[英]Python edit xml with minidom
Try as I might I just not getting this to work. 尽我所能,试试吧。 I have an xml file:
我有一个xml文件:
: :
I need to change the values of xyz and add a name to the name tag. 我需要更改xyz的值并将名称添加到名称标签。 I just can't seem to figure out how to get there.
我似乎无法弄清楚如何到达那里。
my code: 我的代码:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from xml.dom import minidom
xmldoc = minidom.parse('example.xml')
sensorList = xmldoc.getElementsByTagName('sensor')
for sensor in sensorList:
sensor.firstChild.nodeValue = "test"
sensor.nextSibling.nodeValue # skip over
sensor.nextSibling.nodeValue = "1"
sensor.nextSibling.nodeValue = "2"
sensor.nextSibling.nodeValue = "3"
#print sensor.toxml()
xml_file_handle = open('example.xml' , 'wb')
xmldoc.writexml(xml_file_handle)
xml_file_handle.close()
I have tried several variations of sensor.childNodes[0].data or value. 我尝试了sensor.childNodes [0] .data或value的几种变体。 This returns error for no attribute.
这将返回没有属性的错误。 If I use print sensor.toxml() everything is as it should be.
如果我使用print sensor.toxml(),一切都应该是正确的。
when I run this code I do get the test to print , but its inserted right after the "sensor" tag and not the "name" tag. 当我运行这段代码时,我确实可以打印测试,但是它是在“ sensor”标签而不是“ name”标签之后插入的。 Simple syntax issue I know, but I'm just not finding it in the docs.
我知道简单的语法问题,但我只是在文档中找不到它。
Very appreciative for the help. 非常感谢您的帮助。
I could not find a solution with minidom. 我找不到最小的解决方案。
I switched to ElementTree and was able to trip over a solution. 我切换到ElementTree并能够解决一个问题。 What I actually needed to do was read in a .csv file and rewrite the xml with the values from the second file, but that turned out to be trivial compared to getting the xml overwritten.
我实际上需要做的是读入一个.csv文件,并用第二个文件中的值重写xml,但是与覆盖xml相比,这确实是微不足道的。
solution from previous: 以前的解决方案:
#!/usr/bin/python
import sys
import xml.etree.ElementTree as ET
xmlFile = sys.argv[1]
# Xml parsing.
tree = ET.parse(xmlFile)
root = tree.getroot()
#Access the nodes you want by treating root as an array of arrays
# roots children = root[x]
# roots children's children root[x][y]etc
#The array of sensors
sensors = root[1]
for sensor in sensors:
#Access all of sensors children the same way as root.
sensor[0].text = 'test'
sensor[3].text = '1'
sensor[4].text = '2'
sensor[5].text = '3'
#Open the xmlfile and rewrite it.
xmlFileHandle = open(xmlFile,'wb')
xmlFileHandle.write('<?xml version="1.0" encoding="UTF-8"?> \n' + ET.tostring(root))
xmlFileHandle.close()
Notice the top line of the xml boiler plate needs to be replaced manually. 请注意,需要手动替换xml样板的顶行。 Also you either need to create a custom method to clean prefix name spaces <ns0: tagname > or remove the schema before processing and replace, depending on what your needs are.
另外,您还需要创建一个自定义方法来清理前缀名称空间<ns0:tagname>,或者在处理和替换之前删除架构,具体取决于您的需求。 some people want the prefixes.
有些人想要前缀。
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