) + 1
 9     node.text = str(new_year)
10     node.set("updated","yes")
11  
12 tree.write("xmltest.xml")
13  
14  
15 #刪除node
16 for country in root.findall('country'):
17    rank = int(country.find('rank').text)
18    if rank > 50:
19      root.remove(country)
20  
21 tree.write('output.xml')

View Code

自己創建xml文檔

import xml.etree.ElementTree as ETnew_xml = ET.Element("namelist")
personinfo = ET.SubElement(new_xml,"personinfo",attrib={"enrolled":"yes"})
name = ET.SubElement(personinfo,"name")
name.text = ''Mr Sun''
age = ET.SubElement(personinfo,"age",attrib={"checked":"no"})
sex = ET.SubElement(personinfo,"sex")
age.text = '33'
personinfo2 = ET.SubElement(new_xml,"personinfo",attrib={"enrolled":"no"})
name = ET.SubElement(personinfo2,"name")
name.text = ''Mis Chen''
age = ET.SubElement(personinfo2,"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

?

轉載于:https://www.cnblogs.com/Desire1998/p/11130622.html

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