lxml - The Python XML Toolkit September 2009

lxml@python.org

21 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] xpath check, selective xslt
by Emanuele D'Arrigo 28 Oct '09

28 Oct '09

Hi everybody, a couple of questions: 1) is it possible to check if an element is selected by a particular xpath expression -without- checking if the element is part of the whole node-set returned by the expression evaluation? 2) let's assume we have an xslt-transformed ElementTree and that we add an untransformed branch to it. Is it possible to apply the same xslt transformation selectively, only to the added branch but not to the rest of the tree? Of course this wouldn't help in those situation where transformed(tree+branch) != transformed(tree) + transformed(branch). But excluding those cases, is there a way to do it? Thanks for your help! Manu

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[lxml-dev] lxml and xmlsec
by Roland Hedberg 07 Oct '09

07 Oct '09

Hi! I need xmlsec and I'd like to use lxml instead of libxml, is it possible ? libxml is as it's distributed dependent on libxml, but I don't know how hard it would be to put together a lxmlsec where libxml was exchanged for lxml. Has anyone done it ? --Roland

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[lxml-dev] setuptools issues with python2.6 maint
by Michael Bayer 03 Oct '09

03 Oct '09

My apologies for dumping a bad build on the list here, but googling returned absolutely nothing for this one. I haven't had this issue before so it may be related to my usage of the latest python 2.6 mainentance branch which I got from http://svn.python.org/projects/python/branches/release26-maint . It builds fine if I run a straight distutils build without setuptools being installed. Otherwise I get the below - tested against 2.1.5, 2.2, and 2.2.2, any ideas are appreciated. root@stageassets lxml-2.2.2]# /usr/local/bin/python setup.py install Building lxml version 2.2.2. NOTE: Trying to build without Cython, pre-generated 'src/lxml/lxml.etree.c' needs to be available. Using build configuration of libxslt 1.1.24 Building against libxml2/libxslt in the following directory: /usr/lib running install running build running build_py running build_ext running install_lib creating /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/sax.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/pyclasslookup.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/ElementInclude.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/etree.so -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/_elementpath.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/__init__.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/usedoctest.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/doctestcompare.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/cssselect.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/builder.py -> /usr/local/lib/python2.6/site-packages/lxml copying build/lib.linux-i686-2.6/lxml/objectify.so -> /usr/local/lib/python2.6/site-packages/lxml creating /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/diff.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/defs.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/_setmixin.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/_diffcommand.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/__init__.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/usedoctest.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/ElementSoup.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/_html5builder.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/builder.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/formfill.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/html5parser.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/soupparser.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/clean.py -> /usr/local/lib/python2.6/site-packages/lxml/html copying build/lib.linux-i686-2.6/lxml/html/_dictmixin.py -> /usr/local/lib/python2.6/site-packages/lxml/html byte-compiling /usr/local/lib/python2.6/site-packages/lxml/sax.py to sax.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/pyclasslookup.py to pyclasslookup.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/ElementInclude.py to ElementInclude.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/_elementpath.py to _elementpath.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/__init__.py to __init__.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/usedoctest.py to usedoctest.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/doctestcompare.py to doctestcompare.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/cssselect.py to cssselect.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/builder.py to builder.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/diff.py to diff.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/defs.py to defs.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/_setmixin.py to _setmixin.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/_diffcommand.py to _diffcommand.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/__init__.py to __init__.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/usedoctest.py to usedoctest.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/ElementSoup.py to ElementSoup.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/_html5builder.py to _html5builder.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/builder.py to builder.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/formfill.py to formfill.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/html5parser.py to html5parser.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/soupparser.py to soupparser.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/clean.py to clean.pyc byte-compiling /usr/local/lib/python2.6/site-packages/lxml/html/_dictmixin.py to _dictmixin.pyc running install_egg_info Writing /usr/local/lib/python2.6/site-packages/lxml-2.2.2-py2.6.egg-info [root@stageassets lxml-2.2.2]# /var/web/hosts/fanfeedr.com/snapscores.com/bin/python setup.py install Building lxml version 2.2.2. NOTE: Trying to build without Cython, pre-generated 'src/lxml/lxml.etree.c' needs to be available. Using build configuration of libxslt 1.1.24 Building against libxml2/libxslt in the following directory: /usr/lib running install running bdist_egg running egg_info writing src/lxml.egg-info/PKG-INFO writing top-level names to src/lxml.egg-info/top_level.txt writing dependency_links to src/lxml.egg-info/dependency_links.txt reading manifest file 'src/lxml.egg-info/SOURCES.txt' reading manifest template 'MANIFEST.in' writing manifest file 'src/lxml.egg-info/SOURCES.txt' installing library code to build/bdist.linux-i686/egg running install_lib running build_py running build_ext Traceback (most recent call last): File "setup.py", line 116, in <module> **extra_options File "/usr/local/lib/python2.6/distutils/core.py", line 152, in setup dist.run_commands() File "/usr/local/lib/python2.6/distutils/dist.py", line 975, in run_commands self.run_command(cmd) File "/usr/local/lib/python2.6/distutils/dist.py", line 995, in run_command cmd_obj.run() File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/install.py", line 76, in run File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/install.py", line 96, in do_egg_install File "/usr/local/lib/python2.6/distutils/cmd.py", line 333, in run_command self.distribution.run_command(command) File "/usr/local/lib/python2.6/distutils/dist.py", line 995, in run_command cmd_obj.run() File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/bdist_egg.py", line 174, in run File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/bdist_egg.py", line 161, in call_command File "/usr/local/lib/python2.6/distutils/cmd.py", line 333, in run_command self.distribution.run_command(command) File "/usr/local/lib/python2.6/distutils/dist.py", line 995, in run_command cmd_obj.run() File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/install_lib.py", line 20, in run File "/usr/local/lib/python2.6/distutils/command/install_lib.py", line 113, in build self.run_command('build_ext') File "/usr/local/lib/python2.6/distutils/cmd.py", line 333, in run_command self.distribution.run_command(command) File "/usr/local/lib/python2.6/distutils/dist.py", line 995, in run_command cmd_obj.run() File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/build_ext.py", line 46, in run File "/usr/local/lib/python2.6/distutils/command/build_ext.py", line 340, in run self.build_extensions() File "/usr/local/lib/python2.6/distutils/command/build_ext.py", line 449, in build_extensions self.build_extension(ext) File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/build_ext.py", line 175, in build_extension File "/usr/local/lib/python2.6/distutils/command/build_ext.py", line 460, in build_extension ext_path = self.get_ext_fullpath(ext.name) File "/usr/local/lib/python2.6/distutils/command/build_ext.py", line 633, in get_ext_fullpath filename = self.get_ext_filename(modpath[-1]) File "/var/web/hosts/fanfeedr.com/snapscores.com/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg/setuptools/command/build_ext.py", line 85, in get_ext_filename KeyError: 'etree'

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[lxml-dev] Question about lxml.html.builder
by Joseph Reagle 01 Oct '09

01 Oct '09

I'm using Python 2.5.2 with lxml 2.1.1-1ubuntu1. I'm trying to get some version of the lines involving 'wp_ps' to work: if opts.text: wp_ps = [E.P(p) for p in bio.wp_text.split('\n')] table.append( E.TR( E.TD(''), E.TD().extend(wp_ps), #E.TD(bio.wp_text, colspan='2'), E.TD(bio.eb_text, colspan='2'), valign="top", ), ) Simply, I want to take text with LFs and turn them into Ps.

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[lxml-dev] objectify __setattr__/addattr bug
by jholg＠gmx.de 28 Sep '09

28 Sep '09

Hi, funny how s.th. like this could go undetected in all lxml.objectify versions: python2.4 -i -c 'from lxml import etree, objectify; objectify.enable_recursive_str(); print etree.__version__; print etree.LIBXML_VERSION, etree.LIBXSLT_VERSION; root=objectify.Element("root")' 2.2.2 (2, 6, 32) (1, 1, 23) >>> root.s1 = 'äöü' Traceback (most recent call last): File "<stdin>", line 1, in ? File "lxml.objectify.pyx", line 246, in lxml.objectify.ObjectifiedElement.__setattr__ (src/lxml/lxml.objectify.c:3061) File "lxml.objectify.pyx", line 524, in lxml.objectify._appendValue (src/lxml/lxml.objectify.c:5771) File "lxml.objectify.pyx", line 552, in lxml.objectify._setElementValue (src/lxml/lxml.objectify.c:6033) File "public-api.pxi", line 76, in lxml.etree.setNodeText (src/lxml/lxml.etree.c:118529) File "apihelpers.pxi", line 650, in lxml.etree._setNodeText (src/lxml/lxml.etree.c:15144) File "apihelpers.pxi", line 1247, in lxml.etree._utf8 (src/lxml/lxml.etree.c:19727) ValueError: All strings must be XML compatible: Unicode or ASCII, no NULL bytes >>> root.addattr('s2', 'äöü') Traceback (most recent call last): File "<stdin>", line 1, in ? File "lxml.objectify.pyx", line 261, in lxml.objectify.ObjectifiedElement.addattr (src/lxml/lxml.objectify.c:3228) File "lxml.objectify.pyx", line 524, in lxml.objectify._appendValue (src/lxml/lxml.objectify.c:5771) File "lxml.objectify.pyx", line 552, in lxml.objectify._setElementValue (src/lxml/lxml.objectify.c:6033) File "public-api.pxi", line 76, in lxml.etree.setNodeText (src/lxml/lxml.etree.c:118529) File "apihelpers.pxi", line 650, in lxml.etree._setNodeText (src/lxml/lxml.etree.c:15144) File "apihelpers.pxi", line 1247, in lxml.etree._utf8 (src/lxml/lxml.etree.c:19727) ValueError: All strings must be XML compatible: Unicode or ASCII, no NULL bytes >>> print root root = None [ObjectifiedElement] s1 = u'' [StringElement] * py:pytype = 'str' s2 = u'' [StringElement] * py:pytype = 'str' >>> So while the assignment (string) rvalue is unacceptable an element gets created nonetheless; I'd say this is a bug. This fixes it: $ svn diff Index: src/lxml/lxml.objectify.pyx =================================================================== --- src/lxml/lxml.objectify.pyx (revision 67827) +++ src/lxml/lxml.objectify.pyx (working copy) @@ -523,9 +523,10 @@ for item in value: _appendValue(parent, tag, item) else: - new_element = cetree.makeSubElement( - parent, tag, None, None, None, None) + new_element = cetree.makeElement( + tag, parent._doc, None, None, None, None, None) _setElementValue(new_element, value) + cetree.appendChild(parent, new_element) cdef _setElementValue(_Element element, value): cdef python.PyObject* _pytype Add some test(s) and check it in? Holger -- GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01

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[lxml-dev] lxml and libxslt-1.1.25
by Stefan Behnel 28 Sep '09

28 Sep '09

Hi all, there's a problem with lxml that shows when using libxslt 1.1.25. By accident, lxml uses an internal function from libxslt (xsltProcessOneNode) that wasn't declared in a public header file. The use of this function is related to XSLT extension elements. The problem didn't really show in earlier versions because the symbol was exported, so lxml could use it on most platforms - until it was declared "static" in libxslt 1.1.25. Daniel Veillard reacted quickly and decided to officially export this function starting from 1.1.26. So while you cannot build lxml with libxslt 1.1.25, it will work perfectly with the already released libxslt 1.1.26. Sorry for any inconvenience this may cause. Stefan

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lxml - The Python XML Toolkit September 2009