我有一个xml文件 - 这是一个片段..
<gmd_fileIdentifier>
<gco_CharacterString>{0328cb65-b564-495a-b17e-e49e04864ab7}</gco_CharacterString>
</gmd_fileIdentifier>
<gmd_identifier>
<gmd_RS_Identifier>
<gmd_authority gco_nilReason="missing" />
<gmd_code>
<gco_CharacterString>0000</gco_CharacterString>
</gmd_code>
<gmd_codeSpace xmlns:gml="http://www.opengis.net/gml" xmlns:msxsl="urn:schemas-microsoft-com:xslt">
<gco_CharacterString>test</gco_CharacterString>
</gmd_codeSpace>
</gmd_RS_Identifier>
</gmd_identifier>
我想要做的是将当前在标签中的0000的值更改为gmd_fileIdentifier字符串{0328cb65-b564-495a-b17e-e49e04864ab7}。
我可以使用以下python代码访问这些值,但是如何设置该值? 当前代码
import os, sys
from lxml import etree
myXML = r"D:\test.xml"
tree = etree.parse(myXML)
root = tree.getroot()
root.xpath("//gmd_fileIdentifier/gco_CharacterString/text()")
print fileID
code = root.xpath("//gmd_identifier/gmd_RS_Identifier/gmd_code/gco_CharacterString/text()")
print code
由于
答案 0 :(得分:17)
您必须查询整个节点而不是仅查询其内容:
code = root.xpath('//gmd_identifier/gmd_RS_Identifier/gmd_code/gco_CharacterString')
然后,如果匹配,只需替换其文本并保存回XML文件:
if code:
# Replaces <gco_CharacterString> text
code[0].text = '{0328cb65-b564-495a-b17e-e49e04864ab7}'
# Save back to the XML file
etree.ElementTree(root).write('D:\test.xml', pretty_print=True)
这就是全部! :)