Use xml.etree.elementtree to print nicely formatted xml files [duplicate]

问题

This question already has an answer here:

Pretty printing XML in Python 21 answers

I am trying to use xml.etree.elementtree to write out xml files with Python. The issue is that they keep getting generated in a single line. I want to be able to easily reference them so if its possible I would really like to be able to have the written out cleanly.

This is what I am getting

<Language><En><Port>Port</Port><UserName>UserName</UserName></En><Ch><Port>IP地址</Port><UserName>用户名称</UserName></Ch></Language>

This is what I would like to see.

<Language>
    <En>
        <Port>Port</Port>
        <UserName>UserName</UserName>
    </En>
    <Ch>
        <Port>IP地址</Port>
        <UserName>用户名称</UserName>
    </Ch>
</Language>

回答1:

You can use the function toprettyxml() from xml.dom.minidom in order to do that:

def prettify(elem):
    """Return a pretty-printed XML string for the Element.
    """
    rough_string = ElementTree.tostring(elem, 'utf-8')
    reparsed = minidom.parseString(rough_string)
    return reparsed.toprettyxml(indent="\t")

The idea is to print your Element in a string, parse it using minidom and convert it again in XML using the toprettyxml function.

Source: http://pymotw.com/2/xml/etree/ElementTree/create.html

回答2:

You could use the library lxml (Note top level link is now spam) , which is a superset of ElementTree. Its tostring() method includes a parameter pretty_print - for example:

>>> print(etree.tostring(root, pretty_print=True))
<root>
  <child1/>
  <child2/>
  <child3/>
</root>

来源：https://stackoverflow.com/questions/17402323/use-xml-etree-elementtree-to-print-nicely-formatted-xml-files

标签

python

xml

elementtree