Minidom——提取子节点

Question

我有一些 XML:

<sentence id="1086415:2">
 <text> and there is much tasty food, all of it fresh and continually refilled.</text>
  <Opinions>
   <Opinion to="31" from="27" polarity="positive" category="FOOD#STYLE_OPTIONS" target="food"/>
   <Opinion to="31" from="27" polarity="positive" category="FOOD#QUALITY" target="food"/>
   <Opinion to="31" from="27" polarity="positive" category="FOOD#PRICES" target="food"/>
  </Opinions>
</sentence>
<sentence id="1086415:3">
 <text>I am not a vegetarian but, almost all the dishes were great.</text>
  <Opinions>
   <Opinion to="48" from="42" polarity="positive" category="FOOD#QUALITY" target="dishes"/>
  </Opinions>

我正在尝试提取 Opinions 标签中的所有内容，以将其与元组中的文本结合起来。我想知道如何用 minidom 做到这一点？目前意见returns'\n'.

from xml.dom import minidom
xmldoc = minidom.parse("ABSA16_Restaurants_Train_SB1_v2.xml")
sentences = xmldoc.getElementsByTagName("sentence")
for sentence in sentences:
   text = sentence.getElementsByTagName("text")[0].firstChild.data
   opinion = sentence.getElementsByTagName("Opinions")[0].firstChild.data

谢谢。

Answer 1

您确定需要minidom吗？

来自文档：

Users who are not already proficient with the DOM should consider using the xml.etree.ElementTree module for their XML processing instead.

没有充分的理由不要浪费您的时间并使用标准 python xml.etree.ElementTree，它的手册中有足够的示例来解决您的任务。如果遇到问题，请随时在评论中提问。

除此之外，如果您需要经常使用 XML，我建议 third-party lxml，它是包含一些电池的更强大的工具。

Minidom——提取子节点

Minidom - extracting sub-nodes

python

xml

minidom