The Python series uses regular expressions to remove HTML strings __php

Source: Internet
Author: User
Key code See red Section
#-*-coding:utf-8-*-Import re# #过滤HTML中的标签 #将HTML中标签等信息去掉 # @param htmlstr HTML string.defFilter_tags (HTMLSTR): #先过滤CDATA re_cdata=re.compile ('//<!\[cdata\[[^>]*//\]\]> ', re. I) #匹配CDATA re_script=re.compile (' <\s*script[^>]*>[^<]*<\s*/\s*script\s*> ', re. I) #Script re_style=re.compile (' <\s*style[^>]*>[^<]*<\s*/\s*style\s*> ', re. I) #stylere_br=re.compile (' <br\s*?/?> ') #处理换行Re_h=re.compile (' </?\w+[^>]*> ') #HTML标签 re_comment=re.compile (' <!--[^>]*--> ') #HTML注释 s=re_cdata . Sub (', htmlstr) #去掉CDATA s=re_script.sub (', s) #去掉SCRIPT s=re_style.sub (', s) #去掉styles=re_br.sub (' \ n ', s) #将br转换为换行S=re_h.sub (', s) #去掉HTML label S=re_comment.sub (', s) #去掉HTML注释 #去掉多余的空行 blank_line=re.compile (' \n+ ') s=blank_line . Sub (' \ n ', s) s=replacecharentity (s) #替换实体 returnS # #替换常用HTML字符实体.
#使用正常的字符替换HTML中特殊的字符实体.
#你可以添加新的实体字符到CHAR_ENTITIES中 to handle more HTML character entities. # @param htmlstr HTML string.defReplacecharentity (HTMLSTR): char_entities={' nbsp ': ', ' 160 ': ', ' lt ': ' < ', ' a ': ' < ', ' GT ': ' > ', ' ', ': ' > ', ' Amp ': ' & ', ' R ': ' & ', ' quot ': ' ', ' re_charentity=re.compile ': ' ',} &#?
    p<name>\w+); ') Sz=re_charentity.search (HTMLSTR) whileSz:entity=sz.group () #entity全称, such as &gt; Key=sz.group (' name ') #去除 &; entity, such as &gt; for GTTry: Htmlstr=re_charentity.sub (char_entities[key],htmlstr,1) sz=re_charentity.search (HTMLSTR)exceptKeyerror: #以空串代替 htmlstr=re_charentity.sub (', htmlstr,1) Sz=re_charentity.search (HTMLSTR) returnHtmlstrdefRepalce (s,re_exp,repl_string): returnRe_exp.sub (Repl_string,s)if__name__== ' __main__ ': s=file (' google.htm '). Read () news=filter_tags (s)PrintNews
Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.