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如何使用 Python 中的命名空間和屬性解析 XML?

[英]how to parse XML with namespace and attribute in Python?

嗨,我正在嘗試使用命名空間和屬性解析 xml。

我幾乎接近使用root.findall().get()

但是仍然難以從 xml 文件中獲取准確的值。

如何獲取 xml 屬性值?

輸入

<?xml version="1.0" encoding="UTF-8"?><message:GenericData 

xmlns:message="http://www.sdmx.org/resources/sdmxml/schemas/v2_1/message" 
xmlns:common="http://www.sdmx.org/resources/sdmxml/schemas/v2_1/common" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:generic="http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic" 
xsi:schemaLocation="http://www.sdmx.org/resources/sdmxml/schemas/v2_1/message https://sdw-
wsrest.ecb.europa.eu:443/vocabulary/sdmx/2_1/SDMXMessage.xsd 
http://www.sdmx.org/resources/sdmxml/schemas/v2_1/common https://sdw-
wsrest.ecb.europa.eu:443/vocabulary/sdmx/2_1/SDMXCommon.xsd 
http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic https://sdw-
wsrest.ecb.europa.eu:443/vocabulary/sdmx/2_1/SDMXDataGeneric.xsd">

<generic:Obs>
<generic:ObsDimension value="1999-01"/>
<generic:ObsValue value="0.7029125"/>
</generic:Obs>

<generic:Obs>
<generic:ObsDimension value="1999-02"/>
<generic:ObsValue value="0.688505"/>
</generic:Obs>

代碼

import xml.etree.ElementTree as ET
tree = ET.parse("file.xml")
root = tree.getroot()
for x in root.findall('.//'):
    print(x.tag, " ", x.get('value'))

Output

{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic}Obs   None
{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic}ObsDimension   1999-01
{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic}ObsValue   0.7029125
{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic}Obs   None
{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic}ObsDimension   1999-02
{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/data/generic}ObsValue   0.688505

預期輸出

1999-01  0.7029125

1999-02  0.688505

這個怎么樣:

for parent in root:                                                                 
    print('  '.join([child.get('value', "") for child in parent])) 

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