Python 解析XML

import xml.sax

class MovieHandleSAX(xml.sax.ContentHandler):

       SAX解析xml,SAX是一种基于事件驱动器的API，涉及到两部分，解析器和事件处理器
       解析器负责读取XML文档，并向事件处理器发送事件，
       事件处理器对事件响应
       ContentHandler 类方法介绍
       characters(content) 方法

       调用时机：
       从行开始，遇到标签之前，存在字符，content 的值为这些字符串。
       从一个标签，遇到下一个标签之前， 存在字符，content 的值为这些字符串。
       从一个标签，遇到行结束符之前，存在字符，content 的值为这些字符串。
       标签可以是开始标签，也可以是结束标签。
       startDocument() 方法 文档启动的时候调用。
       endDocument() 方法 解析器到达文档结尾时调用。
       startElement(name, attrs) 方法 遇到XML开始标签时调用，name 是标签的名字，attrs 是标签的属性值字典。
       endElement(name) 方法 遇到XML结束标签时调用。
   
   def __init__(self):
       self.CurrentData = ""
       self.type = ""
       self.format = ""
       self.year = ""
       self.rating = ""
       self.stars = ""
       self.description = ""

   #元素开始调用的方法
   def startElement(self,tag,attrubutes):
       self.CurrentData = tag
       if tag == "movie":
           print("**********Movie**********")
           title = attrubutes["title"]
           print("Title:",title)
           pass
       pass
   
   def endElement(self,arg):
       if self.CurrentData == "type":
           print("Type:",self.type)
       elif self.CurrentData == "format":
           print("Format:",self.type)
       elif self.CurrentData == "year":
           print("Year:",self.type)
       elif self.CurrentData == "rating":
           print("Rating:",self.type)
       elif self.CurrentData == "stars":
           print("Stars:",self.type)
       elif self.CurrentData == "description":
           print("Description:",self.type)
           pass
       self.CurrentData = ""
       pass

   def characters(self,content):
       if self.CurrentData == "type":
           self.type = content
       elif self.CurrentData == "format":
           self.format = content
       elif self.CurrentData == "year":
           self.year = content
       elif self.CurrentData == "rating":
           self.rating = content
       elif self.CurrentData == "stars":
           self.stars = content
       elif self.CurrentData == "description":
           self.description = content
           pass
       pass


from xml.dom.minidom import parse
import xml.dom.minidom

def MovieHandleDOM():
   domTree = xml.dom.minidom.parse("movies.xml")
   collection = domTree.documentElement
   if collection.hasAttribute("shelf"):
       print("Root element:%s" % collection.getAttribute("shelf"))
       pass
   
   movies = collection.getElementsByTagName("movie")
   for movie in movies:
       print("**********Movie**********")
       if movie.hasAttribute("title"):
           print("Title: %s" % movie.hasAttribute("title"))
           pass

       type1 = movie.getElementsByTagName('type')[0]
       print('Type: %s' % type1.childNodes[0].data)
       format = movie.getElementsByTagName('format')[0]
       print('Format: %s' % format.childNodes[0].data)
       ratting = movie.getElementsByTagName('rating')[0]
       print('Rating: %s' % ratting.childNodes[0].data)
       description = movie.getElementsByTagName('description')[0]
       print('Description: %s' % description.childNodes[0].data)
       
if __name__ == '__main__':
   if 0:
       #创建解析器对象
       parser = xml.sax.make_parser()
       parser.setFeature(xml.sax.handler.feature_namespaces,0)
       Handle = MovieHandleSAX()
       parser.setContentHandler(Handle)
       parser.parse("movies.xml")
   else:
       MovieHandleDOM()

file.xml

<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>