Python Beautifulsoup HTML表解析--只能获取最后一行？

我有一个简单的HTML表要解析，但不知何故，Beautifulsoup只能从最后一行获取结果。我想知道是否有人会看看这是怎么回事。因此，我已经从HTML表中创建了rows对象：

 <table class='participants-table'>
    <thead>
      <tr>
          <th data-field="name" class="sort-direction-toggle name">Name</th>
          <th data-field="type" class="sort-direction-toggle type active-sort asc">Type</th>
          <th data-field="sector" class="sort-direction-toggle sector">Sector</th>
          <th data-field="country" class="sort-direction-toggle country">Country</th>
          <th data-field="joined_on" class="sort-direction-toggle joined-on">Joined On</th>
      </tr>
    </thead>
    <tbody>
        <tr>
          <th class='name'><a href="/what-is-gc/participants/4479-Grontmij">Grontmij</a></th>
          <td class='type'>Company</td>
          <td class='sector'>General Industrials</td>
          <td class='country'>Netherlands</td>
          <td class='joined-on'>2000-09-20</td>
        </tr>
        <tr>
          <th class='name'><a href="/what-is-gc/participants/4492-Groupe-Bial">Groupe Bial</a></th>
          <td class='type'>Company</td>
          <td class='sector'>Pharmaceuticals &amp; Biotechnology</td>
          <td class='country'>Portugal</td>
          <td class='joined-on'>2004-02-19</td>
        </tr>
    </tbody>
  </table>

这将得到：

rows=[<tr>
 <th class="name"><a href="/what-is-gc/participants/4479-Grontmij">Grontmij</a></th>
 <td class="type">Company</td>
 <td class="sector">General Industrials</td>
 <td class="country">Netherlands</td>
 <td class="joined-on">2000-09-20</td>
 </tr>, <tr>
 <th class="name"><a href="/what-is-gc/participants/4492-Groupe-Bial">Groupe Bial</a></th>
 <td class="type">Company</td>
 <td class="sector">Pharmaceuticals &amp; Biotechnology</td>
 <td class="country">Portugal</td>
 <td class="joined-on">2004-02-19</td>
 </tr>]

我只能得到最后一个条目

cells=[<th class="name"><a href="/what-is-gc/participants/4492-Groupe-Bial">Groupe Bial</a></th>]

单元格=[]

---

发生了什么事？这是我第一次使用beautifulsoup，我想做的是将此表导出到CSV。非常感谢您的帮助！谢谢

如果您想在一个列表中重新分配所有th标记，您只需不断重新分配

cells=row。find_all（'th'）

，这样当您在循环外打印单元格时，您将只看到它上次分配给的内容，即上次tr中的最后一个th：

cells = []
for row in rows:
 cells.extend(row.find_all('th'))

此外，由于只有一个表，您可以使用“查找”：

如果要跳过thead行，可以使用css选择器：

单元格将为您提供：

[<th class="name"><a href="/what-is-gc/participants/4479-Grontmij">Grontmij</a></th>, <th class="name"><a href="/what-is-gc/participants/4492-Groupe-Bial">Groupe Bial</a></th>]

Name,Type,Sector,Country,Joined On,URL
Grontmij,Company,General Industrials,Netherlands,2000-09-20,/what-is-gc/participants/4479-Grontmij
Groupe Bial,Company,Pharmaceuticals & Biotechnology,Portugal,2004-02-19,/what-is-gc/participants/4492-Groupe-Bial

对于您的样本，您将获得：

[<th class="name"><a href="/what-is-gc/participants/4479-Grontmij">Grontmij</a></th>, <th class="name"><a href="/what-is-gc/participants/4492-Groupe-Bial">Groupe Bial</a></th>]

Name,Type,Sector,Country,Joined On,URL
Grontmij,Company,General Industrials,Netherlands,2000-09-20,/what-is-gc/participants/4479-Grontmij
Groupe Bial,Company,Pharmaceuticals & Biotechnology,Portugal,2004-02-19,/what-is-gc/participants/4492-Groupe-Bial

---

行是如何定义的？谢谢！提供了关于表和代码的更多详细信息。它正按照您的要求执行。您是否正在尝试获取所有的
td
？谢谢！这使它更接近我的目标！实际上，我想做的是将这个表导出为一个典型的CSV格式，并将“Name”和html链接作为单独的列。有没有办法用你刚才建议的“扩展”方法来实现这一点？谢谢@AD233，所以您基本上希望在csv中重新创建表？这是正确的，但我想将href链接提取为单独的列。谢谢好极了谢谢你的帮助！这确实很有趣
[<th class="name"><a href="/what-is-gc/participants/4479-Grontmij">Grontmij</a></th>, <th class="name"><a href="/what-is-gc/participants/4492-Groupe-Bial">Groupe Bial</a></th>]

import csv

soup = BeautifulSoup(html, "html.parser")

rows = soup.select("table.participants-table tr")

with open("data.csv", "w") as out:
    wr = csv.writer(out)
    wr.writerow([th.text for th in rows[0].find_all("th")] + ["URL"])

    for row in rows[1:]:
        wr.writerow([tag.text for tag in row.find_all()] + [row.th.a["href"]])

Name,Type,Sector,Country,Joined On,URL
Grontmij,Company,General Industrials,Netherlands,2000-09-20,/what-is-gc/participants/4479-Grontmij
Groupe Bial,Company,Pharmaceuticals & Biotechnology,Portugal,2004-02-19,/what-is-gc/participants/4492-Groupe-Bial