[英]python xml.etree.ElementTree append to subelement
I am trying to use xml.etree.ElementTree to parse a xml file, find a specific tag, append a child to that tag, append another child to the newly created tag and add text to the latter child. 我正在尝试使用xml.etree.ElementTree来解析xml文件,查找特定标记,将子项附加到该标记,将另一个子项附加到新创建的标记并将文本添加到后一个子项。
My XML: 我的XML:
<root>
<a>
<b>
<c>text1</c>
</b>
<b>
<c>text2</c>
</b>
</a>
</root>
Desired XML: 期望的XML:
<root>
<a>
<b>
<c>text1</c>
</b>
<b>
<c>text2</c>
</b>
<b>
<c>text3</c>
</b>
</a>
</root>
Current code: 当前代码:
import xml.etree.ElementTree as ET
tree = ET.parse('test.xml')
root = tree.getroot()
for x in root.iter():
if (x.tag == 'a'):
ET.SubElement(x, 'b')
ET.SubElement(x, 'c')
#add text
This seems to work except 'c' appends as a child of 'a' rather then 'b' 这似乎有效,除了'c'作为'a'而不是'b'的孩子。
Like so: 像这样:
<root>
<a>
<b>
<c>test1</c>
</b>
<b>
<c>test2</c>
</b>
<b /><c/></a>
</root>
Also, how do I add text to the newly created element 'c'? 另外,如何将文本添加到新创建的元素“c”中? I could iterate through until I find the a tag 'c' that has no text but there must be a better way.
我可以迭代直到找到没有文字的标签'c',但必须有更好的方法。
You need to specify b
as a parent element for c
. 您需要将
b
指定为c
的父元素。
Also, for getting the a
tag you don't need a loop - just take the root ( a
). 另外,为了获得
a
标签你不需要循环 - 只需取根( a
)。
import xml.etree.ElementTree as ET
tree = ET.parse('test.xml')
root = tree.getroot()
a = root.find('a')
b = ET.SubElement(a, 'b')
c = ET.SubElement(b, 'c')
c.text = 'text3'
print ET.tostring(root)
prints: 打印:
<root>
<a>
<b>
<c>text1</c>
</b>
<b>
<c>text2</c>
</b>
<b>
<c>text3</c>
</b>
</a>
</root>
I prefer to define my own function for adding text: 我更喜欢定义自己添加文本的功能:
def SubElementWithText(parent, tag, text):
attrib = {}
element = parent.makeelement(tag, attrib)
parent.append(element)
element.text = text
return element
Which then is very convenient to use as: 这样使用起来非常方便:
import xml.etree.ElementTree as ET
tree = ET.parse('test.xml')
root = tree.getroot()
a = root.find('a')
b = ET.SubElement(a, 'b')
c = SubElementWithText(b, 'c', 'text3')
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