Mailman 3 February 2014 - lxml - The Python XML Toolkit

[lxml-dev] lxml has its page on launchpad
by Stefan Behnel 11 Apr '23

11 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 10 Apr '23

10 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 31 Aug '22

31 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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generating html with incremental writer
by Burak Arslan 25 Sep '14

25 Sep '14

Hi, Is there a way to pass method='html' to etree.xmlfile()? Or any other way to serialize incrementally to html? Best, Burak

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inf loop in bad attribute
by kris kvilekval 28 Feb '14

28 Feb '14

In 3.3.2 The following seems to create an infinite loop: > etree.__version__ u'3.3.2' > etree.Element ('a', nm = None) ^C KeyboardInterrupt While the same in 3.2.3 produced an error: > etree.__version__ u'3.2.1' > etree.Element('a', nm= None) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/kgk/work/bisque/bq5-stable/<ipython console> in <module>() /home/kgk/work/bisque/bq5-stable/bqenv/local/lib/python2.7/site-packages/lxml-3.2.1-py2.7-linux-x86_64.egg/lxml/etree.so in lxml.etree.Element (src/lxml/lxml.etree.c:61442)() /home/kgk/work/bisque/bq5-stable/bqenv/local/lib/python2.7/site-packages/lxml-3.2.1-py2.7-linux-x86_64.egg/lxml/etree.so in lxml.etree._makeElement (src/lxml/lxml.etree.c:13860)() /home/kgk/work/bisque/bq5-stable/bqenv/local/lib/python2.7/site-packages/lxml-3.2.1-py2.7-linux-x86_64.egg/lxml/etree.so in lxml.etree._makeElement (src/lxml/lxml.etree.c:13732)() /home/kgk/work/bisque/bq5-stable/bqenv/local/lib/python2.7/site-packages/lxml-3.2.1-py2.7-linux-x86_64.egg/lxml/etree.so in lxml.etree._initNodeAttributes (src/lxml/lxml.etree.c:15399)() /home/kgk/work/bisque/bq5-stable/bqenv/local/lib/python2.7/site-packages/lxml-3.2.1-py2.7-linux-x86_64.egg/lxml/etree.so in lxml.etree._utf8 (src/lxml/lxml.etree.c:24676)() TypeError: Argument must be bytes or unicode, got 'NoneType' I

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lxml 3.3.2 released
by Stefan Behnel 26 Feb '14

26 Feb '14

Hi all, I'm happy to announce the release of lxml 3.3.2. This is a bug-fix-only release for the stable lxml 3.3 series. It fixes a few more regressions in 3.3 as well as some long standing bugs. Upgrading is generally recommended. The documentation is here: http://lxml.de/ Download: http://lxml.de/files/lxml-3.3.2.tgz Signature: http://lxml.de/files/lxml-3.3.2.tgz.asc Changelog: http://lxml.de/3.3/changes-3.3.2.html Github: https://github.com/lxml/lxml/commit/477fa0b36c5ecd6c26d0ea5190f518ad2f7b196f This release was built using Cython 0.20.1. If you are interested in commercial support or customisations for the lxml package, please contact me directly. Have fun, Stefan 3.3.2 (2014-02-26) ================== Bugs fixed ---------- * The properties ``resolvers`` and ``version``, as well as the methods ``set_element_class_lookup()`` and ``makeelement()``, were lost from ``iterparse`` objects. * LP#1222132: instances of ``XMLSchema``, ``Schematron`` and ``RelaxNG`` did not clear their local ``error_log`` before running a validation. * LP#1238500: lxml.doctestcompare mixed up "expected" and "actual" in attribute values. * Some file I/O tests were failing in MS-Windows due to incorrect temp file usage. Initial patch by Gabi Davar. * LP#910014: duplicate IDs in a document were not reported by DTD validation. * LP#1185332: ``tostring(method="html")`` did not use HTML serialisation semantics for trailing tail text. Initial patch by Sylvain Viollon. * LP#1281139: ``.attrib`` value of Comments lost its mutation methods in 3.3.0. Even though it is empty and immutable, it should still provide the same interface as that returned for Elements.

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xml2rfc failing against lxml 3.3.1
by Daniel Kahn Gillmor 25 Feb '14

25 Feb '14

hi IETF tools and LXML folks -- The IETF's xml2rfc tool (tested with versions 2.4.5 and 2.4.3) is failing for me when used with python's lxml module version 3.3.1. for example: ====================================================================== ERROR: test_header_footer (__main__.WriterDraftTest) ---------------------------------------------------------------------- Traceback (most recent call last): File "./test.py", line 264, in setUp self.parse('tests/input/draft_root.xml') File "./test.py", line 222, in parse self.xmlrfc = self.parser.parse() File "/home/dkg/src/xml2rfc/xml2rfc/xml2rfc/parser.py", line 408, in parse context.resolvers.add(caching_resolver) AttributeError: 'lxml.etree.iterparse' object has no attribute 'resolvers' This was not a problem when i used lxml 3.2.0. I haven't dived deep into lxml yet, but looking in the upstream changelog at https://github.com/lxml/lxml/blob/master/CHANGES.txt, i see: * The externally useless class ``lxml.etree._BaseParser`` was removed from the module dict. and lxml.etree._BaseParser does have a "resolvers" attribute. So if i'm interpreting this right, either lxml upstream was mistaken about the idea that _BaseParser is externally useless (because it's being used by xml2rfc), or xml2rfc needs to find another way to set up its caching resolvers. What should be done here? (i've only just now tried to subscribe to the lxml mailing list and their subscription confirmation hasn't come through;, so i'm not sure this message will make it to their list. But i'm happy to try to follow up more with the lxml elsewhere if there are suggestions for a better way to get in touch, and if we determine that this isn't something we can fix cleanly in xml2rfc) Regards, --dkg

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Wrapping some elements in a text in a new element
by Martin Mueller 23 Feb '14

23 Feb '14

I am working on a corpus of plays where not all speeches have been properly wrapped in <sp> elements. This happens mostly when a character enters and the speaker label is implicit in the stage direction, as in the following fragment of two speeches, where the second speech is properly wrapped but the first is not: <stage><hi>Enter</hi> Simplo <hi>and</hi> Nouerindo.</stage> <hi>Mounsieur Proberio,</hi> you are welcome home. <sp who="A18423_proberio"> <speaker>Pro.</speaker> That's more then you know <hi>Segnieur Simplo,</hi> what countrey shalbe my home? </sp> I have found a solution that works, but I am not sure whether it is the best. I iterate over <div> elements and look for elements that are preceded by <stage>. the I do the following: 1. I establish the index position of the div child 2. I create an <sp> element 3. I append the div child to the <sp> element 4. I insert the <sp> element into the index position of the div child The code looks like dom = etree.parse(filepath) for element in dom.iter(tei + 'div'): for child in element: if child.tag == tei + 'p' \ and child.getprevious().tag == tei + 'stage': index= element.index(child) sp = etree.Element(tei +'sp') sp.append(child) element.insert(index,sp) print(etree.tostring(dom, encoding='unicode', pretty_print=True), file=fileout) Is there a simpler way of doing this? Martin Mueller Professor emeritus of English and Classics Northwestern University

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