Mailman 3 February 2022 - lxml - The Python XML Toolkit

Undefined symbol error when using lxml from within OBS on Linux machine
by Daniel Beiter Feb. 10, 2022

Feb. 10, 2022

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Custom structured types with objectify.PyType?
by Tobias Deiminger Feb. 10, 2022

Feb. 10, 2022

Hi folks, lxml.objectfy lets us define custom types by means of objectify.PyType and ObjectifiedDataElement sub classes, e.g. as in [0]. It's nice how they map to XSD and automatically convert between python type and XML representation. I understand how it works for scalar leaf nodes. But does objectify.PyType work for structured/nested types as well? Or is PyType the wrong tool and one should better head over to "Generating XML with custom classes" [1] and "Custom element class lookup" [2]? Or is it not possible at all? Simple imaginary code: ---snip--- from collections import namedtuple from lxml import etree, objectify # A structured python type MyStructuredThing = namedtuple('MyStructuredThing', 'a b') # some custom code and registration like with objectify.PyType here # ... root = objectify.Element("root") # magically take python type and construct tree + leaf elements automagically root.mystructuredthing = MyStructuredThing(1, 2) etree.tostring(root, pretty_print=True) ---snap--- Expected output: <root> <mystructuredthing> <a>1</a> <b>1</b> </mystructuredthing> <root> etree.fromstring should in turn deserialize this XML snippet, so that isinstance(root.mystructuredthing.pyval, MyStructuredThing) == True. Thanks Tobias [0] https://lxml.de/api/lxml.tests.test_objectify-pysrc.html#ObjectifyTestCase.… [1] https://lxml.de/element_classes.html#generating-xml-with-custom-classes [2] https://lxml.de/element_classes.html#custom-element-class-lookup

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Missing PDFs from lxml.de/lxml-VERSION.pdf?
by Thomas Schraitle Feb. 2, 2022

Feb. 2, 2022

Hi, not really remember, but some time ago it was possible to download the latest PDF from lxml.de/lxml-<VERSION>.pdf. This worked quite well, but now I get a 404. Is there a replacement that I can use? If not, would it be possible to build the PDF from the sources and upload it to the assets on a GitHub release? Thanks! -- Gruß/Regards Thomas Schraitle

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