change xml element text using xml.etree.ElementTree

问题

Given a parsed xml string:

tree = xml.etree.ElementTree.fromstring(xml_string)

How would you change an element's text from 'hats':

>>> tree.find("path/to/element").text
>>> 'hats'

to 'cats'?

回答1:

Simply set the .text attribute value:

In [1]: import xml.etree.ElementTree as ET

In [2]: root = ET.fromstring("<root><elm>hats</elm></root>")

In [3]: elm = root.find(".//elm")

In [4]: elm.text
Out[4]: 'hats'

In [5]: elm.text = 'cats'

In [6]: ET.tostring(root)
Out[6]: '<root><elm>cats</elm></root>'

回答2:

1. import xml.etree.ElementTree as ET # import the elementtree module
2. root = ET.fromstring(command_request) # fromString parses xml from string to an element, command request can be xml request string
3. root.find("cat").text = "dog" #find the element tag as cat and replace it with the string to be replaced.
4. ET.tostring(root) # converts the element to a string

cheers

来源：https://stackoverflow.com/questions/40244271/change-xml-element-text-using-xml-etree-elementtree