Mailman 3 August 2015 - lxml - The Python XML Toolkit

[lxml-dev] lxml has its page on launchpad
by Stefan Behnel 10 Apr '23

10 Apr '23

Hi all, I added the lxml project to launchpad, the Ubuntu Bug-Tracker. It also has a FAQ engine and a couple of other goodies. https://launchpad.net/lxml It's easy to sign up for launchpad, BTW, no 90%-footnotes-contract. Have fun, Stefan

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[lxml-dev] Checking whether a node is a comment/element
by Geoffrey Sneddon 09 Apr '23

09 Apr '23

Hi, What's the best way to check whether a given node is a comment or an element? For the former, I'm currently using isinstance(node, etree._Comment), which is rather obviously sub-optimal. -- Geoffrey Sneddon <http://gsnedders.com/>

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[lxml-dev] Reparenting a node
by Lawrence Oluyede 30 Jan '23

30 Jan '23

I have a doc A and a doc B, I'd like to put a node extracted from A in the document B but I always get a ValueError: ValueError: Element is not a child of this node. I didn't find any "setparent" in the API. How can I do this? -- Lawrence, oluyede.org - neropercaso.it "It is difficult to get a man to understand something when his salary depends on not understanding it" - Upton Sinclair

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[lxml-dev] lxml 2.0.5 released
by Stefan Behnel 11 Jan '23

11 Jan '23

Hi all, lxml 2.0.5 is on PyPI. This is a bug-fix-only release of the stable 2.0 series. Have fun, Stefan 2.0.5 (2008-05-01) Bugs fixed * Resolving to a filename in custom resolvers didn't work. * lxml did not honour libxslt's second error state "STOPPED", which let some XSLT errors pass silently. * Memory leak in Schematron with libxml2 >= 2.6.31.

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[lxml-dev] Building LXML Trunk
by Sidnei da Silva 30 Aug '22

30 Aug '22

Hi, I've tried to build lxml from trunk today, on Win32. Got the following error: src\lxml\etree.c(880) : error C2059: syntax error : ')' src\lxml\etree.c(881) : error C2059: syntax error : ')' src\lxml\etree.c(882) : error C2059: syntax error : ')' src\lxml\etree.c(883) : error C2059: syntax error : ')' Any clue? Smells like a Pyrex issue? -- Sidnei da Silva Enfold Systems http://enfoldsystems.com Fax +1 832 201 8856 Office +1 713 942 2377 Ext 214

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Querying XML catalogs for URIs
by Eero Helenius 21 Aug '15

21 Aug '15

Hi all, I’m developing an lxml-based Python 3 app that uses the xml-model processing instruction to validate XML files against the schema associated with that file. Here’s an example of an xml-model PI: <?xml-model href="http://www.docbook.org/xml/5.0/rng/docbook.rng" type="application/xml" schematypens="http://relaxng.org/ns/structure/1.0”?> My app would then validate the file that has this PI against the DocBook 5.0 RelaxNG schema defined in the @href attribute. For more information on the xml-model PI, see http://www.w3.org/TR/xml-model/. I can get the @href attribute of the PI just fine and use the schema it points to to validate the file, but I would really like to be able to query my XML catalog for the URI in the @href attribute and that way use a local copy of the schema instead of having to download it from an external source. The “original” libxml2 python bindings have a function called catalogResolveURI which seems to do precisely what I need. Here’s an example lifted from Stack Overflow (http://stackoverflow.com/a/7229470/825783): import libxml2 libxml2.loadCatalog('catalog.xml’) print libxml2.catalogResolveURI('file:///common/logo.xml') file:///home/kst/svn/TOOLS/Docbook/common/logo.xml I would use that function, but there doesn’t seem to be a version of libxml2 bindings for Python 3, unfortunately. So my question is, does lxml offer a way to do this? I tried browsing through the API docs and some parts of the code but I couldn’t find any way to do it. If not, would it be possible to add this feature? Or is it maybe possible to use the public C API to add this feature? If so, could you give me any pointers on how to achieve that? I’m guessing the libxml2 xmlACatalogResolveURI function (http://xmlsoft.org/html/libxml-catalog.html#xmlACatalogResolveURI) would do the job, so I guess I’d just need a way to call it via lxml. Many thanks in advance! Best, Eero Helenius

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where do I report a bug?
by krey 21 Aug '15

21 Aug '15

Hi there, I think I've found a bug in lxml, but I wasn't able to find a bug tracker (the stuff on launchpad is ancient, github doesn't have an 'issues' page) parser.pxi in lxml.etree.ParseError.__init__ (src/lxml/lxml.etree.c:89005)() TypeError: __init__() takes exactly 5 positional arguments (2 given) I don't really have the code/input to reproduce it, but it should be easy enough to fix. Thanks, Kris Sent from an iToaster.

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html5lib example code at http://lxml.de/html5parser.html
by Corey Boyle 11 Aug '15

11 Aug '15

When I run the example code at http://lxml.de/html5parser.html I get... <html:table xmlns:html="http://www.w3.org/1999/xhtml "><html:tbody><html:tr><html:td>foo</html:td></html:tr></html:tbody></html:table> but the page says I should get... '<table><tbody><tr><td>foo</td></tr></tbody></table>' How can I get rid of the namespace stuff? This is the exact code I am running... from lxml.html import tostring, html5parser print tostring(html5parser.fromstring("<table><td>foo"))

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