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我正在尝试学习如何抓取网络，但在让我的代码正常工作时遇到了一些问题。我想从下面的代码中提取的数字是 77.80。我遇到的问题是找到足够独特的东西来找到信息（地点）。你能帮我写正确的代码吗？提前致谢！

    </td>

            <td class="small">&nbsp;&nbsp;</td>

                    <td align="center" nowrap  valign="center" class="small">
                    <a alt="Utvald" class="small" href="javascript:QT('/se/skandia/funds/chosen.aspx?tab=5&cid=0P0000T35O&lang=SV&curiso=SEK&country=SE&clientattributes=8&lastpage=Sök fond&LastPageURL=/se/skandia/quickrank/index.aspx?tab=RSLTS|lang=SV|univ=SE1|country=SE|curiso=SEK|mec=|cat=-1|search=|sortby=Custom_4|sortorder=ASC|PageNo=1|Firstletter=','0P0000T35O','600')"  onmouseout="status=''; return true"><img src="../read/im/sigillsvartsmall_FFFFFF.gif" border="0" alt="Utvald av Skandia" height="12" width="9"/></a>
                </td>

            <td class="small">&nbsp;&nbsp;</td>

                <td align="right" nowrap  valign="top" class="small">
                    77.80                           
                </td>

            <td class="small">&nbsp;&nbsp;</td>

                <td align="right" nowrap  valign="top" class="small">
                    <!--<img src="../read/im/valueSEK.gif" align="texttop" height="10" width="22">-->
                    SEK
                </td>

            <td class="small">&nbsp;&nbsp;</td>

                <td align="right" nowrap  valign="top" class="small">
                    1.4
                </td>

            <td class="small">&nbsp;&nbsp;</td>

                <td align="right" nowrap  valign="top" class="small">
                    0.5
                </td>

            <td class="small">&nbsp;&nbsp;</td>

                <td align="right" nowrap  valign="top" class="small">
                    2.7
                </td>

            <td class="small">&nbsp;&nbsp;</td>

                <td align="right" nowrap  valign="top" class="small">
                    6.6
                </td>
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1 回答 1

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这是查找所需文本的方法。这只是寻找第一个td有class='small'和valign='top'。

soup = BeautifulSoup(s)
tds = soup.find_all('td', attrs={'class': 'small', 'valign': 'top'})
the_td = tds[0].text.strip()
于 2012-11-02T19:38:05.977 回答