本文实例讲述了Python使用sax模块解析XML文件。分享给大家供大家参考，具体如下：
XML样例：
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<?xml version="1.0"?>
<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>
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SAX解析代码展示：
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from xml import sax
class MovieHandler(sax.ContentHandler):
def __init__(self):
# 初始化数据，并增加一个当前数据
self.CurrentData = ""
self.type = ""
self.format = ""
self.year = ""
self.rating = ""
self.stars = ""
self.description = ""
# 文档启动的时候调用
def startDocument(self):
print('XML开始解析中...')
# 元素开始事件处理
def startElement(self, name, attrs):
self.CurrentData=name
if self.CurrentData=='movie':
print('*********movie*********')
title=attrs['title']
print('Title:{0}'.format(title))
# 内容事件处理
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
# 元素结束事件处理
def endElement(self, name):
if self.CurrentData=='type':
print('Type:{0}'.format(self.type))
elif self.CurrentData=='format':
print('Format:{0}'.format(self.format))
elif self.CurrentData=='year':
print('Year:{0}'.format(self.year))
elif self.CurrentData == 'rating':
print('Rating:{0}'.format(self.rating))
elif self.CurrentData == 'stars':
print('Stars:{0}'.format(self.stars))
elif self.CurrentData == 'description':
print('Description:{0}'.format(self.description))
self.CurrentData = ""
# 文档结束的时候调用
def endDocument(self):
print('XML文档解析结束!')
if __name__=='__main__':
handler=MovieHandler()
parser = sax.make_parser()
# parser.setFeature(sax.handler.feature_namespaces, 0)
parser.setContentHandler(handler)
parser.parse("sax_test.xml")
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PS：这里再为大家提供几款关于xml操作的在线工具供大家参考使用：
在线格式化XML/在线压缩XML：https://tool.zzvips.com/t/xml/
希望本文所述对大家Python程序设计有所帮助。
原文链接：https://www.cnblogs.com/wcwnina/p/7233386.html