本文实例讲述了python解析xml文件操作的实现方法。分享给大家供大家参考。具体方法如下：

xml文件内容如下：

 
 
 
   
   
     
       
        ma 
       
       
        xiaoju 
       
     
     
      Springs Widgets, Inc. 
     
   
   
     
     
      I think widgets are greate.You should buy lots of them forom 
       
        Spirngy Widgts, Inc 
       
     
   
 

python代码：

from xml.dom import minidom, Node 
import re, textwrap 
 
class SampleScanner: 
  \"\"\"\"\"\" 
 
  def __init__(self, doc): 
    \"\"\"Constructor\"\"\" 
    assert(isinstance(doc, minidom.Document)) 
    for child in doc.childNodes: 
      if child.nodeType == Node.ELEMENT_NODE and \\ 
        child.tagName == \"book\": 
        self.handle_book(child) 
         
  def handle_book(self, node): 
     
    for child in node.childNodes: 
      if child.nodeType != Node.ELEMENT_NODE: 
        continue 
      if child.tagName == \"title\": 
        print \"Book titile is:\", self.gettext(child.childNodes) 
      if child.tagName == \"author\": 
        self.handle_author(child) 
      if child.tagName == \"chapter\": 
        self.handle_chapter(child) 
         
  def handle_chapter(self, node): 
    number = node.getAttribute(\"number\") 
    print \"number:\", number 
    title_node = node.getElementsByTagName(\"title\") 
    print \"title:\", self.gettext(title_node) 
     
    for child in node.childNodes: 
      if child.nodeType != Node.ELEMENT_NODE: 
        continue 
      if child.tagName == \"para\": 
        self.handle_chapter_para(child) 
         
  def handle_chapter_para(self, node): 
    company = \"\" 
    company = self.gettext(node.getElementsByTagName(\"company\")) 
    print \"chapter:para:company\", company 
     
         
  def handle_author(self, node): 
    for child in node.childNodes: 
      if child.nodeType != Node.ELEMENT_NODE: 
        continue 
      if child.tagName == \"name\": 
        self.handle_author_name(child) 
      if child.tagName == \"affiliation\": 
        print \"affiliation:\", self.gettext(child.childNodes) 
         
  def handle_author_name(self, node): 
    first = \"\" 
    last = \"\" 
    for child in node.childNodes: 
      if child.nodeType != Node.ELEMENT_NODE: 
        continue 
      if child.tagName == \"first\": 
        first = self.gettext(child.childNodes) 
      if child.tagName == \'last\': 
        last = self.gettext(child.childNodes) 
         
    print \"firstname:%s,lastname:%s\" % (first, last) 
     
         
  def gettext(self, nodelist): 
    retlist = [] 
    for node in nodelist: 
      if node.nodeType == Node.TEXT_NODE: 
        retlist.append(node.wholeText) 
      elif node.hasChildNodes: 
        retlist.append(self.gettext(node.childNodes)) 
         
    return re.sub(\'\\s+\', \" \", \'\'.join(retlist)) 
   
         
if __name__==\"__main__\": 
  doc = minidom.parse(\"simple.xml\") 
  sample = SampleScanner(doc) 

希望本文所述对大家的Python程序设计有所帮助。