问题描述
我正在尝试使用 xml.etree.ElementTree 来解析一个 xml 文件,找到一个特定的标签,将一个子附加到该标签,将另一个子附加到新创建的标签,并将文本添加到后一个子.
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.
我的 XML:
<root> <a> <b> <c>text1</c> </b> <b> <c>text2</c> </b> </a> </root>
所需的 XML:
<root> <a> <b> <c>text1</c> </b> <b> <c>text2</c> </b> <b> <c>text3</c> </b> </a> </root>
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
这似乎有效,除了 'c' 附加为 'a' 而不是 'b' 的子级
This seems to work except 'c' appends as a child of 'a' rather then 'b'
像这样:
<root> <a> <b> <c>test1</c> </b> <b> <c>test2</c> </b> <b /><c/></a> </root>
另外,如何向新创建的元素c"添加文本?我可以遍历,直到找到没有文本但必须有更好的方法的标签c".
Also, how do I add text to the newly created element 'c'? I could iterate through until I find the a tag 'c' that has no text but there must be a better way.
推荐答案
需要指定b作为c的父元素.
You need to specify b as a parent element for c.
此外,为了获取 a 标记,您不需要循环 - 只需获取根 (a).
Also, for getting the a tag you don't need a loop - just take the root (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)
打印:
<root> <a> <b> <c>text1</c> </b> <b> <c>text2</c> </b> <b> <c>text3</c> </b> </a> </root>