jdelange jdelange - 1 year ago 710
Python Question

Python XML: ParseError: junk after document element

Trying to parse XML file into ElementTree:

>>> import xml.etree.cElementTree as ET
>>> tree = ET.ElementTree(file='D:\Temp\Slikvideo\JPEG\SV_4_1_mask\index.xml')

I get following error:

Traceback (most recent call last): File "", line 1, in
File "C:\Program
Files\Anaconda2\lib\xml\etree\ElementTree.py", line 611, in init
self.parse(file) File "", line 38, in parse ParseError: junk after document element: line 3, column 0

XML file starts like this:

<?xml version="1.0" encoding="UTF-8" ?>
<Version Writer="E:\d\src\Modules\SceneSerialization\src\mitkSceneIO.cpp" Revision="$Revision: 17055 $" FileVersion="1" />
<node UID="OBJECT_2016080819041580480127">
<source UID="OBJECT_2016080819041550469454" />
<data type="LabelSetImage" file="hfbaaa_Bolus.nrrd" />
<properties file="sicaaa" />
<node UID="OBJECT_2016080819041512769572">
<source UID="OBJECT_2016080819041598947781" />
<data type="LabelSetImage" file="ifbaaa_Bolus.nrrd" />
<properties file="ticaaa" />

followed by many more nodes.

I do not see any junk in line 3, column 0? I assume there must be another reason for the error.

The .xml file is generated by external software MITK so I assume that should be ok.

Working on Win 7, 64 bit, VS2015, Anaconda

Answer Source

As @Matthias Wiehl said, ElementTree expects only a single root node and is not well-formed XML and should be fixed at its origin. As a workaround you can simply add a fake root node to the document.

import xml.etree.cElementTree as ET
import re

with open("index.xml") as f:
    xml = f.read()
tree = ET.fromstring(re.sub(r"(<\?xml[^>]+\?>)", r"\1<root>", xml) + "</root>")
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