Question

我有一个XML文件，结构如下：

<Thread THREAD_SEQUENCE="Q268_R16">
<RelQuestion RELQ_ID="Q268_R16">
<RelQSubject>Best Bank.</RelQSubject>
<RelQBody>Hi ti all QL's; What bank you are using? and why? Are you using this bank just because it has an affiliate at home? Regards;</RelQBody>
</RelQuestion>
</Thread>

在XML文件中，有244个RelQBody标记。我想要做的是获取RelQBody标签内的文本。我尝试过这样的事情：

import xml.dom.minidom
dom = xml.dom.minidom.parse("test.xml")
data = dom.documentElement

question = data.getElementsByTagName("RelQBody")
i=1
for q in question:
    print("%i. %s" % (i, q.childNodes[0].data))
    i = i+1

但我一直在说错误

Traceback (most recent call last):
File "C:\Users\Administrator\Documents\python\test.py", line 13, in <module>
  print("%i. %s" % (i, q.childNodes[0].data))
IndexError: list index out of range

然而，当我尝试这段代码时：

import xml.dom.minidom
dom = xml.dom.minidom.parse("test.xml")
data = dom.documentElement

question = data.getElementsByTagName("RelQBody")
i=1
for q in question:
    print("%i" % i)
    i = i+1

我的号码是1-244。它与数据集中的完全相同。

那么为什么当我用字符串打印出来并没有字符串时会有区别？也许有人可以告诉我哪个部分我做错了？我是Python的新手，所以任何帮助都将受到赞赏。感谢。

Answer 1

我猜怪是class in <tr> tag，因为其中一个节点可能有0个子节点，调用$no = 1; while ($row = mysqli_fetch_array($result)) { $month1=strtotime($row['month']); $month=date('m-Y',$month1); $store_name=$row['store_name']; $netamt1=$row['netamt']; $netamt11=number_format($netamt1,2); $usage1=$row['monusage']; $usage11=number_format($usage1,2); $answer=$usage1/$netamt1*1000; $answer1=number_format($answer,2); $duh = number_format($row['duh'],2); $total+=$duh; $avg=$total/$no; echo "<tr class='y_n';>"; echo "<td>".$no."</td>"; echo "<td>".$store_name."</td>"; echo "<td>".$date2111."</td>"; echo "<td>".$netamt11."</td>"; echo "<td>".$usage11."</td>"; $no++; echo "<td>".$duh."</td>"; echo "</tr>"; } ?> <script type="text/javascript"> $('#table_id tr.y_n td').each(function() { if ($(this).text() >=<?=number_format($avg,2)?>) { $(this).parent().css('background-color', '#fc9c9c'); } else $(this).parent().css('background-color', '#e5f5ff'); }); </script> </tbody> <tfoot> <tr> <th colspan="5">TOTAL</th> <th><?=($total)?></th> </tr> <tr> <th colspan="5">AVERAGE</th> <th><?=number_format($avg,4)?></th></tr> <tr> <th colspan="6"><center><?php echo $actionstatus?></center></th> </tr> </tfoot> </table>会导致IndexError

所以试试这个：

childNodes[0]

Answer 2

import xml.dom.minidom
dom = xml.dom.minidom.parse("test.xml")
data = dom.documentElement

question = data.getElementsByTagName("RelQBody")
for i,q in enumerate(question):
    if len(q.childNodes) > 0:
        print("%i. %s" % (i+1, q.childNodes[0].data))

阅读XML文件的Python不断收到错误＆＃34;列表索引超出范围＆＃34;

2 个答案: