标签：cti list xml文件 lan enc check country nod 数据交换
xml模块
xml是实现不同语言或程序之间进行数据交换的协议，跟json差不多，但json使用起来更简单，不过，古时候，在json还没诞生的黑暗年代，大家只能选择用xml呀，至今很多传统公司如金融行业的很多系统的接口还主要是xml。
xml的格式如下，就是通过<>节点来区别数据结构的:
<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协议在各个语言里的都 是支持的，在python中可以用以下模块操作xml：
import xml.etree.ElementTree as ET
tree = ET.parse(‘xml_lesson.xml‘)
root = tree.getroot()
print(root.iter(‘year‘)) #全文搜索
print(root.find(‘country‘)) #在root的子节点找，只找一个
print(root.findall(‘country‘)) #在root的子节点找，找所有
对xml文档进行查、增、删、改
import xml.etree.ElementTree as ET
tree = ET.parse("xml_lesson.xml")
root = tree.getroot()
print(root.tag)
#-------------------------------遍历xml文档---------------------------------------
for contry in root:
print(‘========>‘, contry.tag, contry.attrib, contry.attrib[‘name‘]) #一级信息
for i in contry:
print(i.tag, i.attrib, i.text) #二级信息
#-------------------------------只遍历year节点------------------------------------
for node in root.iter(‘year‘):
print(node.tag, node.text)
#-------------------------------增加节点--------------------------------------------
for country in root.findall(‘country‘):
for year in country.findall(‘year‘):
if int(year.text) > 2000:
year2 = ET.Element(‘year2‘) #增加year2节点
year2.text = "New century" #为year2添加文本信息
year2.attrib = {‘update‘:‘yes‘} #为year2添加属性
country.append(year2) #往country节点下添加子节点
tree.write(‘xmladd.xml‘) #保存更新
#--------------------------------删除节点--------------------------------------------
for country in root.findall(‘country‘):
rank = int(country.find(‘rank‘).text)
if rank > 50:
root.remove(country)
tree.write(‘output.xml‘) #保存更新
#---------------------------------修改节点--------------------------------------------
for node in root.iter(‘year‘):
new_year = int(node.text) + 1
node.text = str(new_year)
node.set(‘updated‘, ‘yes‘) #给year节点添加属性 {updated="yes"}
node.set(‘version‘, ‘1.0‘) #给year节点添加属性 {version="1.0"}
tree.write(‘xmltest.xml‘) #保存更新
自己创建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
标签：cti list xml文件 lan enc check country nod 数据交换
原文地址：https://www.cnblogs.com/cjsword/p/10546984.html
