我有一个 XML 文件,然后需要更新一些值。我的 XML 文件包含注释。我想在编写 XML 后保留注释,但它消失了。
这是我的 XML:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Data System -->
<process>
<!-- Student Name -->
<NAME source="hsfg" class="hshah" property="Name">
<VALUE type="string"></VALUE>
<VALUE type="None"></VALUE>
</NAME>
<!-- Exercise Number -->
<number source="hsfg" class="hgdgf" property="gagfa">
<VALUE type="string"></VALUE>
<VALUE type="None"></VALUE>
</number>
<!-- Exam ID -->
<id source="hsfg" class="gfdg" property="fadg">
<VALUE type="string"></VALUE>
<VALUE type="None"></VALUE>
</id>
</process>
这是我需要更新的值
<!-- Student Name -->
<NAME source="hsfg" class="hshah" property="Name">
<VALUE type="string"></VALUE>
<VALUE type="None"></VALUE>
</NAME>
变成这样:
<!-- Student Name -->
<NAME source="hsfg" class="hshah" property="Name">
<VALUE type="string">new value</VALUE>
<VALUE type="None"></VALUE>
</NAME>
My code:
read = ET.parse('test.xml').getroot()
parent = read.find('.//NAME[@property="Name"]')
change = parent.find('VALUE[@type="string"]')
change.text = 'new value'
tree = ET.ElementTree(read)
tree.write("test.xml")
test.xml 文件的输出如下。评论和<?xml version="1.0" encoding="UTF-8"?>
消失了。
<process>
<NAME source="hsfg" class="hshah" property="Name">
<VALUE type="string">new value</VALUE>
<VALUE type="None" />
</NAME>
<number source="hsfg" class="hgdgf" property="gagfa">
<VALUE type="string" />
<VALUE type="None" />
</number>
<id source="hsfg" class="gfdg" property="fadg">
<VALUE type="string" />
<VALUE type="None" />
</id>
</process>
但我的期望输出、结构和注释仍然与之前相同,更新值如下:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Data System -->
<process>
<!-- Student Name -->
<NAME source="hsfg" class="hshah" property="Name">
<VALUE type="string">new value</VALUE>
<VALUE type="None"></VALUE>
</NAME>
<!-- Exercise Number -->
<number source="hsfg" class="hgdgf" property="gagfa">
<VALUE type="string"></VALUE>
<VALUE type="None"></VALUE>
</number>
<!-- Exam ID -->
<id source="hsfg" class="gfdg" property="fadg">
<VALUE type="string"></VALUE>
<VALUE type="None"></VALUE>
</id>
</process>