使用Python从Java脚本提取文本 [英] Extract Text from Javascript using Python

问题描述

我一直在研究如何执行此操作的示例，但还不太清楚.我正在使用beautifulsoup抓取一些数据-可以使用它来查找所需的数据，但是它包含在以下代码块中.我正在尝试从中提取时间戳信息.我有一个正则表达式在这里起作用的感觉，但我似乎无法弄清楚-有什么建议吗?

I've been looking at examples of how to do this but can't quite figure it out. I'm using beautifulsoup to scrape some data - I am able to use it to find the data I want, but it is contained in the following block of code. I'm trying to extract the timestamp information from it. I have a feeling regular expressions work here but I can't seem to figure it out - any suggestions??

    <script class="code" type="text/javascript">
    $(document).ready(function(){
    line1 = [['2009-02-23 10 AM', 5203], ['2009-02-08 10 AM', 3898], ['2009-02-09 10 AM', 4923], ['2009-02-22 10 AM', 3682], ['2009-02-21 10 AM', 3238], ['2009-02-20 10 AM', 4648]];
    options1 = {
    etc other text
      }
    });
    </script>

推荐答案

您不能使用BS来获取此数据-BS仅适用于HTML/XML，而不适用于JavaScript.

You can't use BS to get this data - BS works only with HTML/XML, not JavaScript.

您必须使用regular expressions或标准字符串函数.

You have to use regular expressions or standart string functions.

text = '''<script class="code" type="text/javascript">
    $(document).ready(function(){
    line1 = [['2009-02-23 10 AM', 5203], ['2009-02-08 10 AM', 3898], ['2009-02-09 10 AM', 4923], ['2009-02-22 10 AM', 3682], ['2009-02-21 10 AM', 3238], ['2009-02-20 10 AM', 4648]];
    options1 = {
    etc other text
      }
    });
    </script>'''

import re

re.findall("'([^']*)'", text)

结果:

['2009-02-23 10 AM',
 '2009-02-08 10 AM',
 '2009-02-09 10 AM',
 '2009-02-22 10 AM',
 '2009-02-21 10 AM',
 '2009-02-20 10 AM']

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