如何使用python将整个xml元素、属性和数据复制到具有特定id的新xml文件中
如何使用python将整个xml元素、属性和数据复制到具有特定id的新xml文件中
提问于 2021-07-30 06:50:09
下面的是我的示例xml源文件
<?xml version="1.0" encoding="UTF-8"?>
<catalog xmlns="http://www.sample.com/xml/catalog" catalog-id="sample-catalog">
<product product-id="214146430">
<online-flag>false</online-flag>
<online-flag site-id="sample_ae">false</online-flag>
<available-flag>true</available-flag>
<searchable-flag>true</searchable-flag>
<tax-class-id>standard</tax-class-id>
<page-attributes/>
<custom-attributes>
<custom-attribute attribute-id="adultsize">L</custom-attribute>
</custom-attributes>
</product>
<product product-id="214146123">
<online-flag>false</online-flag>
<online-flag site-id="sample_ae">false</online-flag>
<available-flag>true</available-flag>
<searchable-flag>true</searchable-flag>
<tax-class-id>standard</tax-class-id>
<page-attributes/>
<custom-attributes>
<custom-attribute attribute-id="adultsize">L</custom-attribute>
</custom-attributes>
</product>
</catalog>
我只想将产品id 214146430复制到New文件，它应该如下所示
<?xml version="1.0" encoding="UTF-8"?>
<catalog xmlns="http://www.sample.com/xml/catalog" catalog-id="sample-catalog">
<product product-id="214146430">
<online-flag>false</online-flag>
<online-flag site-id="sample_ae">false</online-flag>
<available-flag>true</available-flag>
<searchable-flag>true</searchable-flag>
<tax-class-id>standard</tax-class-id>
<page-attributes/>
<custom-attributes>
<custom-attribute attribute-id="adultsize">L</custom-attribute>
</custom-attributes>
</product>
</catalog>
我目前使用的是xml.etree.ElementTree和xml.dom，但没有运气，但它只是复制整个xml，这不是预期的。
下面是我的python代码
import xml.etree.ElementTree as ET
tree = ET.parse('Development/product_data_parser/emporio-imoprt-test.xml')
root = tree.getroot()
print(ET.tostring(root, encoding='utf8').decode('utf8'))
非常感谢您的帮助
回答 1
Stack Overflow用户
回答已采纳
发布于 2021-07-31 10:50:56
您可以这样做，尽管此解决方案可能特定于您的用例：-
import xml.etree.ElementTree as ET
import re
# A list of product IDs that you want to keep
keep = ['214146430']
# Figure out the namespace (used in tag matching later)
def getnamespace(root):
m = re.match(r'\{.*\}', root.tag)
return m.group(0) if m is not None else ''
tree = ET.parse('Development/product_data_parser/emporio-imoprt-test.xml')
root = tree.getroot()
namespace = getnamespace(root)
for elem in root.findall(f'{namespace}product'):
if elem.attrib['product-id'] not in keep:
root.remove(elem)
print(ET.tostring(root, encoding='utf8').decode('utf8'))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/68586581
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