python xml 模組

標籤：print   date   XML   att   findall   version   tag   get   處理   

xml 處理：xml是實現不同語言或程式之間進行資料交換的協議，跟json差不多，但json使用起來更簡單，在json還沒誕生的黑暗年代，大家只能選擇用xml呀，至今很多傳統公司如金融行業的很多系統的介面還主要是xml。文檔格式：他是通過<> 節點來區別資料結構的：

文檔格式

<?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>　　

#python操作xml協議：import xml.etree.ElementTree as ETimport xml.etree.ElementTree as ETtree = ET.parse("xmltest.xml")root = tree.getroot()print(root.tag)# 遍曆xml文檔for child in root:    print(child.tag, child.attrib)    for i in child:        print(i.tag, i.text)# 只遍曆year 節點for node in root.iter(‘year‘):    print(node.tag, node.text)#修改和刪除xml文檔內容import xml.etree.ElementTree as ETtree = ET.parse("xmltest.xml")root = tree.getroot()# 修改for node in root.iter(‘year‘):    new_year = int(node.text) + 1    node.text = str(new_year)    node.set("updated", "yes")tree.write("xmltest.xml")# 刪除nodefor country in root.findall(‘country‘):    rank = int(country.find(‘rank‘).text)    if rank > 50:        root.remove(country)tree.write(‘output.xml‘)# 自己建立xml文檔import xml.etree.ElementTree as ETnew_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)  # 產生文檔對象et.write("test.xml", encoding="utf-8", xml_declaration=True)ET.dump(new_xml)  # 列印產生的格式　

python xml 模組