我有一个我怀疑是相当直接的问题。我有以下类型的页面，我想从中收集最后一个表中的信息（如果你一直向下滚动它是标有“Procedure”的框中的那个）：
http://www.europarl.europa.eu/sides/getDoc.do?type=REPORT&mode=XML&reference=A7-2010-2&language=EN
我要刮的表的html看起来像这样：
<tbody><tr class="doc_title">
<td style="background-image: url("/img/struct/navigation/gradient_blue.gif");" align="left" valign="top"><img src="/img/struct/functional/arrow_title_doc.gif" alt="" align="absmiddle" border="0" height="14" width="8"> <span style="font-weight: bold;">PROCEDURE</span></td><td style="background-image: url("/img/struct/navigation/gradient_blue.gif");" align="right" valign="top">
<table border="0" cellpadding="3" cellspacing="0" width="50">
<tbody><tr><td align="center"><a href="#top"><img src="/img/struct/functional/top_doc.gif" alt="" border="0" height="16" width="16"></a></td><td align="center"><img src="/img/struct/navigation/spacer.gif" alt="" border="0" height="10" width="15"></td><td align="center"><a href="#title2"><img src="/img/struct/functional/sort_up.gif" alt="" border="0" height="10" width="15"></a></td></tr></tbody></table></td></tr>
<tr class="contents" valign="top"><td colspan="2">
<p></p><table style="border-collapse: collapse; width: 481.85pt;" align="center" cellspacing="0">
<tbody><tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Title</span></p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 61.76%;" rowspan="1" colspan="7">
<p style="">Mutual assistance for the recovery of claims relating to taxes, duties and other measures</p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">References</span></p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 61.76%;" rowspan="1" colspan="7">
<p style=""><a href="http://ec.europa.eu/prelex/liste_resultats.cfm?CL=en&ReqId=0&DocType=COM&DocYear=2009&DocNum=0028">COM(2009)0028</a> – C6-0061/2009 – <a href="/oeil/FindByProcnum.do?lang=en&procnum=CNS/2009/0007">2009/0007(CNS)</a></p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Date of consulting Parliament</span></p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 61.76%;" rowspan="1" colspan="7">
<p style="">16.2.2009</p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Committee responsible</span></p>
<p style=""> Date announced in plenary</p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 61.76%;" rowspan="1" colspan="7">
<p style="">ECON</p>
<p style="">19.10.2009</p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0pt 0.75pt; border-style: solid solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Committee(s) asked for opinion(s)</span></p>
<p style=""> Date announced in plenary</p>
</td>
<td style="border-width: 1pt 0pt 0pt; border-style: solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.88%;" rowspan="1" colspan="2">
<p style="">CONT</p>
<p style="">19.10.2009</p>
</td>
<td style="border-width: 1pt 0pt 0pt; border-style: solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style="">JURI</p>
<p style="">19.10.2009</p>
</td>
<td style="border-width: 1pt 0pt 0pt; border-style: solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style=""> </p>
</td>
<td style="border-width: 0.75pt 1pt 0pt 0pt; border-style: solid solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="1">
<p style=""> </p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Not delivering opinions</span></p>
<p style=""> Date of decision</p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.88%;" rowspan="1" colspan="2">
<p style="">CONT</p>
<p style="">1.10.2009</p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style="">JURI</p>
<p style="">5.10.2009</p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style=""> </p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0pt; border-style: solid solid solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="1">
<p style=""> </p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Rapporteur(s)</span></p>
<p style=""> Date appointed</p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 20.59%;" rowspan="1" colspan="3">
<p style="">Theodor Dumitru Stolojan</p>
<p style="">21.7.2009</p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 20.59%;" rowspan="1" colspan="2">
<p style=""> </p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0pt; border-style: solid solid solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 20.59%;" rowspan="1" colspan="2">
<p style=""> </p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0pt 0.75pt; border-style: solid solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Discussed in committee</span></p>
</td>
<td style="border-width: 1pt 0pt 0pt; border-style: solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.88%;" rowspan="1" colspan="2">
<p style="">10.11.2009</p>
</td>
<td style="border-width: 1pt 0pt 0pt; border-style: solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style="">1.12.2009</p>
</td>
<td style="border-width: 1pt 0pt 0pt; border-style: solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style="">21.1.2010</p>
</td>
<td style="border-width: 0.75pt 1pt 0pt 0pt; border-style: solid solid none none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="1">
<p style=""> </p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Date adopted</span></p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.88%;" rowspan="1" colspan="2">
<p style="">27.1.2010</p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style=""> </p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="2">
<p style=""> </p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0pt; border-style: solid solid solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 15.3%;" rowspan="1" colspan="1">
<p style=""> </p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Result of final vote</span></p>
</td>
<td style="border-width: 0.75pt 0pt 1pt; border-style: solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 12.94%;" rowspan="1" colspan="1">
<p style="">+:</p>
<p style="">–:</p>
<p style="">0:</p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0pt; border-style: solid solid solid none; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 48.82%;" rowspan="1" colspan="6">
<p style="">39</p>
<p style="">0</p>
<p style="">1</p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Members present for the final vote</span></p>
</td>
<td style="border-width: 0.75pt 1pt 0.75pt 0.75pt; border-style: solid; border-color: rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 61.76%;" rowspan="1" colspan="7">
<p style="">Burkhard Balz, Sharon Bowles, Udo Bullmann, Pascal Canfin, Nikolaos Chountis, George Sabin Cutaş, Leonardo Domenici, Derk Jan Eppink, Markus Ferber, Elisa Ferreira, Vicky Ford, José Manuel García-Margallo y Marfil, Jean-Paul Gauzès, Sylvie Goulard, Enikő Győri, Liem Hoang Ngoc, Eva Joly, Othmar Karas, Wolf Klinz, Jürgen Klute, Werner Langen, Astrid Lulling, Arlene McCarthy, Ivari Padar, Alfredo Pallone, Anni Podimata, Antolín Sánchez Presedo, Olle Schmidt, Edward Scicluna, Peter Simon, Peter Skinner, Theodor Dumitru Stolojan, Ivo Strejček, Kay Swinburne, Marianne Thyssen, Ramon Tremosa i Balcells</p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border-left: 0.75pt solid rgb(0, 0, 0); border-right: 1pt solid rgb(0, 0, 0); border-top: 0.75pt solid rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 38.24%;" rowspan="1" colspan="1">
<p style=""><span style="font-weight: bold;">Substitute(s) present for the final vote</span></p>
</td>
<td style="border-left: 0.75pt solid rgb(0, 0, 0); border-right: 1pt solid rgb(0, 0, 0); border-top: 0.75pt solid rgb(0, 0, 0); padding: 2.8pt 5.1pt; vertical-align: top; width: 61.76%;" rowspan="1" colspan="7">
<p style="">Marta Andreasen, Sophie Briard Auconie, David Casa, Danuta Jazłowiecka, Arturs Krišjānis Kariņš, Philippe Lamberts, Andreas Schwab</p>
</td>
<td style="" rowspan="1" colspan="1"></td></tr>
<tr style="">
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 38.24%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 12.94%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 2.94%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 4.71%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 10.58%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 10%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 5.29%;" rowspan="1" colspan="1"></td>
<td style="border: medium none; margin: 0pt; padding: 0pt; width: 15.3%;" rowspan="1" colspan="1"></td>
<td style="" rowspan="1" colspan="1"></td></tr>
</tbody></table>
</td></tr>
</tbody>
我面临的问题是表的标签没有标识符（据我所知），所以我不知道如何选择这一个表并从中获取信息。到目前为止，我一直在使用BeautifilSoup从网站上获取其他信息，但我对如何刮掉这一张表感到茫然。
如果有人能告诉我如何继续，我将非常感激！
亲切的问候，
托马斯
答案 0 :(得分：3)
如果你有点聪明，你可以通过其他属性找到元素。我把这个镜头用于抓取你的数据，它可能不是最好的 - 但它会让你接近。
我注意到的第一件事是你在第二次出现“PROCEDURE”这个词后肯定想要数据（首先是链接，第二个是标题）。所以，我分开了：
data = html.split("PROCEDURE", 2)[2]
然后，我使用<td>
rowspan=1个标签
bs = BeautifulSoup.BeautifulSoup(data)
tds = bs.findAll("td", { "rowspan": 1 })
越来越近了......
>>> tds[0].text
u'Title'
>>> tds[1].text
u'Mutual assistance for the recovery of claims relating to taxes, duties and other measures'
>>> tds[3].text
u'References'
>>> tds[4].text
u'COM(2009)00282009/0007(CNS)2009 a>'
请注意，我在2中跳过了索引tds，因为它们使用了间隔符或其他内容（它是空的）。无论如何，这是一个开始。我在BeautifulSoup中找到的真正诀窍就是只将它提供给您所知道的区域中的数据，因为这样可以减少浏览量。它也以接受不好看的输入而自豪，所以不要害怕把垃圾送到垃圾场。
我在元素列表中走得更远，但并不完美。您需要优化搜索，因为它们在值<td>内有<td>个元素。