从标签beautifulsoup python中提取类名

Question

我有以下HTML代码：

    <td class="image">
      <a href="/target/tt0111161/" title="Target Text 1">
       <img alt="target img" height="74" src="img src url" title="image title" width="54"/>
      </a>
     </td>
     <td class="title">
      <span class="wlb_wrapper" data-caller-name="search" data-size="small" data-tconst="tt0111161">
      </span>
      <a href="/target/tt0111161/">
       Other Text
      </a>
      <span class="year_type">
       (2013)
      </span>

我正在尝试使用漂亮的汤将某些元素解析为制表符分隔的文件。我得到了很大的帮助，并且有：

for td in soup.select('td.title'):
 span = td.select('span.wlb_wrapper')
 if span:
     print span[0].get('data-tconst') # To get `tt0082971`

现在，我想获取“目标文本1”。

我已经尝试过类似上述内容的操作，例如：

for td in soup.select('td.image'): #trying to select the <td class="image"> tag
img = td.select('a.title') #from inside td I now try to look inside the a tag that also has the word title
if img:
    print img[2].get('title') #if it finds anything, then I want to return the text in class 'title'

Answer 1

如果您试图根据类获得不同的 td（即 td class="image" 和 td class="title"，您可以使用 Beautiful Soup 作为字典来获取不同的类。

这将在表中找到所有 td class="image"。

from bs4 import BeautifulSoup

page = """
<table>
    <tr>
        <td class="image">
           <a href="/target/tt0111161/" title="Target Text 1">
            <img alt="target img" height="74" src="img src url" title="image title" width="54"/>
           </a>
          </td>
          <td class="title">
           <span class="wlb_wrapper" data-caller-name="search" data-size="small" data-tconst="tt0111161">
           </span>
           <a href="/target/tt0111161/">
            Other Text
           </a>
           <span class="year_type">
            (2013)
           </span>
        </td>
    </tr>
</table>
"""
soup = BeautifulSoup(page)
tbl = soup.find('table')
rows = tbl.findAll('tr')
for row in rows:
    cols = row.find_all('td')
    for col in cols:
        if col.has_attr('class') and col['class'][0] == 'image':
            hrefs = col.find_all('a')
            for href in hrefs:
                print href.get('title')

        elif col.has_attr('class') and col['class'][0] == 'title':
            spans = col.find_all('span')
            for span in spans:
                if span.has_attr('class') and span['class'][0] == 'wlb_wrapper':
                    print span.get('data-tconst')