lxml - The Python XML Toolkit February 2009

lxml@python.org

15 participants
25 discussions

[lxml-dev] Checking whether a node is a comment/element
by Geoffrey Sneddon 11 Jan '23

11 Jan '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] 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] lxml has its page on launchpad
by Stefan Behnel 21 Sep '22

21 Sep '22

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] 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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[lxml-dev] Compilation of lxml on Windows 64-bit
by Hanni Ali 17 Jul '09

17 Jul '09

Hi All, Came across this little gem of a Python module which seems able to translate some XML reports for me nicely. I was very pleased to see a Python 2.6 installer for windows, made checking it out much easier than many modules I use. So thanks for that. However although my testing seems to confirm this is the ideal module I do need to deploy to our production environment which is a 64-bit Windows environment running Python 2.6 (I code on 32-bit box for simplicity/resource reasons). Has anyone compiled and used lxml on this platform combination? If not does anyone foresee me having any issues compiling it for this platform? Thanks, Hanni

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[lxml-dev] lxml 2.2beta4 - release candidate for 2.2 final
by Stefan Behnel 20 Mar '09

20 Mar '09

Hi all, here is another almost-final version of lxml 2.2. Call it a release candidate, if you prefer. This release was necessary as the changelog was getting way too long, and the (crash-)bugs that were fixed in this release were too important to wait. So, updating is recommended. http://codespeak.net/lxml/dev/ http://pypi.python.org/pypi/lxml/2.2beta4 I'm very happy to announce that this is the first release that fully supports Python 3. The previous releases suffered from an annoying crash bug in Cython that was uncovered by the exception handling changes in Py3. This means that lxml now supports any officially released Python version from 2.3.x through 3.0.1. Note that the PDF documentation was broken in the last betas due to a recent system update on my side. It's back up for beta4. This release was built with revision "1796:cb0f315bb4f5" of the Cython 0.11 development branch. Have fun, Stefan 2.2beta4 (2009-02-27) Features added * Support strings and instantiable Element classes as child arguments to the constructor of custom Element classes. * GZip compression support for serialisation to files and file-like objects. Bugs fixed * Deep-copying an ElementTree copied neither its sibling PIs and comments nor its internal/external DTD subsets. * Soupparser failed on broken attributes without values. * Crash in XSLT when overwriting an already defined attribute using xsl:attribute. * Crash bug in exception handling code under Python 3. This was due to a problem in Cython, not lxml itself. * lxml.html.FormElement._name() failed for non top-level forms. * TAG special attribute in constructor of custom Element classes was evaluated incorrectly. Other changes * Official support for Python 3.0.1. * Element.findtext() now returns an empty string instead of None for Elements without text content.

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[lxml-dev] thread-related crash when using xslt
by Martijn Faassen 27 Feb '09

27 Feb '09

Hi there, Attached is a small tarball that demonstrates code that crashes when the code is run in a thread but doesn't crash when it is run stand-alone. I isolated the specific XSLT + XML combination that seems to trigger this crash. I suspect it has to do with passing an XSLT object to a thread. I run this with lxml 2.1.5 in Python 2.4, libxml2 2.6.32 and libxslt 1.1.24 By the way, the FAQ implies that passing an XSLT object into a thread will slow things down (probably as the XSLT would be re-interpreted). Is that still true in the current codebase? I had the impression from previous discussions that this would change. Regards, Martijn

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[lxml-dev] Standalone declaration
by Ovnicraft 26 Feb '09

26 Feb '09

Hi, i am new with lxml and is great, i created an xml now i want to make standalone declaration in my structure, how i can do it? i search in docs but i didnt good results. Thx in advance -- [b]question = (to) ? be : !be; .[/b]

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[lxml-dev] Some praise for lxml in ibm developerworks
by jholg＠gmx.de 25 Feb '09

25 Feb '09

Just stumbled on this: http://www.ibm.com/developerworks/xml/library/x-hiperfparse/ Might've been mentioned before here (?), but I haven't been able to follow too closely these days... Holger -- Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger01

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[lxml-dev] how to inherit from ElementBase?
by TP 23 Feb '09

23 Feb '09

Hi everybody, For my application, I try to inherit the ElementBase class of lxml. I have read the following page: http://codespeak.net/lxml/dev/api/lxml.etree.ElementBase-class.html "Class ElementBase: The public Element class. All custom Element classes must inherit from this one. To create an Element, use the Element() factory." So I have tried to define a new class deriving from ET.ElementBase, and set the factory (__metaclass__) to ET.Element. You will find my code below. I obtain: $ p test_element_factory.py Traceback (most recent call last): File "test_element_factory.py", line 3, in <module> class NewElement( ET.ElementBase ): File "etree.pyx", line 1844, in etree.Element File "apihelpers.pxi", line 129, in etree._makeElement File "apihelpers.pxi", line 116, in etree._makeElement File "etree.pyx", line 362, in etree._Document._setNodeNamespaces File "apihelpers.pxi", line 651, in etree._utf8 TypeError: Argument must be string or unicode. What is the problem? Thanks in advance, Julien ############################## import lxml.etree as ET class NewElement( ET.ElementBase ): __metaclass__ = ET.Element def _init( self , *args , **kwargs ): super( NewElement, self ).__init__( self , *args , **kwargs ) a = NewElement( "root" ) print a ############################## -- python -c "print ''.join([chr(154 - ord(c)) for c in '*9(9&(18%.\ 9&1+,\'Z4(55l4('])" "When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong." (first law of AC Clarke)

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lxml - The Python XML Toolkit February 2009