元素树：插入方法和糟糕的缩进输出

Question

我使用这段代码在原来的.xml中插入一个新的节点（文件取自ElementTree文档）。

import xml.etree.ElementTree as ET

tree = ET.parse('country_data.xml')
root = tree.getroot()


my_xml = """
    <country name="Togo">
        <rank updated="yes">2</rank>
        <year>2000</year>
        <gdppc>3</gdppc>
        <neighbor name="Austria" direction="E"/>
        <neighbor name="Switzerland" direction="W"/>
    </country>
"""


new_contry = ET.fromstring(my_xml)
root.insert(1,new_contry)

tree.write('essai_insert_output.xml')

root = tree.getroot()

但结果破坏了新节点和下一个节点之间的正确缩进。

<data>
    <country name="Liechtenstein">
        <rank>1</rank>
        <year>2008</year>
        <gdppc>141100</gdppc>
        <neighbor name="Austria" direction="E" />
        <neighbor name="Switzerland" direction="W" />
    </country>
    <country name="Togo">
        <rank updated="yes">2</rank>
        <year>2000</year>
        <gdppc>3</gdppc>
        <neighbor name="Austria" direction="E" />
        <neighbor name="Switzerland" direction="W" />
    </country><country name="Singapore">
        <rank>4</rank>
        <year>2011</year>
        <gdppc>59900</gdppc>
        <neighbor name="Malaysia" direction="N" />
    </country>
    <country name="Panama">
        <rank>68</rank>
        <year>2011</year>
        <gdppc>13600</gdppc>
        <neighbor name="Costa Rica" direction="W" />
        <neighbor name="Colombia" direction="E" />
    </country>
</data>

新节点 <country name="Togo">是很好的位置，但在它的最后，我们有这样的碰撞。

</country><country name="Singapore">

如何解决这个问题？

Answer 1

格式化输出。

from xml.dom import minidom

dom = minidom.parse('country_data.xml')
with open('dom_write.xml', 'w', encoding='UTF-8') as fh:
    dom.writexml(fh, indent='', addindent='\t', newl='', encoding='UTF-8')