使用Etree Python提取XML元素
使用Etree Python提取XML元素
提问于 2018-03-06 19:35:33
在我的XML文件中，我有一些窗口标记，我想从这些标记中逐个从窗口名称中提取出视点的名称。
我的XML文件：
<windows>
<window class='dashboard' maximized='true' name='Dashboard 1'>
<viewpoints>
<viewpoint name='Category sheet'>
<zoom type='entire-view' />
</viewpoint>
<viewpoint name='Segment Sheet'>
<zoom type='entire-view' />
<selection-collection>
<tuple-selection>
<tuple-reference>
<tuple-descriptor>
<pane-descriptor>
<x-fields>
<field>[federated.1y3sjvb0pyupci132wn6b0wdgpc3].[none:Segment:nk]</field>
</x-fields>
<y-fields>
<field>[federated.1y3sjvb0pyupci132wn6b0wdgpc3].[sum:Sales:qk]</field>
</y-fields>
</pane-descriptor>
<columns>
<field>[federated.1y3sjvb0pyupci132wn6b0wdgpc3].[none:Segment:nk]</field>
<field>[federated.1y3sjvb0pyupci132wn6b0wdgpc3].[sum:Sales:qk]</field>
</columns>
</tuple-descriptor>
<tuple>
<value>"Corporate"</value>
<value>706146.36680000008</value>
</tuple>
</tuple-reference>
</tuple-selection>
</selection-collection>
</viewpoint>
<viewpoint name='Subcat Sheet'>
<zoom type='entire-view' />
</viewpoint>
<viewpoint name='sub cat grp Sheet'>
<zoom type='entire-view' />
</viewpoint>
</viewpoints>
<active id='4' />
</window>
<window class='dashboard' name='Story 1'>
<viewpoints />
<active id='4' />
</window>
</windows>我的尝试：
for win in root.findall('./windows/window'):
dashwins = win.find('window[@class="dashboard"]')
if dashwins != None:
print(dashwins.attrib)
for i in dashwins:
view1 = i.find('viewpoint')
for j in view1:
print(j.get('name'))- 只有当窗口标记中存在class=dashboard属性时，才需要提取视点名称。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-03-06 20:44:40
您可以扩展xpath表达式以获取目标window元素下的所有window元素，然后询问它们的name属性。
>>> from xml.etree import ElementTree
>>> tree = ElementTree.parse('sanu.xml')
>>> for el in tree.findall('.//window[@class="dashboard"]//viewpoint'):
... el.attrib['name']
...
'Category sheet'
'Segment Sheet'
'Subcat Sheet'
'sub cat grp Sheet'页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/49138657
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