从html提取python url [英] python url extract from html

问题描述

我需要python正则表达式才能从html中提取网址， 示例html代码:

I need python regex to extract url's from html, example html code :

<a href=""http://a0c5e.site.it/r"" target=_blank><font color=#808080>MailUp</font></a>
<a href=""http://www.site.it/prodottiLLPP.php?id=1"" class=""txtBlueGeorgia16"">Prodotti</a>
<a href=""http://www.site.it/terremoto.php"" target=""blank"" class=""txtGrigioScuroGeorgia12"">Terremoto</a>
<a class='mini' href='http://www.site.com/remove/professionisti.aspx?Id=65&Code=xhmyskwzse'>clicca qui.</a>`

我只需要提取:

 http://a0c5e.site.it/r
 http://www.site.it/prodottiLLPP.php?id=1
 http://www.site.it/terremoto.php
 http://www.site.com/remove/professionisti.aspx?Id=65&Code=xhmyskwzse

推荐答案

观察

Python 2.7.3 (default, Sep  4 2012, 20:19:03) 
[GCC 4.2.1 20070831 patched [FreeBSD]] on freebsd9
Type "help", "copyright", "credits" or "license" for more information.
>>> junk=''' <a href=""http://a0c5e.site.it/r"" target=_blank><font color=#808080>MailUp</font></a>
... <a href=""http://www.site.it/prodottiLLPP.php?id=1"" class=""txtBlueGeorgia16"">Prodotti</a>
... <a href=""http://www.site.it/terremoto.php"" target=""blank"" class=""txtGrigioScuroGeorgia12"">Terremoto</a>
... <a class='mini' href='http://www.site.com/remove/professionisti.aspx?Id=65&Code=xhmyskwzse'>clicca qui.</a>`'''
>>> import re
>>> pat=re.compile(r'''http[\:/a-zA-Z0-9\.\?\=&]*''')
>>> pat.findall(junk)
['http://a0c5e.site.it/r', 'http://www.site.it/prodottiLLPP.php?id=1', 'http://www.site.it/terremoto.php', 'http://www.site.com/remove/professionisti.aspx?Id=65&Code=xhmyskwzse']

可能想添加％，以便您可以捕获其他转义符.

Might want to add % so you can catch other escapes.

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