Pyrhon 解析 XML 删除 XML 标头

Question

我有以下代码来编辑 XML

import xml.etree.ElementTree as ET


data = b'<?xml version="1.0" encoding="UTF-8"?><aaaa version="1.0"><zzz>xxxxxx</zzz><bbbb>11111</bbbb></aaaa>'

root = ET.fromstring(data)

# Find the element to update
zzz_element = root.find('zzz')
if zzz_element is not None:
    # Update the element's text
    zzz_element.text = 'new_value'

# Convert the updated XML back to a string
updated_data = ET.tostring(root, encoding='utf-8', method='xml').decode()

print(updated_data)

该程序的输出是：

<aaaa version="1.0"><zzz>new_value</zzz><bbbb>11111</bbbb></aaaa>

为什么 XML 的 header 是：

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

退学？ 我可以编辑 xml，并将其解析为字符串并保留标题吗

Answer 1

您需要通过将

ElementTree.tostring

设置为

xml_declaration

来告知

True

您想要标题，请考虑以下简单示例

import xml.etree.ElementTree as ET
data = b'<?xml version="1.0" encoding="UTF-8"?><thing>abc</thing>'
root = ET.fromstring(data)
root.set("somekey", "somevalue")
updated_data = ET.tostring(root, encoding='utf-8', method='xml', xml_declaration=True).decode()
print(updated_data)

提供输出

<?xml version='1.0' encoding='utf-8'?>
<thing somekey="somevalue">abc</thing>