我认为最简单的解决方案是切换到 lxml 图书馆.在大多数情况下，您只需将导入从 import xml.etree.ElementTree as etree 更改为 from lxml import etree 或类似.

The easiest solution I think is switching to the lxml library. In most circumstances you can just change your import from import xml.etree.ElementTree as etree to from lxml import etree or similar.

然后您可以在序列化时使用 pretty_print 选项:

You can then use the pretty_print option when serializing:

tree.write(filename, pretty_print=True)

(也可在 etree.tostring 上找到)