Python SAX解析XML

XML解析方式有SAX,DOM两种，单纯读取XML文档的话SAX有先天优势。下面介绍一下SAX解析XML：

import xml.sax
from xml.sax import make_parser
from xml.sax.handler import ContentHandler

class ParseHandler(ContentHandler):
    def __init__(self):
        self.CurrentData = ""
        self.type = ""
        self.format = ""
        self.year = ""
        self.ration = ""
        self.stars = ""
        self.description = ""

    def characters(self, content):
        print(content.strip().replace(' ', '').replace('\n', '').replace('\t', '').replace('\r', '').strip())

    def startDocument(self):
        print("解析开始")

    def endDocument(self):
        print("解析结束")

    def startElement(self, name, attrs):
        if name == 'movie':
            print("startElement", name, "attrs", attrs["title"])
        else:
            print("startElement", name, "attrs")

    def endElement(self, name):
        print("endElement", name)

if __name__ == '__main__':
    parser = make_parser()
    parser.setFeature(xml.sax.handler.feature_namespaces,0)
    Handel = ParseHandler()
    parser.setContentHandler(Handel)
    parser.parse("movies.xml")

 文件movies.xml内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<collection shelf="New Arrivals">
   <movie title="Enemy Behind">
      <type>War, Thriller</type>
      <format>DVD</format>
      <year>2003</year>
      <rating>PG</rating>
      <stars>10</stars>
      <description>Talk about a US-Japan war</description>
   </movie>
   <movie title="Transformers">
      <type>Anime, Science Fiction</type>
      <format>DVD</format>
      <year>1989</year>
      <rating>R</rating>
      <stars>8</stars>
      <description>A schientific fiction</description>
   </movie>
   <movie title="Trigun">
      <type>Anime, Action</type>
      <format>DVD</format>
      <episodes>4</episodes>
      <rating>PG</rating>
      <stars>10</stars>
      <description>Vash the Stampede!</description>
   </movie>
   <movie title="Ishtar">
      <type>Comedy</type>
      <format>VHS</format>
      <rating>PG</rating>
      <stars>2</stars>
      <description>Viewable boredom</description>
   </movie>
</collection>