html标签中的正则表达式 [英] Regex within html tags

问题描述

我想从以下HTML片段中解析高清价格.我只有html代码的片段，因此我不能为此使用HTML解析器.

I would like to parse the HD price from the following snipper of HTML. I am only have fragments of the html code, so I cannot use an HTML parser for this.

<div id="left-stack">        
  <span>View In iTunes</span></a>
 <span class="price">£19.99</span>
 <ul class="list">
    <li>HD Version</li>

基本上，格式是在"HD Version"一词之前找到价格(不区分大小写).这是我到目前为止的内容:

Basically, the format would be to "Find the price before the word "HD Version" (case insensitive). Here is what I have so far:

re.match(r'^(\d|.){1,6}...HD\sVersion', string)

如何从上述字符串中提取值"19.99"?

How would I extract the value "19.99" from the above string?

推荐答案

BeautifulSoup 对HTML的非常宽容它进行解析，您也可以将其用于HTML的大块/部分:

BeautifulSoup is very lenient to the HTML it parses, you can use it for the chunks/parts of HTML too:

# -*- coding: utf-8 -*-
from bs4 import BeautifulSoup

data = u"""
<div id="left-stack">
  <span>View In iTunes</span></a>
 <span class="price">£19.99</span>
 <ul class="list">
    <li>HD Version</li>
"""

soup = BeautifulSoup(data)
print soup.find('span', class_='price').text[1:]

打印:

19.99

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