python解析xml文件操作实例，python解析xml实例

文章由Byrx.net分享于2019-03-22 05:03:55评论（319）

python解析xml文件操作实例，python解析xml实例

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：

<?xml version="1.0" ?> 
<!--Simple xml document__chapter 8--> 
<book> 
  <title> 
    sample xml thing 
  </title> 
  <author> 
    <name> 
      <first> 
        ma 
      </first> 
      <last> 
        xiaoju 
      </last> 
    </name> 
    <affiliation> 
      Springs Widgets, Inc. 
    </affiliation> 
  </author> 
  <chapter number="1"> 
    <title> 
      First 
    </title> 
    <para> 
      I think widgets are greate.You should buy lots of them forom 
      <company> 
        Spirngy Widgts, Inc 
      </company> 
    </para> 
  </chapter> 
</book>

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。

python操作xml文件问题

我给你个示例代码，你自己改改增加子节点那一段就好了。
#!/usr/bin/python# -*- coding=utf-8 -*-# author : wklken@yeah.net# date: 2012-05-25# version: 0.1from xml.etree.ElementTree import ElementTree,Elementdef read_xml(in_path): '''读取并解析xml文件 in_path: xml路径 return: ElementTree''' tree = ElementTree() tree.parse(in_path) return treedef write_xml(tree, out_path): '''将xml文件写出 tree: xml树 out_path: 写出路径''' tree.write(out_path, encoding="utf-8",xml_declaration=True)def if_match(node, kv_map): '''判断某个节点是否包含所有传入参数属性 node: 节点 kv_map: 属性及属性值组成的map''' for key in kv_map: if node.get(key) != kv_map.get(key): return False return True#---------------search -----def find_nodes(tree, path): '''查找某个路径匹配的所有节点 tree: xml树 path: 节点路径''' return tree.findall(path)def get_node_by_keyvalue(nodelist, kv_map): '''根据属性及属性值定位符合的节点，返回节点 nodelist: 节点列表 kv_map: 匹配属性及属性值map''' result_nodes = [] for node in nodelist: if if_match(node, kv_map): result_nodes.append(node) return result_nodes#---------------change -----def change_node_properties(nodelist, kv_map, is_delete=False): '''修改/增加 /删除节点的属性及属性值 nodelist: 节点列表 kv_map:属性及属性值map''' for node in nodelist: for key in kv_map: if is_delete: ......余下全文>>

python怎解析XML文档？

导入：from xml.dom import minidom （xml 是我们所知的包，dom 是xml 中嵌套的包，而 minidom 是 xml.dom 中的模块。)
Xmldoc=minidom.parse(‘待解析的xml 文档’)

热门文章：

python解析xml文件操作实例，python解析xml实例