python用空格写xml [英] python write xml with spacing

问题描述

有没有办法使用不在一行中的 XML 库在 python 中编写 XML 文件

Is there a way to write XML files in python using the XML library that aren't in one line

我有这个代码:

import xml.etree.ElementTree as ET
perm = ET.Element('perm')
connect = ET.SubElement(perm, 'connect').text="*"
download = ET.SubElement(perm, 'download').text="*"
upload = ET.SubElement(perm, 'upload').text="*"
view = ET.SubElement(perm, 'view').text="*"
delFile = ET.SubElement(perm, 'delete_file').text="*"
delDir = ET.SubElement(perm, 'delete_dir').text="*"
rename = ET.SubElement(perm, 'rename').text="*"
create_dir = ET.SubElement(perm, 'create_dir').text="*"
sizeof = ET.SubElement(perm, 'sizeof').text="*"

tree = ET.ElementTree(perm)
tree.write('permission-backup.xml')

但是 xml 看起来像这样:

but the xml looks like this:

<perm><connect>*</connect><download>*</download><upload>*</upload><view>*</view><delete_file>*</delete_file><delete_dir>*</delete_dir><rename>*</rename><create_dir>*</create_dir><sizeof>*</sizeof></perm>

有没有办法让它在不打开文件并重新格式化的情况下写入多行而不是一行?

is there any way to make it write multiple lines instead of one without opening the file and re-formatting it?

推荐答案

解决此问题的一种方法是使用 lxml 而不是 xml.它是一种替代品，因此您只需要将 import 语句更改为

One way to fix this is to use lxml instead of xml. It is a drop-in replacement so you only have to change your import statement to

from lxml import etree as ET

和你的输出语句

print(ET.tostring(tree,pretty_print=True),file=open('permission-backup.xml','w'))

这是一个 Python 3 风格的 print() 函数调用，所以你需要做

This is a Python 3 style print() function call so you need to do

from __future__ import print_function

如果你还没有.

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