一尘不染

Python BeautifulSoup XML解析

python

我编写了一个简单的脚本,用于使用BeautifulSoup模块解析XML聊天日志。标准的soup.prettify()可以正常工作,只是聊天日志中有很多绒毛。您可以在下面看到脚本代码和我正在使用的一些XML输入文件:

import sys
from BeautifulSoup import BeautifulSoup as Soup

def parseLog(file):
    file = sys.argv[1]
    handler = open(file).read()
    soup = Soup(handler)
    print soup.prettify()

if __name__ == "__main__":
    parseLog(sys.argv[1])

测试XML输入

<?xml version="1.0"?>
<?xml-stylesheet type='text/xsl' href='MessageLog.xsl'?>
<Log FirstSessionID="1" LastSessionID="2"><Message Date="10/31/2010" Time="3:43:48 PM"     DateTime="2010-10-31T20:43:48.937Z" SessionID="1"><From><User FriendlyName="Jon"/></From>    <To><User FriendlyName="Bill"/></To><Text Style="font-family:Segoe UI; color:#000000; ">hey, what's up?</Text></Message>
<Message Date="10/31/2010" Time="3:44:03 PM" DateTime="2010-10-15T20:44:03.421Z" SessionID="1"><From><User FriendlyName="Jon"/></From><To><User FriendlyName="Bill"/></To><Text Style="font-family:Segoe UI; color:#000000; ">Got your message</Text></Message> 
<Message Date="10/31/2010" Time="3:44:31 PM" DateTime="2010-10-15T20:44:31.390Z" SessionID="2"><From><User FriendlyName="Bill"/></From><To><User FriendlyName="Jon"/></To><Text Style="font-family:Segoe UI; color:#000000; ">oh, great</Text></Message>
<Message Date="10/31/2010" Time="3:44:59 PM" DateTime="2010-10-15T20:44:59.281Z" SessionID="2"><From><User FriendlyName="Bill"/></From><To><User FriendlyName="Jon"/></To><Text Style="font-family:Segoe UI; color:#000000; ">hey, i gotta run</Text></Message>

我希望能够将其输出为以下格式或至少比纯XML更可读的格式:

乔恩:嘿,怎么了?[10/31/10 @ 3:43p]

乔恩:收到了您的消息[10/31/10 @ 3:44p]

Bill:哦,太棒了[10/31/10 @ 3:44p]

等。我听说过有关PyParsing模块的一些体面的事,也许是时候试一试了。


阅读 181

收藏
2020-12-20

共1个答案

一尘不染

BeautifulSoup使获取xml中的属性和值变得非常简单。我调整了示例功能以使用这些功能。

import sys
from BeautifulSoup import BeautifulSoup as Soup

def parseLog(file):
    file = sys.argv[1]
    handler = open(file).read()
    soup = Soup(handler)
    for message in soup.findAll('message'):
        msg_attrs = dict(message.attrs)
        f_user = message.find('from').user
        f_user_dict = dict(f_user.attrs)
        print "%s: %s [%s @ %s]" % (f_user_dict[u'friendlyname'],
                                    message.find('text').decodeContents(),
                                    msg_attrs[u'date'],
                                    msg_attrs[u'time'])


if __name__ == "__main__":
    parseLog(sys.argv[1])
2020-12-20