Dear lxml people!
You may have noticed that I am working on a better lxml.objectify. I
have not decided yet on a final name for this so lets name it
"prefix_objectify" in the meanwhile.
This name reflects on its aim - to include the ns-prefix information
into the Python property name.
Motivation:
If I have a ISO19139 snipplet
|<gmd:MD_Metadata xmlns:gmd="http://www.isotc211.org/2005/gmd";
xmlns:gco="http://www.isotc211.org/2005/gco"; > <gmd:fileIdentifier>
<gco:CharacterString>2ce585df-df23-45f6-b8e1-184e64e7e3b5</gco:CharacterString>
</gmd:fileIdentifier> <gmd:language> <gmd:LanguageCode
codeList="https://www.loc.gov/standards/iso639-2/";
codeListValue="ger">ger</gmd:LanguageCode> </gmd:language>
</gmd:MD_Metadata> |
lxml is not capable to expose the |gco:CharacterString as a Python
property.|
|https://stackoverflow.com/questions/71212909/python-lxml-objectify-gives-no-attribute-access-to-gcocharacterstring-node
|
So I decided to come up with a better solution including the
namespace-prefix into the Python property name (as all other frameworks
dealing with qualified names are doing).
So |gco:CharacterString will be exposed as a Python property
'|||gco_CharacterString'.||
Even the recent discussion on the flaws of lxml.objectify is rather
controversical. So I decided to contribute "prefix_objectify" as
different python package/project and not as a fork of LXML to avoid a clash.
The usage of "prefix_objectify" should be as easy as :
from lxml.objectify import ObjectifyElementClassLookup
from lxml import etree
from prefix_objectify import PrefixObjectifiedElement
obj2_lookup =
ObjectifyElementClassLookup(tree_class=PrefixObjectifiedElement)
parser = etree.XMLParser()
parser.set_element_class_lookup(obj2_lookup)
node = etree.parse('4157d397-e2c3-4e6e-8a84-0712aa9c1162.xml',
parser=parser).getroot()
ATM while I do reverse engineering of the lxml.objectify code it is more
convenient to make a fork first. This is e.g. due to the lack of
pxd-file describing lxml.objectify.
My fork of lxml lives here
https://github.com/Inqbus/lxml/tree/objectify_prefix
in the branch 'objectify_prefix'.
Around half of the tests are running good.
This is after hour work in progress and I welcome any feedback or
contribution.
Cheers,
Volker
--
=========================================================
inqbus Scientific Computing Dr. Volker Jaenisch
Hungerbichlweg 3 +49 (8860) 9222 7 92
86977 Burggenhttps://inqbus.de
=========================================================
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