Extract data using lxml in Python from every namespace attribute

Question

The following is a snippet of code from the extraction of an FODT file:

<office:document xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"
xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0"
xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0"
xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:rpt="http://openoffice.org/2005/report" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:officeooo="http://openoffice.org/2009/office" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:css3t="http://www.w3.org/TR/css3-text/" office:version="1.2" office:mimetype="application/vnd.oasis.opendocument.text">

I want to separate the content of each namespace. For example, I want to extract xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0", xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0", etc. including the namespace names themselves.

How do I do it using lxml?

What do you mean by "separate the content of each namespace"? Do you just want to list all declared namespaces? — mzjn
– mzjn, Commented Jun 1, 2016 at 18:15
@mzjn I'm sorry if I am not using the appropriate terminology. From the above code, I would like to have a list of this sort - [xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0", xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0", ...] — Shreedhar Manek
– Shreedhar Manek, Commented Jun 1, 2016 at 18:18

mzjn · Accepted Answer · 2016-06-01 18:23:44Z

2

The nsmap property on the root element holds a dictionary with all declared namespaces. Example:

from lxml import etree

XML = "your XML document here..."

root = etree.fromstring(XML)
for ns in sorted(root.nsmap.items()):
    print ns

Output:

('calcext', 'urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0')
('chart', 'urn:oasis:names:tc:opendocument:xmlns:chart:1.0')
('config', 'urn:oasis:names:tc:opendocument:xmlns:config:1.0')
('css3t', 'http://www.w3.org/TR/css3-text/')
('dc', 'http://purl.org/dc/elements/1.1/')
('dom', 'http://www.w3.org/2001/xml-events')
('dr3d', 'urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0')
('draw', 'urn:oasis:names:tc:opendocument:xmlns:drawing:1.0')
('drawooo', 'http://openoffice.org/2010/draw')
('field', 'urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0')
('fo', 'urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0')
('form', 'urn:oasis:names:tc:opendocument:xmlns:form:1.0')
('formx', 'urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0')
('grddl', 'http://www.w3.org/2003/g/data-view#')
('loext', 'urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0')
('math', 'http://www.w3.org/1998/Math/MathML')
('meta', 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0')
('number', 'urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0')
('of', 'urn:oasis:names:tc:opendocument:xmlns:of:1.2')
('office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0')
('officeooo', 'http://openoffice.org/2009/office')
('ooo', 'http://openoffice.org/2004/office')
('oooc', 'http://openoffice.org/2004/calc')
('ooow', 'http://openoffice.org/2004/writer')
('rpt', 'http://openoffice.org/2005/report')
('script', 'urn:oasis:names:tc:opendocument:xmlns:script:1.0')
('style', 'urn:oasis:names:tc:opendocument:xmlns:style:1.0')
('svg', 'urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0')
('table', 'urn:oasis:names:tc:opendocument:xmlns:table:1.0')
('tableooo', 'http://openoffice.org/2009/table')
('text', 'urn:oasis:names:tc:opendocument:xmlns:text:1.0')
('xforms', 'http://www.w3.org/2002/xforms')
('xhtml', 'http://www.w3.org/1999/xhtml')
('xlink', 'http://www.w3.org/1999/xlink')
('xsd', 'http://www.w3.org/2001/XMLSchema')
('xsi', 'http://www.w3.org/2001/XMLSchema-instance')

answered Jun 1, 2016 at 18:23

mzjn

51.5k16 gold badges139 silver badges265 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Shreedhar Manek Over a year ago

Thank you so much! This was a noob-ish question, but it goes a long way in simplifying my future work :)

Shreedhar Manek Over a year ago

I have another question. If you have a look at the code snippet in my question, this is what you will see at the end - office:version="1.2" office:mimetype="application/vnd.oasis.opendocument.text" How do I extract this? Since they are not namespaces I cannot extract them the same way.

mzjn Over a year ago

office:version="1.2" and office:mimetype="application/vnd.oasis.opendocument.text" are regular attributes (not namespace declarations). They are stored in the attrib property on the root element. Also available via the items() method. See lxml.de/api/lxml.etree._Element-class.html.

Collectives™ on Stack Overflow

Extract data using lxml in Python from every namespace attribute

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related