Modifying xml attributes through python

Question

I have the following XML file in which the following information is present.

<PHYSICAL_TLINE>
    <Traces general_diff="0" z_array="0" s_array="0" w_array="0" etch_factor="0.35" TS_track2track="0" TS_DQS="0" TW_DQS="0" TS_byte2dqs="0" TS_byte2byte="0" TS_DQ="0" TW_DQ="0" dsl_offset="0" D="20" TS="7" TW="5"/>
<PHYSICAL_TLINE>

Is there a way to set the values of these elements through python? For example, if I want to change the value of s_array to 5 instead of 0?. I know that there is the xml.etree set command but I'm not too sure on how to set the values of these attributes in the child through python.

Possible duplicate of stackoverflow.com/questions/17922056/… — DeepSpace
– DeepSpace, Commented Apr 25, 2018 at 14:28

zx485 · Accepted Answer · 2018-04-25 19:48:33Z

2

child.attrib["s_array"] = '0'

Assuming that child is the <Traces/> node.

Edit:
0 needs to be a string

edited Apr 25, 2018 at 19:48

zx485

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answered Apr 25, 2018 at 14:28

Jakob Sachs

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1 Comment

DeepSpace Over a year ago

0 should be a string, child.attrib["s_array"] = '0'

sc305495 · Accepted Answer · 2018-04-25 14:27:53Z

1

This documentation may be helpful for you: https://docs.python.org/2/library/xml.etree.elementtree.html

Note 19.7.1.4. Modifying an XML File

Modifying some code like this should acheive the desired result:

for rank in root.iter('rank')
    rank.set('updated', 'yes')
tree.write('output.xml')

answered Apr 25, 2018 at 14:27

sc305495

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2 Comments

Potato Over a year ago

I tried this but I am getting the error AttributeError: 'NoneType' object has no attribute 'set'

sc305495 Over a year ago

Please provide code based off of the xml above and we may be able to help out :).

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