编辑

这将使用 回复 模块提取数据并以JSON的形式加载数据：

import urllib
import json
import re
from bs4 import BeautifulSoup
web = urllib.urlopen("http://www.nasdaq.com/quotes/nasdaq-financial-100-stocks.aspx")
soup = BeautifulSoup(web.read(), 'lxml')
data  = soup.find_all("script")[19].string
p = re.compile('var table_body = (.*?);')
m = p.match(data)
stocks = json.loads(m.groups()[0])
>>> for stock in stocks:
...     print stock
[u'ASPS', u'Altisource Portfolio Solutions S.A.', 116.96, 2.2, 1.92, 86635, u'N', u'N']
[u'AGNC', u'American Capital Agency Corp.', 23.76, 0.13, 0.55, 3184303, u'N', u'N']
[u'ZION', u'Zions Bancorporation', 29.79, 0.46, 1.57, 2154017, u'N', u'N']

问题是脚本标记偏移量是硬编码的，并且没有可靠的方法在页面中定位它。对页面的更改可能会破坏代码。

原始答案

您可以从 http://www.nasdaq.com/quotes/nasdaq-100-stocks.aspx?render=download 下载相同数据的CSV表示，而不是尝试对数据进行屏幕扫描。

然后使用Python模块来解析和处理它。这不仅更方便，而且将是一个更有弹性的解决方案，因为对HTML的任何更改都很容易破坏您的屏幕抓取代码。

否则，如果查看实际的HTML，就会发现以下脚本标记中的页面中的数据是可用的：

<script type="text/javascript">var table_body = [["ATVI", "Activision Blizzard, Inc", 20.92, 0.21, 1.01, 6182877,  .1, "N", "N"],
["ADBE", "Adobe Systems Incorporated", 66.91, 1.44, 2.2, 3629837,  .6, "N", "N"],
["AKAM", "Akamai Technologies, Inc.", 57.47, 1.57, 2.81, 2697834,  .3, "N", "N"],
["ALXN", "Alexion Pharmaceuticals, Inc.", 170.2, 0.7, 0.41, 659817,  .1, "N", "N"],
["ALTR", "Altera Corporation", 33.82, -0.06, -0.18, 1928706,  .0, "N", "N"],
["AMZN", "Amazon.com, Inc.", 329.67, 6.1, 1.89, 5246300,  2.5, "N", "N"],
["YHOO", "Yahoo! Inc.", 35.92, 0.98, 2.8, 18705720,  .9, "N", "N"]];