11 * LP#1570388: Fix failures when serialising documents larger than 2GB in some cases.
13 * LP#1865141, GH#298: ``QName`` values were not accepted by the ``el.iter()`` method.
16 * LP#1863413, GH#297: The build failed to detect libraries on Linux that are only
17 configured via pkg-config.
18 Patch by Hugh McMaster.
27 * A new function ``indent()`` was added to insert tail whitespace for pretty-printing
33 * LP#1857794: Tail text of nodes that get removed from a document using item
34 deletion disappeared silently instead of sticking with the node that was removed.
39 * MacOS builds are 64-bit-only by default.
40 Set CFLAGS and LDFLAGS explicitly to override it.
42 * Linux/MacOS Binary wheels now use libxml2 2.9.10 and libxslt 1.1.34.
44 * LP#1840234: The package version number is now available as ``lxml.__version__``.
53 * LP#1844674: ``itertext()`` was missing tail text of comments and PIs since 4.4.0.
62 * LP#1835708: ``ElementInclude`` incorrectly rejected repeated non-recursive
63 includes as recursive.
64 Patch by Rainer Hausdorf.
73 * LP#1838252: The order of an OrderedDict was lost in 4.4.0 when passing it as
74 attrib mapping during element creation.
76 * LP#1838521: The package metadata now lists the supported Python versions.
85 * ``Element.clear()`` accepts a new keyword argument ``keep_tail=True`` to clear
86 everything but the tail text. This is helpful in some document-style use cases
87 and for clearing the current element in ``iterparse()`` and pull parsing.
89 * When creating attributes or namespaces from a dict in Python 3.6+, lxml now
90 preserves the original insertion order of that dict, instead of always sorting
91 the items by name. A similar change was made for ElementTree in CPython 3.8.
92 See https://bugs.python.org/issue34160
94 * Integer elements in ``lxml.objectify`` implement the ``__index__()`` special method.
96 * GH#269: Read-only elements in XSLT were missing the ``nsmap`` property.
97 Original patch by Jan Pazdziora.
99 * ElementInclude can now restrict the maximum inclusion depth via a ``max_depth``
100 argument to prevent content explosion. It is limited to 6 by default.
102 * The ``target`` object of the XMLParser can have ``start_ns()`` and ``end_ns()``
103 callback methods to listen to namespace declarations.
105 * The ``TreeBuilder`` has new arguments ``comment_factory`` and ``pi_factory`` to
106 pass factories for creating comments and processing instructions, as well as
107 flag arguments ``insert_comments`` and ``insert_pis`` to discard them from the
108 tree when set to false.
110 * A `C14N 2.0 <https://www.w3.org/TR/xml-c14n2/>`_ implementation was added as
111 ``etree.canonicalize()``, a corresponding ``C14NWriterTarget`` class, and
112 a ``c14n2`` serialisation method.
117 * When writing to file paths that contain the URL escape character '%', the file
118 path could wrongly be mangled by URL unescaping and thus write to a different
119 file or directory. Code that writes to file paths that are provided by untrusted
120 sources, but that must work with previous versions of lxml, should best either
121 reject paths that contain '%' characters, or otherwise make sure that the path
122 does not contain maliciously injected '%XX' URL hex escapes for paths like '../'.
124 * Assigning to Element child slices with negative step could insert the slice at
125 the wrong position, starting too far on the left.
127 * Assigning to Element child slices with overly large step size could take very
128 long, regardless of the length of the actual slice.
130 * Assigning to Element child slices of the wrong size could sometimes fail to
131 raise a ValueError (like a list assignment would) and instead assign outside
132 of the original slice bounds or leave parts of it unreplaced.
134 * The ``comment`` and ``pi`` events in ``iterwalk()`` were never triggered, and
135 instead, comments and processing instructions in the tree were reported as
136 ``start`` elements. Also, when walking an ElementTree (as opposed to its root
137 element), comments and PIs outside of the root element are now reported.
139 * LP#1827833: The RelaxNG compact syntax support was broken with recent versions
142 * LP#1758553: The HTML elements ``source`` and ``track`` were added to the list
143 of empty tags in ``lxml.html.defs``.
145 * Registering a prefix other than "xml" for the XML namespace is now rejected.
147 * Failing to write XSLT output to a file could raise a misleading exception.
148 It now raises ``IOError``.
153 * Support for Python 3.4 was removed.
155 * When using ``Element.find*()`` with prefix-namespace mappings, the empty string
156 is now accepted to define a default namespace, in addition to the previously
157 supported ``None`` prefix. Empty strings are more convenient since they keep
158 all prefix keys in a namespace dict strings, which simplifies sorting etc.
160 * The ``ElementTree.write_c14n()`` method has been deprecated in favour of the
161 long preferred ``ElementTree.write(f, method="c14n")``. It will be removed
168 * Rebuilt with Cython 0.29.13 to support Python 3.8.
174 * Rebuilt with Cython 0.29.10 to support Python 3.8.
183 * Fix leak of output buffer and unclosed files in ``_XSLTResultTree.write_output()``.
192 * Crash in 4.3.1 when appending a child subtree with certain text nodes.
197 * Built with Cython 0.29.6.
206 * LP#1814522: Crash when appending a child subtree that contains unsubstituted
212 * Built with Cython 0.29.5.
221 * The module ``lxml.sax`` is compiled using Cython in order to speed it up.
223 * GH#267: ``lxml.sax.ElementTreeProducer`` now preserves the namespace prefixes.
224 If two prefixes point to the same URI, the first prefix in alphabetical order
225 is used. Patch by Lennart Regebro.
227 * Updated ISO-Schematron implementation to 2013 version (now MIT licensed)
228 and the corresponding schema to the 2016 version (with optional "properties").
233 * GH#270, GH#271: Support for Python 2.6 and 3.3 was removed.
236 * The minimum dependency versions were raised to libxml2 2.9.2 and libxslt 1.1.27,
237 which were released in 2014 and 2012 respectively.
239 * Built with Cython 0.29.2.
248 * LP#1799755: Fix a DeprecationWarning in Py3.7+.
250 * Import warnings in Python 3.6+ were resolved.
259 * Javascript URLs that used URL escaping were not removed by the HTML cleaner.
260 Security problem found by Omar Eissa. (CVE-2018-19787)
269 * GH#259: Allow using ``pkg-config`` for build configuration.
270 Patch by Patrick Griffis.
275 * LP#1773749, GH#268: Crash when moving an element to another document with
276 ``Element.insert()``.
277 Patch by Alexander Weggerle.
286 * Reverted GH#265: lxml links against zlib as a shared library again.
295 * GH#266: Fix sporadic crash during GC when parse-time schema validation is used
296 and the parser participates in a reference cycle.
297 Original patch by Julien Greard.
299 * GH#265: lxml no longer links against zlib as a shared library, only on static builds.
300 Patch by Nehal J Wani.
309 * LP#1755825: ``iterwalk()`` failed to return the 'start' event for the initial
310 element if a tag selector is used.
312 * LP#1756314: Failure to import 4.2.0 into PyPy due to a missing library symbol.
314 * LP#1727864, GH#258: Add "-isysroot" linker option on MacOS as needed by XCode 9.
323 * GH#255: ``SelectElement.value`` returns more standard-compliant and
324 browser-like defaults for non-multi-selects. If no option is selected, the
325 value of the first option is returned (instead of None). If multiple options
326 are selected, the value of the last one is returned (instead of that of the
327 first one). If no options are present (not standard-compliant)
328 ``SelectElement.value`` still returns ``None``.
330 * GH#261: The ``HTMLParser()`` now supports the ``huge_tree`` option.
336 * LP#1551797: Some XSLT messages were not captured by the transform error log.
338 * LP#1737825: Crash at shutdown after an interrupted iterparse run with XMLSchema
348 * Rebuild with Cython 0.27.3 to improve support for Py3.7.
357 * ElementPath supports text predicates for current node, like "[.='text']".
359 * ElementPath allows spaces in predicates.
361 * Custom Element classes and XPath functions can now be registered with a
362 decorator rather than explicit dict assignments.
364 * Static Linux wheels are now built with link time optimisation (LTO) enabled.
365 This should have a beneficial impact on the overall performance by providing
366 a tighter compiler integration between lxml and libxml2/libxslt.
371 * LP#1722776: Requesting non-Element objects like comments from a document with
372 ``PythonElementClassLookup`` could fail with a TypeError.
381 * The ElementPath implementation is now compiled using Cython,
382 which speeds up the ``.find*()`` methods quite significantly.
384 * The modules ``lxml.builder``, ``lxml.html.diff`` and ``lxml.html.clean``
385 are also compiled using Cython in order to speed them up.
387 * ``xmlfile()`` supports async coroutines using ``async with`` and ``await``.
389 * ``iterwalk()`` has a new method ``skip_subtree()`` that prevents walking into
390 the descendants of the current element.
392 * ``RelaxNG.from_rnc_string()`` accepts a ``base_url`` argument to
393 allow relative resource lookups.
395 * The XSLT result object has a new method ``.write_output(file)`` that serialises
396 output data into a file according to the ``<xsl:output>`` configuration.
401 * GH#251: HTML comments were handled incorrectly by the soupparser.
404 * LP#1654544: The html5parser no longer passes the ``useChardet`` option
405 if the input is a Unicode string, unless explicitly requested. When parsing
406 files, the default is to enable it when a URL or file path is passed (because
407 the file is then opened in binary mode), and to disable it when reading from
408 a file(-like) object.
410 Note: This is a backwards incompatible change of the default configuration.
411 If your code parses byte strings/streams and depends on character detection,
412 please pass the option ``guess_charset=True`` explicitly, which already worked
413 in older lxml versions.
415 * LP#1703810: ``etree.fromstring()`` failed to parse UTF-32 data with BOM.
417 * LP#1526522: Some RelaxNG errors were not reported in the error log.
419 * LP#1567526: Empty and plain text input raised a TypeError in soupparser.
421 * LP#1710429: Uninitialised variable usage in HTML diff.
423 * LP#1415643: The closing tags context manager in ``xmlfile()`` could continue
424 to output end tags even after writing failed with an exception.
426 * LP#1465357: ``xmlfile.write()`` now accepts and ignores None as input argument.
428 * Compilation under Py3.7-pre failed due to a modified function signature.
433 * The main module source files were renamed from ``lxml.*.pyx`` to plain
434 ``*.pyx`` (e.g. ``etree.pyx``) to simplify their handling in the build
435 process. Care was taken to keep the old header files as fallbacks for
436 code that compiles against the public C-API of lxml, but it might still
437 be worth validating that third-party code does not notice this change.
446 * ``ElementTree.write()`` has a new option ``doctype`` that writes out a
447 doctype string before the serialisation, in the same way as ``tostring()``.
449 * GH#220: ``xmlfile`` allows switching output methods at an element level.
450 Patch by Burak Arslan.
452 * LP#1595781, GH#240: added a PyCapsule Python API and C-level API for
453 passing externally generated libxml2 documents into lxml.
455 * GH#244: error log entries have a new property ``path`` with an XPath
456 expression (if known, None otherwise) that points to the tree element
457 responsible for the error. Patch by Bob Kline.
459 * The namespace prefix mapping that can be used in ElementPath now injects
460 a default namespace when passing a None prefix.
465 * GH#238: Character escapes were not hex-encoded in the ``xmlfile`` serialiser.
468 * GH#229: fix for externally created XML documents. Patch by Theodore Dubois.
470 * LP#1665241, GH#228: Form data handling in lxml.html no longer strips the
471 option values specified in form attributes but only the text values.
472 Patch by Ashish Kulkarni.
474 * LP#1551797: revert previous fix for XSLT error logging as it breaks
475 multi-threaded XSLT processing.
477 * LP#1673355, GH#233: ``fromstring()`` html5parser failed to parse byte strings.
482 * The previously undocumented ``docstring`` option in ``ElementTree.write()``
483 produces a deprecation warning and will eventually be removed.
492 * LP#1551797: revert previous fix for XSLT error logging as it breaks
493 multi-threaded XSLT processing.
495 * LP#1673355, GH#233: ``fromstring()`` html5parser failed to parse byte strings.
504 * GH#218 was ineffective in Python 3.
506 * GH#222: ``lxml.html.submit_form()`` failed in Python 3.
513 * GH#220: ``xmlfile`` allows switching output methods at an element level.
514 Patch by Burak Arslan.
519 * Work around installation problems in recent Python 2.7 versions
520 due to FTP download failures.
522 * GH#219: ``xmlfile.element()`` was not properly quoting attribute values.
523 Patch by Burak Arslan.
525 * GH#218: ``xmlfile.element()`` was not properly escaping text content of
526 script/style tags. Patch by Burak Arslan.
532 * No source changes, issued only to solve problems with the
533 binary packages released for 3.7.0.
542 * GH#217: ``XMLSyntaxError`` now behaves more like its ``SyntaxError``
543 baseclass. Patch by Philipp A.
545 * GH#216: ``HTMLParser()`` now supports the same ``collect_ids`` parameter
546 as ``XMLParser()``. Patch by Burak Arslan.
548 * GH#210: Allow specifying a serialisation method in ``xmlfile.write()``.
549 Patch by Burak Arslan.
551 * GH#203: New option ``default_doctype`` in ``HTMLParser`` that allows
552 disabling the automatic doctype creation. Patch by Shadab Zafar.
554 * GH#201: Calling the method ``.set('attrname')`` without value argument
555 (or ``None``) on HTML elements creates an attribute without value that
556 serialises like ``<div attrname></div>``. Patch by Daniel Holth.
558 * GH#197: Ignore form input fields in ``form_values()`` when they are
559 marked as ``disabled`` in HTML. Patch by Kristian Klemon.
564 * GH#206: File name and line number were missing from XSLT error messages.
565 Patch by Marcus Brinkmann.
570 * Log entries no longer allow anything but plain string objects as message text
573 * ``zlib`` is included in the list of statically built libraries.
579 * GH#204, LP#1614693: build fix for MacOS-X.
585 * LP#1614603: change linker flags to build multi-linux wheels
591 * LP#1614603: release without source changes to provide cleanly built Linux wheels
600 * GH#180: Separate option ``inline_style`` for Cleaner that only removes ``style``
601 attributes instead of all styles. Patch by Christian Pedersen.
603 * GH#196: Windows build support for Python 3.5. Contribution by Maximilian Hils.
608 * GH#199: Exclude ``file`` fields from ``FormElement.form_values`` (as browsers do).
609 Patch by Tomas Divis.
611 * GH#198, LP#1568167: Try to provide base URL from ``Resolver.resolve_string()``.
612 Patch by Michael van Tellingen.
614 * GH#191: More accurate float serialisation in ``objectify.FloatElement``.
615 Patch by Holger Joukl.
617 * LP#1551797: Repair XSLT error logging. Patch by Marcus Brinkmann.
626 * GH#187: Now supports (only) version 5.x and later of PyPy.
629 * GH#181: Direct support for ``.rnc`` files in `RelaxNG()` if ``rnc2rng``
630 is installed. Patch by Dirkjan Ochtman.
635 * GH#189: Static builds honour FTP proxy configurations when downloading
636 the external libs. Patch by Youhei Sakurai.
638 * GH#186: Soupparser failed to process entities in Python 3.x.
639 Patch by Duncan Morris.
641 * GH#185: Rare encoding related ``TypeError`` on import was fixed.
651 * Unicode string results failed XPath queries in PyPy.
653 * LP#1497051: HTML target parser failed to terminate on exceptions
654 and continued parsing instead.
656 * Deprecated API usage in doctestcompare.
665 * ``cleanup_namespaces()`` accepts a new argument ``keep_ns_prefixes``
666 that does not remove definitions of the provided prefix-namespace
667 mapping from the tree.
669 * ``cleanup_namespaces()`` accepts a new argument ``top_nsmap`` that
670 moves definitions of the provided prefix-namespace mapping to the
673 * LP#1490451: ``Element`` objects gained a ``cssselect()`` method as
674 known from ``lxml.html``. Patch by Simon Sapin.
676 * API functions and methods behave and look more like Python functions,
677 which allows introspection on them etc. One side effect to be aware of
678 is that the functions now bind as methods when assigned to a class
679 variable. A quick fix is to wrap them in ``staticmethod()`` (as for
680 normal Python functions).
682 * ISO-Schematron support gained an option ``error_finder`` that allows
683 passing a filter function for picking validation errors from reports.
685 * LP#1243600: Elements in ``lxml.html`` gained a ``classes`` property
686 that provides a set-like interface to the ``class`` attribute.
687 Original patch by masklinn.
689 * LP#1341964: The soupparser now handles DOCTYPE declarations, comments
690 and processing instructions outside of the root element.
691 Patch by Olli Pottonen.
693 * LP#1421512: The ``docinfo`` of a tree was made editable to allow
694 setting and removing the public ID and system ID of the DOCTYPE.
695 Patch by Olli Pottonen.
697 * LP#1442427: More work-arounds for quirks and bugs in pypy and pypy3.
699 * ``lxml.html.soupparser`` now uses BeautifulSoup version 4 instead
700 of version 3 if available.
705 * Memory errors that occur during tree adaptations (e.g. moving subtrees
706 to foreign documents) could leave the tree in a crash prone state.
708 * Calling ``process_children()`` in an XSLT extension element without
709 an ``output_parent`` argument failed with a ``TypeError``.
712 * GH#162: Image data in HTML ``data`` URLs is considered safe and
713 no longer removed by ``lxml.html.clean`` JavaScript cleaner.
715 * GH#166: Static build could link libraries in wrong order.
717 * GH#172: Rely a bit more on libxml2 for encoding detection rather than
718 rolling our own in some cases. Patch by Olli Pottonen.
720 * GH#159: Validity checks for names and string content were tightened
721 to detect the use of illegal characters early. Patch by Olli Pottonen.
723 * LP#1421921: Comments/PIs before the DOCTYPE declaration were not
724 serialised. Patch by Olli Pottonen.
726 * LP#659367: Some HTML DOCTYPE declarations were not serialised.
727 Patch by Olli Pottonen.
729 * LP#1238503: lxml.doctestcompare is now consistent with stdlib's doctest
730 in how it uses ``+`` and ``-`` to refer to unexpected and missing output.
732 * Empty prefixes are explicitly rejected when a namespace mapping is used
733 with ElementPath to avoid hiding bugs in user code.
735 * Several problems with PyPy were fixed by switching to Cython 0.23.
744 * An ElementTree compatibility test added in lxml 3.4.3 that failed in
745 Python 3.4+ was removed again.
754 * Expression cache in ElementPath was ignored. Fix by Changaco.
756 * LP#1426868: Passing a default namespace and a prefixed namespace mapping
757 as nsmap into ``xmlfile.element()`` raised a ``TypeError``.
759 * LP#1421927: DOCTYPE system URLs were incorrectly quoted when containing
760 double quotes. Patch by Olli Pottonen.
762 * LP#1419354: meta-redirect URLs were incorrectly processed by
763 ``iterlinks()`` if preceded by whitespace.
772 * LP#1415907: Crash when creating an XMLSchema from a non-root element
775 * LP#1369362: HTML cleaning failed when hitting processing instructions
776 with pseudo-attributes.
778 * ``CDATA()`` wrapped content was rejected for tail text.
780 * CDATA sections were not serialised as tail text of the top-level element.
789 * New ``htmlfile`` HTML generator to accompany the incremental ``xmlfile``
790 serialisation API. Patch by Burak Arslan.
795 * ``lxml.sax.ElementTreeContentHandler`` did not initialise its superclass.
804 * ``xmlfile(buffered=False)`` disables output buffering and flushes the
805 content after each API operation (starting/ending element blocks or writes).
806 A new method ``xf.flush()`` can alternatively be used to explicitly flush
809 * ``lxml.html.document_fromstring`` has a new option ``ensure_head_body=True``
810 which will add an empty head and/or body element to the result document if
813 * ``lxml.html.iterlinks`` now returns links inside meta refresh tags.
815 * New ``XMLParser`` option ``collect_ids=False`` to disable ID hash table
816 creation. This can substantially speed up parsing of documents with many
817 different IDs that are not used.
819 * The parser uses per-document hash tables for XML IDs. This reduces the
820 load of the global parser dict and speeds up parsing for documents with
823 * ``ElementTree.getelementpath(element)`` returns a structural ElementPath
824 expression for the given element, which can be used for lookups later.
826 * ``xmlfile()`` accepts a new argument ``close=True`` to close file(-like)
827 objects after writing to them. Before, ``xmlfile()`` only closed the file
828 if it had opened it internally.
830 * Allow "bytearray" type for ASCII text input.
838 * LP#400588: decoding errors have become hard errors even in recovery mode.
839 Previously, they could lead to an internal tree representation in a mixed
840 encoding state, which lead to very late errors or even silently incorrect
841 behaviour during tree traversal or serialisation.
843 * Requires Python 2.6, 2.7, 3.2 or later. No longer supports
844 Python 2.4, 2.5 and 3.1, use lxml 3.3.x for those.
846 * Requires libxml2 2.7.0 or later and libxslt 1.1.23 or later,
847 use lxml 3.3.x with older versions.
856 * Prevent tree cycle creation when adding Elements as siblings.
858 * LP#1361948: crash when deallocating Element siblings without parent.
860 * LP#1354652: crash when traversing internally loaded documents in XSLT
870 * HTML cleaning could fail to strip javascript links that mix control
871 characters into the link scheme.
880 * Source line numbers above 65535 are available on Elements when
881 using libxml2 2.9 or later.
886 * ``lxml.html.fragment_fromstring()`` failed for bytes input in Py3.
898 * LP#1287118: Crash when using Element subtypes with ``__slots__``.
903 * The internal classes ``_LogEntry`` and ``_Attrib`` can no longer be
904 subclassed from Python code.
913 * The properties ``resolvers`` and ``version``, as well as the methods
914 ``set_element_class_lookup()`` and ``makeelement()``, were lost from
915 ``iterparse`` objects in 3.3.0.
917 * LP#1222132: instances of ``XMLSchema``, ``Schematron`` and ``RelaxNG``
918 did not clear their local ``error_log`` before running a validation.
920 * LP#1238500: lxml.doctestcompare mixed up "expected" and "actual" in
923 * Some file I/O tests were failing in MS-Windows due to non-portable temp
924 file usage. Initial patch by Gabi Davar.
926 * LP#910014: duplicate IDs in a document were not reported by DTD validation.
928 * LP#1185332: ``tostring(method="html")`` did not use HTML serialisation
929 semantics for trailing tail text. Initial patch by Sylvain Viollon.
931 * LP#1281139: ``.attrib`` value of Comments lost its mutation methods
932 in 3.3.0. Even though it is empty and immutable, it should still
933 provide the same interface as that returned for Elements.
945 * LP#1014290: HTML documents parsed with ``parser.feed()`` failed to find
946 elements during tag iteration.
948 * LP#1273709: Building in PyPy failed due to missing support for
949 ``PyUnicode_Compare()`` and ``PyByteArray_*()`` in PyPy's C-API.
951 * LP#1274413: Compilation in MSVC failed due to missing "stdint.h" standard
954 * LP#1274118: iterparse() failed to parse BOM prefixed files.
969 * The heuristic that distinguishes file paths from URLs was tightened
970 to produce less false negatives.
976 3.3.0beta5 (2014-01-18)
977 =======================
982 * The PEP 393 unicode parsing support gained a fallback for wchar strings
983 which might still be somewhat common on Windows systems.
988 * Several error handling problems were fixed throughout the code base that
989 could previously lead to exceptions being silently swallowed or not
992 * The C-API function ``appendChild()`` is now deprecated as it does not
993 propagate exceptions (its return type is ``void``). The new function
994 ``appendChildToElement()`` was added as a safe replacement.
996 * Passing a string into ``fromstringlist()`` raises an exception instead of
997 parsing the string character by character.
1002 * Document cleanup code was simplified using the new GC features in
1006 3.3.0beta4 (2014-01-12)
1007 =======================
1015 * The (empty) value returned by the ``attrib`` property of Entity and Comment
1016 objects was mutable.
1018 * Element class lookup wasn't available for the new pull parsers or when using
1019 a custom parser target.
1021 * Setting Element attributes on instantiation with both the ``attrib`` argument
1022 and keyword arguments could modify the mapping passed as ``attrib``.
1024 * LP#1266171: DTDs instantiated from internal/external subsets (i.e. through
1025 the docinfo property) lost their attribute declarations.
1030 * Built with Cython 0.20pre (gitrev 012ae82eb) to prepare support for
1034 3.3.0beta3 (2014-01-02)
1035 =======================
1040 * Unicode string parsing was optimised for Python 3.3 (PEP 393).
1045 * HTML parsing of Unicode strings could misdecode the input on some platforms.
1047 * Crash in xmlfile() when closing open elements out of order in an error case.
1053 3.3.0beta2 (2013-12-20)
1054 =======================
1059 * ``iterparse()`` supports the ``recover`` option.
1064 * Crash in ``iterparse()`` for HTML parsing.
1066 * Crash in target parsing with attributes.
1071 * The safety check in the read-only tree implementation (e.g. used by
1072 ``PythonElementClassLookup``) raises a more appropriate ``ReferenceError``
1073 for illegal access after tree disposal instead of an ``AssertionError``.
1074 This should only impact test code that specifically checks the original
1078 3.3.0beta1 (2013-12-12)
1079 =======================
1084 * New option ``handle_failures`` in ``make_links_absolute()`` and
1085 ``resolve_base_href()`` (lxml.html) that enables ignoring or
1086 discarding links that fail to parse as URLs.
1088 * New parser classes ``XMLPullParser`` and ``HTMLPullParser`` for
1089 incremental parsing, as implemented for ElementTree in Python 3.4.
1091 * ``iterparse()`` enables recovery mode by default for HTML parsing
1097 * LP#1255132: crash when trying to run validation over non-Element (e.g.
1100 * Error messages in the log and in exception messages that originated
1101 from libxml2 could accidentally be picked up from preceding warnings
1102 instead of the actual error.
1104 * The ``ElementMaker`` in lxml.objectify did not accept a dict as
1105 argument for adding attributes to the element it's building. This
1106 works as in lxml.builder now.
1108 * LP#1228881: ``repr(XSLTAccessControl)`` failed in Python 3.
1110 * Raise ``ValueError`` when trying to append an Element to itself or
1111 to one of its own descendants, instead of running into an infinite
1114 * LP#1206077: htmldiff discarded whitespace from the output.
1116 * Compressed plain-text serialisation to file-like objects was broken.
1118 * lxml.html.formfill: Fix textarea form filling.
1119 The textarea used to be cleared before the new content was set,
1120 which removed the name attribute.
1126 * Some basic API classes use freelists internally for faster
1127 instantiation. This can speed up some ``iterparse()`` scenarios,
1130 * ``iterparse()`` was rewritten to use the new ``*PullParser``
1131 classes internally instead of being a parser itself.
1143 * Crash in xmlfile() when closing open elements out of order in an error case.
1145 * Crash in target parsing with attributes.
1147 * LP#1255132: crash when trying to run validation over non-Element (e.g.
1163 * Memory leak when creating an XPath evaluator in a thread.
1165 * LP#1228881: ``repr(XSLTAccessControl)`` failed in Python 3.
1167 * Raise ``ValueError`` when trying to append an Element to itself or
1168 to one of its own descendants.
1170 * LP#1206077: htmldiff discarded whitespace from the output.
1172 * Compressed plain-text serialisation to file-like objects was broken.
1184 * Fix support for Python 2.4 which was lost in 3.2.2.
1196 * LP#1185701: spurious XMLSyntaxError after finishing iterparse().
1198 * Crash in lxml.objectify during xsi annotation.
1203 * Return values of user provided element class lookup methods are now
1204 validated against the type of the XML node they represent to prevent
1205 API class mismatches.
1214 * The methods ``apply_templates()`` and ``process_children()`` of XSLT
1215 extension elements have gained two new boolean options ``elements_only``
1216 and ``remove_blank_text`` that discard either all strings or whitespace-only
1217 strings from the result list.
1222 * When moving Elements to another tree, the namespace cleanup mechanism
1223 no longer drops namespace prefixes from attributes for which it finds
1224 a default namespace declaration, to prevent them from appearing as
1225 unnamespaced attributes after serialisation.
1227 * Returning non-type objects from a custom class lookup method could lead
1230 * Instantiating and using subtypes of Comments and ProcessingInstructions
1246 * LP#690319: Leading whitespace could change the behaviour of the string
1247 parsing functions in ``lxml.html``.
1249 * LP#599318: The string parsing functions in ``lxml.html`` are more robust
1250 in the face of uncommon HTML content like framesets or missing body tags.
1251 Patch by Stefan Seelmann.
1253 * LP#712941: I/O errors while trying to access files with paths that contain
1254 non-ASCII characters could raise ``UnicodeDecodeError`` instead of properly
1255 reporting the ``IOError``.
1257 * LP#673205: Parsing from in-memory strings disabled network access in the
1258 default parser and made subsequent attempts to parse from a URL fail.
1260 * LP#971754: lxml.html.clean appends 'nofollow' to 'rel' attributes instead
1261 of overwriting the current value.
1263 * LP#715687: lxml.html.clean no longer discards scripts that are explicitly
1264 allowed by the user provided whitelist. Patch by Christine Koppelt.
1279 * LP#1136509: Passing attributes through the namespace-unaware API of
1280 the sax bridge (i.e. the ``handler.startElement()`` method) failed
1281 with a ``TypeError``. Patch by Mike Bayer.
1283 * LP#1123074: Fix serialisation error in XSLT output when converting
1284 the result tree to a Unicode string.
1286 * GH#105: Replace illegal usage of ``xmlBufLength()`` in libxml2 2.9.0
1287 by properly exported API function ``xmlBufUse()``.
1302 * LP#1160386: Write access to ``lxml.html.FormElement.fields`` raised
1303 an AttributeError in Py3.
1305 * Illegal memory access during cleanup in incremental xmlfile writer.
1310 * The externally useless class ``lxml.etree._BaseParser`` was removed
1311 from the module dict.
1320 * GH#89: lxml.html.clean allows overriding the set of attributes that it
1321 considers 'safe'. Patch by Francis Devereux.
1326 * LP#1104370: ``copy.copy(el.attrib)`` raised an exception. It now returns
1327 a copy of the attributes as a plain Python dict.
1329 * GH#95: When used with namespace prefixes, the ``el.find*()`` methods
1330 always used the first namespace mapping that was provided for each
1331 path expression instead of using the one that was actually passed
1332 in for the current run.
1334 * LP#1092521, GH#91: Fix undefined C symbol in Python runtimes compiled
1335 without threading support. Patch by Ulrich Seidl.
1341 3.1beta1 (2012-12-21)
1342 =====================
1347 * New build-time option ``--with-unicode-strings`` for Python 2 that
1348 makes the API always return Unicode strings for names and text
1349 instead of byte strings for plain ASCII content.
1351 * New incremental XML file writing API ``etree.xmlfile()``.
1353 * E factory in lxml.objectify is callable to simplify the creation of
1354 tags with non-identifier names without having to resort to getattr().
1359 * When starting from a non-namespaced element in lxml.objectify, searching
1360 for a child without explicitly specifying a namespace incorrectly found
1361 namespaced elements with the requested local name, instead of restricting
1362 the search to non-namespaced children.
1364 * GH#85: Deprecation warnings were fixed for Python 3.x.
1366 * GH#33: lxml.html.fromstring() failed to accept bytes input in Py3.
1368 * LP#1080792: Static build of libxml2 2.9.0 failed due to missing file.
1373 * The externally useless class ``_ObjectifyElementMakerCaller`` was
1374 removed from the module API of lxml.objectify.
1376 * LP#1075622: lxml.builder is faster for adding text to elements with
1377 many children. Patch by Anders Hammarquist.
1389 * Fix crash during interpreter shutdown by switching to Cython 0.17.3 for building.
1404 * LP#1065924: Element proxies could disappear during garbage collection
1405 in PyPy without proper cleanup.
1407 * GH#71: Failure to work with libxml2 2.6.x.
1409 * LP#1065139: static MacOS-X build failed in Py3.
1424 * End-of-file handling was incorrect in iterparse() when reading from
1425 a low-level C file stream and failed in libxml2 2.9.0 due to its
1426 improved consistency checks.
1431 * The build no longer uses Cython by default unless the generated C files
1432 are missing. To use Cython, pass the option "--with-cython". To ignore
1433 the fatal build error when Cython is required but not available (e.g. to
1434 run special setup.py commands that do not actually run a build), pass
1438 3.0beta1 (2012-09-26)
1439 =====================
1444 * Python level access to (optional) libxml2 memory debugging features
1445 to simplify debugging of memory leaks etc.
1450 * Fix a memory leak in XPath by switching to Cython 0.17.1.
1452 * Some tests were adapted to work with PyPy.
1457 * The code was adapted to work with the upcoming libxml2 2.9.0 release.
1460 3.0alpha2 (2012-08-23)
1461 ======================
1466 * The ``.iter()`` method of elements now accepts ``tag`` arguments like
1467 ``"{*}name"`` to search for elements with a given local name in any
1468 namespace. With this addition, all combinations of wildcards now work
1470 ``"{ns}name"``, ``"{}name"``, ``"{*}name"``, ``"{ns}*"``, ``"{}*"``
1471 and ``"{*}*"``. Note that ``"name"`` is equivalent to ``"{}name"``,
1472 but ``"*"`` is ``"{*}*"``.
1473 The same change applies to the ``.getiterator()``, ``.itersiblings()``,
1474 ``.iterancestors()``, ``.iterdescendants()``, ``.iterchildren()``
1475 and ``.itertext()`` methods;the ``strip_attributes()``,
1476 ``strip_elements()`` and ``strip_tags()`` functions as well as the
1477 ``iterparse()`` class. Patch by Simon Sapin.
1479 * C14N allows specifying the inclusive prefixes to be promoted
1480 to top-level during exclusive serialisation.
1485 * Passing long Unicode strings into the ``feed()`` parser interface
1486 failed to read the entire string.
1492 3.0alpha1 (2012-07-31)
1493 ======================
1498 * Initial support for building in PyPy (through cpyext).
1500 * DTD objects gained an API that allows read access to their
1503 * ``xpathgrep.py`` gained support for parsing line-by-line (e.g.
1504 from grep output) and for surrounding the output with a new root
1507 * ``E-factory`` in ``lxml.builder`` accepts subtypes of known data
1508 types (such as string subtypes) when building elements around them.
1510 * Tree iteration and ``iterparse()`` with a selective ``tag``
1511 argument supports passing a set of tags. Tree nodes will be
1512 returned by the iterators if they match any of the tags.
1517 * The ``.find*()`` methods in ``lxml.objectify`` no longer use XPath
1518 internally, which makes them faster in many cases (especially when
1519 short circuiting after a single or couple of elements) and fixes
1520 some behavioural differences compared to ``lxml.etree``. Note that
1521 this means that they no longer support arbitrary XPath expressions
1522 but only the subset that the ``ElementPath`` language supports.
1523 The previous implementation was also redundant with the normal
1524 XPath support, which can be used as a replacement.
1526 * ``el.find('*')`` could accidentally return a comment or processing
1527 instruction that happened to be in the wrong spot. (Same for the
1528 other ``.find*()`` methods.)
1530 * The error logging is less intrusive and avoids a global setup where
1533 * Fixed undefined names in html5lib parser.
1535 * ``xpathgrep.py`` did not work in Python 3.
1537 * ``Element.attrib.update()`` did not accept an ``attrib`` of
1538 another Element as parameter.
1540 * For subtypes of ``ElementBase`` that make the ``.text`` or ``.tail``
1541 properties immutable (as in objectify, for example), inserting text
1542 when creating Elements through the E-Factory feature of the class
1543 constructor would fail with an exception, stating that the text
1549 * The code base was overhauled to properly use 'const' where the API
1550 of libxml2 and libxslt requests it. This also has an impact on the
1551 public C-API of lxml itself, as defined in ``etreepublic.pxd``, as
1552 well as the provided declarations in the ``lxml/includes/`` directory.
1553 Code that uses these declarations may have to be adapted. On the
1554 plus side, this fixes several C compiler warnings, also for user
1555 code, thus making it easier to spot real problems again.
1557 * The functionality of "lxml.cssselect" was moved into a separate PyPI
1558 package called "cssselect". To continue using it, you must install
1559 that package separately. The "lxml.cssselect" module is still
1560 available and provides the same interface, provided the "cssselect"
1561 package can be imported at runtime.
1563 * Element attributes passed in as an ``attrib`` dict or as keyword
1564 arguments are now sorted by (namespaced) name before being created
1565 to make their order predictable for serialisation and iteration.
1566 Note that adding or deleting attributes afterwards does not take
1567 that order into account, i.e. setting a new attribute appends it
1568 after the existing ones.
1570 * Several classes that are for internal use only were removed
1571 from the ``lxml.etree`` module dict:
1572 ``_InputDocument, _ResolverRegistry, _ResolverContext, _BaseContext,
1573 _ExsltRegExp, _IterparseContext, _TempStore, _ExceptionContext,
1574 __ContentOnlyElement, _AttribIterator, _NamespaceRegistry,
1575 _ClassNamespaceRegistry, _FunctionNamespaceRegistry,
1576 _XPathFunctionNamespaceRegistry, _ParserDictionaryContext,
1577 _FileReaderContext, _ParserContext, _PythonSaxParserTarget,
1578 _TargetParserContext, _ReadOnlyProxy, _ReadOnlyPIProxy,
1579 _ReadOnlyEntityProxy, _ReadOnlyElementProxy, _OpaqueNodeWrapper,
1580 _OpaqueDocumentWrapper, _ModifyContentOnlyProxy,
1581 _ModifyContentOnlyPIProxy, _ModifyContentOnlyEntityProxy,
1582 _AppendOnlyElementProxy, _SaxParserContext, _FilelikeWriter,
1583 _ParserSchemaValidationContext, _XPathContext,
1584 _XSLTResolverContext, _XSLTContext, _XSLTQuotedStringParam``
1586 * Several internal classes can no longer be inherited from:
1587 ``_InputDocument, _ResolverRegistry, _ExsltRegExp, _ElementUnicodeResult,
1588 _IterparseContext, _TempStore, _AttribIterator, _ClassNamespaceRegistry,
1589 _XPathFunctionNamespaceRegistry, _ParserDictionaryContext,
1590 _FileReaderContext, _PythonSaxParserTarget, _TargetParserContext,
1591 _ReadOnlyPIProxy, _ReadOnlyEntityProxy, _OpaqueDocumentWrapper,
1592 _ModifyContentOnlyPIProxy, _ModifyContentOnlyEntityProxy,
1593 _AppendOnlyElementProxy, _FilelikeWriter, _ParserSchemaValidationContext,
1594 _XPathContext, _XSLTResolverContext, _XSLTContext, _XSLTQuotedStringParam,
1595 _XSLTResultTree, _XSLTProcessingInstruction``
1607 * Passing long Unicode strings into the ``feed()`` parser interface
1608 failed to read the entire string.
1623 * Crash when merging text nodes in ``element.remove()``.
1625 * Crash in sax/target parser when reporting empty doctype.
1640 * Crash when building an nsmap (Element property) with empty
1643 * Crash due to race condition when errors (or user messages) occur
1644 during threaded XSLT processing.
1646 * XSLT stylesheet compilation could ignore compilation errors.
1658 * ``lxml.html.tostring()`` gained new serialisation options
1659 ``with_tail`` and ``doctype``.
1664 * Fixed a crash when using ``iterparse()`` for HTML parsing and
1665 requesting start events.
1667 * Fixed parsing of more selectors in cssselect. Whitespace before
1668 pseudo-elements and pseudo-classes is significant as it is a
1669 descendant combinator.
1670 "E :pseudo" should parse the same as "E \*:pseudo", not "E:pseudo".
1671 Patch by Simon Sapin.
1673 * lxml.html.diff no longer raises an exception when hitting
1674 'img' tags without 'src' attribute.
1686 * ``lxml.objectify.deannotate()`` has a new boolean option
1687 ``cleanup_namespaces`` to remove the objectify namespace
1688 declarations (and generally clean up the namespace declarations)
1689 after removing the type annotations.
1691 * ``lxml.objectify`` gained its own ``SubElement()`` function as a
1692 copy of ``etree.SubElement`` to avoid an otherwise redundant import
1693 of ``lxml.etree`` on the user side.
1698 * Fixed the "descendant" bug in cssselect a second time (after a first
1699 fix in lxml 2.3.1). The previous change resulted in a serious
1700 performance regression for the XPath based evaluation of the
1701 translated expression. Note that this breaks the usage of some of
1702 the generated XPath expressions as XSLT location paths that
1703 previously worked in 2.3.1.
1705 * Fixed parsing of some selectors in cssselect. Whitespace after combinators
1706 ">", "+" and "~" is now correctly ignored. Previously it was parsed as
1707 a descendant combinator. For example, "div> .foo" was parsed the same as
1708 "div>* .foo" instead of "div>.foo". Patch by Simon Sapin.
1720 * New option ``kill_tags`` in ``lxml.html.clean`` to remove specific
1721 tags and their content (i.e. their whole subtree).
1723 * ``pi.get()`` and ``pi.attrib`` on processing instructions to parse
1724 pseudo-attributes from the text content of processing instructions.
1726 * ``lxml.get_include()`` returns a list of include paths that can be
1727 used to compile external C code against lxml.etree. This is
1728 specifically required for statically linked lxml builds when code
1729 needs to compile against the exact same header file versions as lxml
1732 * ``Resolver.resolve_file()`` takes an additional option
1733 ``close_file`` that configures if the file(-like) object will be
1734 closed after reading or not. By default, the file will be closed,
1735 as the user is not expected to keep a reference to it.
1740 * HTML cleaning didn't remove 'data:' links.
1742 * The html5lib parser integration now uses the 'official'
1743 implementation in html5lib itself, which makes it work with newer
1744 releases of the library.
1746 * In ``lxml.sax``, ``endElementNS()`` could incorrectly reject a plain
1747 tag name when the corresponding start event inferred the same plain
1748 tag name to be in the default namespace.
1750 * When an open file-like object is passed into ``parse()`` or
1751 ``iterparse()``, the parser will no longer close it after use. This
1752 reverts a change in lxml 2.3 where all files would be closed. It is
1753 the users responsibility to properly close the file(-like) object,
1754 also in error cases.
1756 * Assertion error in lxml.html.cleaner when discarding top-level elements.
1758 * In lxml.cssselect, use the xpath 'A//B' (short for
1759 'A/descendant-or-self::node()/B') instead of 'A/descendant::B' for
1760 the css descendant selector ('A B'). This makes a few edge cases
1761 like ``"div *:last-child"`` consistent with the selector behavior in
1762 WebKit and Firefox, and makes more css expressions valid location
1763 paths (for use in xsl:template match).
1765 * In lxml.html, non-selected ``<option>`` tags no longer show up in the
1766 collected form values.
1768 * Adding/removing ``<option>`` values to/from a multiple select form
1769 field properly selects them and unselects them.
1774 * Static builds can specify the download directory with the
1775 ``--download-dir`` option.
1784 * When looking for children, ``lxml.objectify`` takes '{}tag' as
1785 meaning an empty namespace, as opposed to the parent namespace.
1790 * When finished reading from a file-like object, the parser
1791 immediately calls its ``.close()`` method.
1793 * When finished parsing, ``iterparse()`` immediately closes the input
1796 * Work-around for libxml2 bug that can leave the HTML parser in a
1797 non-functional state after parsing a severely broken document (fixed
1800 * ``marque`` tag in HTML cleanup code is correctly named ``marquee``.
1805 * Some public functions in the Cython-level C-API have more explicit
1809 2.3beta1 (2010-09-06)
1810 =====================
1818 * Crash in newer libxml2 versions when moving elements between
1819 documents that had attributes on replaced XInclude nodes.
1821 * ``XMLID()`` function was missing the optional ``parser`` and
1822 ``base_url`` parameters.
1824 * Searching for wildcard tags in ``iterparse()`` was broken in Py3.
1826 * ``lxml.html.open_in_browser()`` didn't work in Python 3 due to the
1827 use of os.tempnam. It now takes an optional 'encoding' parameter.
1833 2.3alpha2 (2010-07-24)
1834 ======================
1842 * Crash in XSLT when generating text-only result documents with a
1843 stylesheet created in a different thread.
1848 * ``repr()`` of Element objects shows the hex ID with leading 0x
1849 (following ElementTree 1.3).
1852 2.3alpha1 (2010-06-19)
1853 ======================
1858 * Keyword argument ``namespaces`` in ``lxml.cssselect.CSSSelector()``
1859 to pass a prefix-to-namespace mapping for the selector.
1861 * New function ``lxml.etree.register_namespace(prefix, uri)`` that
1862 globally registers a namespace prefix for a namespace that newly
1863 created Elements in that namespace will use automatically. Follows
1866 * Support 'unicode' string name as encoding parameter in
1867 ``tostring()``, following ElementTree 1.3.
1869 * Support 'c14n' serialisation method in ``ElementTree.write()`` and
1870 ``tostring()``, following ElementTree 1.3.
1872 * The ElementPath expression syntax (``el.find*()``) was extended to
1873 match the upcoming ElementTree 1.3 that will ship in the standard
1874 library of Python 3.2/2.7. This includes extended support for
1875 predicates as well as namespace prefixes (as known from XPath).
1877 * During regular XPath evaluation, various ESXLT functions are
1878 available within their namespace when using libxslt 1.1.26 or later.
1880 * Support passing a readily configured logger instance into
1881 ``PyErrorLog``, instead of a logger name.
1883 * On serialisation, the new ``doctype`` parameter can be used to
1884 override the DOCTYPE (internal subset) of the document.
1886 * New parameter ``output_parent`` to ``XSLTExtension.apply_templates()``
1887 to append the resulting content directly to an output element.
1889 * ``XSLTExtension.process_children()`` to process the content of the
1890 XSLT extension element itself.
1892 * ISO-Schematron support based on the de-facto Schematron reference
1893 'skeleton implementation'.
1895 * XSLT objects now take XPath object as ``__call__`` stylesheet
1898 * Enable path caching in ElementPath (``el.find*()``) to avoid parsing
1901 * Setting the value of a namespaced attribute always uses a prefixed
1902 namespace instead of the default namespace even if both declare the
1903 same namespace URI. This avoids serialisation problems when an
1904 attribute from a default namespace is set on an element from a
1905 different namespace.
1907 * XSLT extension elements: support for XSLT context nodes other than
1908 elements: document root, comments, processing instructions.
1910 * Support for strings (in addition to Elements) in node-sets returned
1911 by extension functions.
1913 * Forms that lack an ``action`` attribute default to the base URL of
1914 the document on submit.
1916 * XPath attribute result strings have an ``attrname`` property.
1918 * Namespace URIs get validated against RFC 3986 at the API level
1919 (required by the XML namespace specification).
1921 * Target parsers show their target object in the ``.target`` property
1922 (compatible with ElementTree).
1927 * API is hardened against invalid proxy instances to prevent crashes
1928 due to incorrectly instantiated Element instances.
1930 * Prevent crash when instantiating ``CommentBase`` and friends.
1932 * Export ElementTree compatible XML parser class as
1933 ``XMLTreeBuilder``, as it is called in ET 1.2.
1935 * ObjectifiedDataElements in lxml.objectify were not hashable. They
1936 now use the hash value of the underlying Python value (string,
1937 number, etc.) to which they compare equal.
1939 * Parsing broken fragments in lxml.html could fail if the fragment
1940 contained an orphaned closing '</div>' tag.
1942 * Using XSLT extension elements around the root of the output document
1945 * ``lxml.cssselect`` did not distinguish between ``x[attr="val"]`` and
1946 ``x [attr="val"]`` (with a space). The latter now matches the
1947 attribute independent of the element.
1949 * Rewriting multiple links inside of HTML text content could end up
1950 replacing unrelated content as replacements could impact the
1951 reported position of subsequent matches. Modifications are now
1952 simplified by letting the ``iterlinks()`` generator in ``lxml.html``
1953 return links in reversed order if they appear inside the same text
1954 node. Thus, replacements and link-internal modifications no longer
1955 change the position of links reported afterwards.
1957 * The ``.value`` attribute of ``textarea`` elements in lxml.html did
1958 not represent the complete raw value (including child tags etc.). It
1959 now serialises the complete content on read and replaces the
1960 complete content by a string on write.
1962 * Target parser didn't call ``.close()`` on the target object if
1963 parsing failed. Now it is guaranteed that ``.close()`` will be
1964 called after parsing, regardless of the outcome.
1969 * Official support for Python 3.1.2 and later.
1971 * Static MS Windows builds can now download their dependencies
1974 * ``Element.attrib`` no longer uses a cyclic reference back to its
1975 Element object. It therefore no longer requires the garbage
1976 collector to clean up.
1978 * Static builds include libiconv, in addition to libxml2 and libxslt.
1987 * Crash in newer libxml2 versions when moving elements between
1988 documents that had attributes on replaced XInclude nodes.
1990 * Import fix for urljoin in Python 3.1+.
1999 * Crash in XSLT when generating text-only result documents with a
2000 stylesheet created in a different thread.
2009 * Fixed several Python 3 regressions by building with Cython 0.11.3.
2018 * Support for running XSLT extension elements on the input root node
2019 (e.g. in a template matching on "/").
2024 * Crash in XPath evaluation when reading smart strings from a document
2025 other than the original context document.
2027 * Support recent versions of html5lib by not requiring its
2028 ``XHTMLParser`` in ``htmlparser.py`` anymore.
2030 * Manually instantiating the custom element classes in
2031 ``lxml.objectify`` could crash.
2033 * Invalid XML text characters were not rejected by the API when they
2034 appeared in unicode strings directly after non-ASCII characters.
2036 * lxml.html.open_http_urllib() did not work in Python 3.
2038 * The functions ``strip_tags()`` and ``strip_elements()`` in
2039 ``lxml.etree`` did not remove all occurrences of a tag in all cases.
2041 * Crash in XSLT extension elements when the XSLT context node is not
2051 * Static build of libxml2/libxslt was broken.
2063 * The ``resolve_entities`` option did not work in the incremental feed
2066 * Looking up and deleting attributes without a namespace could hit a
2067 namespaced attribute of the same name instead.
2069 * Late errors during calls to ``SubElement()`` (e.g. attribute related
2070 ones) could leave a partially initialised element in the tree.
2072 * Modifying trees that contain parsed entity references could result
2073 in an infinite loop.
2075 * ObjectifiedElement.__setattr__ created an empty-string child element when the
2076 attribute value was rejected as a non-unicode/non-ascii string
2078 * Syntax errors in ``lxml.cssselect`` could result in misleading error
2081 * Invalid syntax in CSS expressions could lead to an infinite loop in
2082 the parser of ``lxml.cssselect``.
2084 * CSS special character escapes were not properly handled in
2087 * CSS Unicode escapes were not properly decoded in ``lxml.cssselect``.
2089 * Select options in HTML forms that had no explicit ``value``
2090 attribute were not handled correctly. The HTML standard dictates
2091 that their value is defined by their text content. This is now
2092 supported by lxml.html.
2094 * XPath raised a TypeError when finding CDATA sections. This is now
2097 * Calling ``help(lxml.objectify)`` didn't work at the prompt.
2099 * The ``ElementMaker`` in lxml.objectify no longer defines the default
2100 namespaces when annotation is disabled.
2102 * Feed parser failed to honour the 'recover' option on parse errors.
2104 * Diverting the error logging to Python's logging system was broken.
2116 * New helper functions ``strip_attributes()``, ``strip_elements()``,
2117 ``strip_tags()`` in lxml.etree to remove attributes/subtrees/tags
2123 * Namespace cleanup on subtree insertions could result in missing
2124 namespace declarations (and potentially crashes) if the element
2125 defining a namespace was deleted and the namespace was not used by
2126 the top element of the inserted subtree but only in deeper subtrees.
2128 * Raising an exception from a parser target callback didn't always
2129 terminate the parser.
2131 * Only {true, false, 1, 0} are accepted as the lexical representation for
2132 BoolElement ({True, False, T, F, t, f} not any more), restoring lxml <= 2.0
2145 * Injecting default attributes into a document during XML Schema
2146 validation (also at parse time).
2148 * Pass ``huge_tree`` parser option to disable parser security
2149 restrictions imposed by libxml2 2.7.
2154 * The script for statically building libxml2 and libxslt didn't work
2157 * ``XMLSchema()`` also passes invalid schema documents on to libxml2
2158 for parsing (which could lead to a crash before release 2.6.24).
2170 * Support for ``standalone`` flag in XML declaration through
2171 ``tree.docinfo.standalone`` and by passing ``standalone=True/False``
2177 * Crash when parsing an XML Schema with external imports from a
2181 2.2beta4 (2009-02-27)
2182 =====================
2187 * Support strings and instantiable Element classes as child arguments
2188 to the constructor of custom Element classes.
2190 * GZip compression support for serialisation to files and file-like
2196 * Deep-copying an ElementTree copied neither its sibling PIs and
2197 comments nor its internal/external DTD subsets.
2199 * Soupparser failed on broken attributes without values.
2201 * Crash in XSLT when overwriting an already defined attribute using
2204 * Crash bug in exception handling code under Python 3. This was due
2205 to a problem in Cython, not lxml itself.
2207 * ``lxml.html.FormElement._name()`` failed for non top-level forms.
2209 * ``TAG`` special attribute in constructor of custom Element classes
2210 was evaluated incorrectly.
2215 * Official support for Python 3.0.1.
2217 * ``Element.findtext()`` now returns an empty string instead of None
2218 for Elements without text content.
2221 2.2beta3 (2009-02-17)
2222 =====================
2227 * ``XSLT.strparam()`` class method to wrap quoted string parameters
2228 that require escaping.
2233 * Memory leak in XPath evaluators.
2235 * Crash when parsing indented XML in one thread and merging it with
2236 other documents parsed in another thread.
2238 * Setting the ``base`` attribute in ``lxml.objectify`` from a unicode
2241 * Fixes following changes in Python 3.0.1.
2243 * Minor fixes for Python 3.
2248 * The global error log (which is copied into the exception log) is now
2249 local to a thread, which fixes some race conditions.
2251 * More robust error handling on serialisation.
2254 2.2beta2 (2009-01-25)
2255 =====================
2260 * Potential memory leak on exception handling. This was due to a
2261 problem in Cython, not lxml itself.
2263 * ``iter_links`` (and related link-rewriting functions) in
2264 ``lxml.html`` would interpret CSS like ``url("link")`` incorrectly
2265 (treating the quotation marks as part of the link).
2267 * Failing import on systems that have an ``io`` module.
2276 * Potential memory leak on exception handling. This was due to a
2277 problem in Cython, not lxml itself.
2279 * Failing import on systems that have an ``io`` module.
2282 2.2beta1 (2008-12-12)
2283 =====================
2288 * Allow ``lxml.html.diff.htmldiff`` to accept Element objects, not
2294 * Crash when using an XPath evaluator in multiple threads.
2296 * Fixed missing whitespace before ``Link:...`` in ``lxml.html.diff``.
2301 * Export ``lxml.html.parse``.
2310 * Crash when using an XPath evaluator in multiple threads.
2319 * Crash when using an XPath evaluator in multiple threads.
2322 2.2alpha1 (2008-11-23)
2323 ======================
2328 * Support for XSLT result tree fragments in XPath/XSLT extension
2331 * QName objects have new properties ``namespace`` and ``localname``.
2333 * New options for exclusive C14N and C14N without comments.
2335 * Instantiating a custom Element classes creates a new Element.
2340 * XSLT didn't inherit the parse options of the input document.
2342 * 0-bytes could slip through the API when used inside of Unicode
2345 * With ``lxml.html.clean.autolink``, links with balanced parenthesis,
2346 that end in a parenthesis, will be linked in their entirety (typical
2347 with Wikipedia links).
2362 * Ref-count leaks when lxml enters a try-except statement while an
2363 outside exception lives in sys.exc_*(). This was due to a problem in
2364 Cython, not lxml itself.
2366 * Parser Unicode decoding errors could get swallowed by other
2369 * Name/import errors in some Python modules.
2371 * Internal DTD subsets that did not specify a system or public ID were
2372 not serialised and did not appear in the docinfo property of
2375 * Fix a pre-Py3k warning when parsing from a gzip file in Py2.6.
2377 * Test suite fixes for libxml2 2.7.
2379 * Resolver.resolve_string() did not work for non-ASCII byte strings.
2381 * Resolver.resolve_file() was broken.
2383 * Overriding the parser encoding didn't work for many encodings.
2395 * Ref-count leaks when lxml enters a try-except statement while an
2396 outside exception lives in sys.exc_*(). This was due to a problem in
2397 Cython, not lxml itself.
2406 * lxml.etree now tries to find the absolute path name of files when
2407 parsing from a file-like object. This helps custom resolvers when
2408 resolving relative URLs, as lixbml2 can prepend them with the path
2409 of the source document.
2414 * Memory problem when passing documents between threads.
2416 * Target parser did not honour the ``recover`` option and raised an
2417 exception instead of calling ``.close()`` on the target.
2429 * Memory problem when passing documents between threads.
2431 * Target parser did not honour the ``recover`` option and raised an
2432 exception instead of calling ``.close()`` on the target.
2444 * Crash when parsing XSLT stylesheets in a thread and using them in
2447 * Encoding problem when including text with ElementInclude under
2460 * ``lxml.html.rewrite_links()`` strips links to work around documents
2461 with whitespace in URL attributes.
2466 * Crash when parsing XSLT stylesheets in a thread and using them in
2469 * CSS selector parser dropped remaining expression after a function
2482 * Smart strings can be switched off in XPath (``smart_strings``
2485 * ``lxml.html.rewrite_links()`` strips links to work around documents
2486 with whitespace in URL attributes.
2491 * Custom resolvers were not used for XMLSchema includes/imports and
2492 XInclude processing.
2494 * CSS selector parser dropped remaining expression after a function
2500 * ``objectify.enableRecursiveStr()`` was removed, use
2501 ``objectify.enable_recursive_str()`` instead
2503 * Speed-up when running XSLTs on documents from other threads
2512 * Pickling ``ElementTree`` objects in lxml.objectify.
2517 * Descending dot-separated classes in CSS selectors were not resolved
2520 * ``ElementTree.parse()`` didn't handle target parser result.
2522 * Potential threading problem in XInclude.
2524 * Crash in Element class lookup classes when the __init__() method of
2525 the super class is not called from Python subclasses.
2530 * Non-ASCII characters in attribute values are no longer escaped on
2534 2.1beta3 (2008-06-19)
2535 =====================
2540 * Major overhaul of ``tools/xpathgrep.py`` script.
2542 * Pickling ``ElementTree`` objects in lxml.objectify.
2544 * Support for parsing from file-like objects that return unicode
2547 * New function ``etree.cleanup_namespaces(el)`` that removes unused
2548 namespace declarations from a (sub)tree (experimental).
2550 * XSLT results support the buffer protocol in Python 3.
2552 * Polymorphic functions in ``lxml.html`` that accept either a tree or
2553 a parsable string will return either a UTF-8 encoded byte string, a
2554 unicode string or a tree, based on the type of the input.
2555 Previously, the result was always a byte string or a tree.
2557 * Support for Python 2.6 and 3.0 beta.
2559 * File name handling now uses a heuristic to convert between byte
2560 strings (usually filenames) and unicode strings (usually URLs).
2562 * Parsing from a plain file object frees the GIL under Python 2.x.
2564 * Running ``iterparse()`` on a plain file (or filename) frees the GIL
2565 on reading under Python 2.x.
2567 * Conversion functions ``html_to_xhtml()`` and ``xhtml_to_html()`` in
2568 lxml.html (experimental).
2570 * Most features in lxml.html work for XHTML namespaced tag names
2576 * ``ElementTree.parse()`` didn't handle target parser result.
2578 * Crash in Element class lookup classes when the __init__() method of
2579 the super class is not called from Python subclasses.
2581 * A number of problems related to unicode/byte string conversion of
2582 filenames and error messages were fixed.
2584 * Building on MacOS-X now passes the "flat_namespace" option to the C
2585 compiler, which reportedly prevents build quirks and crashes on this
2588 * Windows build was broken.
2590 * Rare crash when serialising to a file object with certain encodings.
2595 * Non-ASCII characters in attribute values are no longer escaped on
2598 * Passing non-ASCII byte strings or invalid unicode strings as .tag,
2599 namespaces, etc. will result in a ValueError instead of an
2600 AssertionError (just like the tag well-formedness check).
2602 * Up to several times faster attribute access (i.e. tree traversal) in
2615 * Incorrect evaluation of ``el.find("tag[child]")``.
2617 * Windows build was broken.
2619 * Moving a subtree from a document created in one thread into a
2620 document of another thread could crash when the rest of the source
2621 document is deleted while the subtree is still in use.
2623 * Rare crash when serialising to a file object with certain encodings.
2628 * lxml should now build without problems on MacOS-X.
2631 2.1beta2 (2008-05-02)
2632 =====================
2637 * All parse functions in lxml.html take a ``parser`` keyword argument.
2639 * lxml.html has a new parser class ``XHTMLParser`` and a module
2640 attribute ``xhtml_parser`` that provide XML parsers that are
2641 pre-configured for the lxml.html package.
2646 * Moving a subtree from a document created in one thread into a
2647 document of another thread could crash when the rest of the source
2648 document is deleted while the subtree is still in use.
2650 * Passing an nsmap when creating an Element will no longer strip
2651 redundantly defined namespace URIs. This prevented the definition
2652 of more than one prefix for a namespace on the same Element.
2657 * If the default namespace is redundantly defined with a prefix on the
2658 same Element, the prefix will now be preferred for subelements and
2659 attributes. This allows users to work around a problem in libxml2
2660 where attributes from the default namespace could serialise without
2661 a prefix even when they appear on an Element with a different
2662 namespace (i.e. they would end up in the wrong namespace).
2674 * Resolving to a filename in custom resolvers didn't work.
2676 * lxml did not honour libxslt's second error state "STOPPED", which
2677 let some XSLT errors pass silently.
2679 * Memory leak in Schematron with libxml2 >= 2.6.31.
2685 2.1beta1 (2008-04-15)
2686 =====================
2691 * Error logging in Schematron (requires libxml2 2.6.32 or later).
2693 * Parser option ``strip_cdata`` for normalising or keeping CDATA
2694 sections. Defaults to ``True`` as before, thus replacing CDATA
2695 sections by their text content.
2697 * ``CDATA()`` factory to wrap string content as CDATA section.
2702 * Resolving to a filename in custom resolvers didn't work.
2704 * lxml did not honour libxslt's second error state "STOPPED", which
2705 let some XSLT errors pass silently.
2707 * Memory leak in Schematron with libxml2 >= 2.6.31.
2709 * lxml.etree accepted non well-formed namespace prefix names.
2714 * Major cleanup in internal ``moveNodeToDocument()`` function, which
2715 takes care of namespace cleanup when moving elements between
2716 different namespace contexts.
2718 * New Elements created through the ``makeelement()`` method of an HTML
2719 parser or through lxml.html now end up in a new HTML document
2720 (doctype HTML 4.01 Transitional) instead of a generic XML document.
2721 This mostly impacts the serialisation and the availability of a DTD
2734 * Hanging thread in conjunction with GTK threading.
2736 * Crash bug in iterparse when moving elements into other documents.
2738 * HTML elements' ``.cssselect()`` method was broken.
2740 * ``ElementTree.find*()`` didn't accept QName objects.
2746 2.1alpha1 (2008-03-27)
2747 ======================
2752 * New event types 'comment' and 'pi' in ``iterparse()``.
2754 * ``XSLTAccessControl`` instances have a property ``options`` that
2755 returns a dict of access configuration options.
2757 * Constant instances ``DENY_ALL`` and ``DENY_WRITE`` on
2758 ``XSLTAccessControl`` class.
2760 * Extension elements for XSLT (experimental!)
2762 * ``Element.base`` property returns the xml:base or HTML base URL of
2765 * ``docinfo.URL`` property is writable.
2770 * Default encoding for plain text serialisation was different from
2771 that of XML serialisation (UTF-8 instead of ASCII).
2776 * Minor API speed-ups.
2778 * The benchmark suite now uses tail text in the trees, which makes the
2779 absolute numbers incomparable to previous results.
2781 * Generating the HTML documentation now requires Pygments_, which is
2782 used to enable syntax highlighting for the doctest examples.
2784 .. _Pygments: http://pygments.org/
2786 Most long-time deprecated functions and methods were removed:
2788 - ``etree.clearErrorLog()``, use ``etree.clear_error_log()``
2790 - ``etree.useGlobalPythonLog()``, use
2791 ``etree.use_global_python_log()``
2793 - ``etree.ElementClassLookup.setFallback()``, use
2794 ``etree.ElementClassLookup.set_fallback()``
2796 - ``etree.getDefaultParser()``, use ``etree.get_default_parser()``
2798 - ``etree.setDefaultParser()``, use ``etree.set_default_parser()``
2800 - ``etree.setElementClassLookup()``, use
2801 ``etree.set_element_class_lookup()``
2803 Note that ``parser.setElementClassLookup()`` has not been removed
2804 yet, although ``parser.set_element_class_lookup()`` should be used
2807 - ``xpath_evaluator.registerNamespace()``, use
2808 ``xpath_evaluator.register_namespace()``
2810 - ``xpath_evaluator.registerNamespaces()``, use
2811 ``xpath_evaluator.register_namespaces()``
2813 - ``objectify.setPytypeAttributeTag``, use
2814 ``objectify.set_pytype_attribute_tag``
2816 - ``objectify.setDefaultParser()``, use
2817 ``objectify.set_default_parser()``
2826 * soupparser.parse() allows passing keyword arguments on to
2829 * ``fromstring()`` method in ``lxml.html.soupparser``.
2834 * ``lxml.html.diff`` didn't treat empty tags properly (e.g.,
2837 * Handle entity replacements correctly in target parser.
2839 * Crash when using ``iterparse()`` with XML Schema validation.
2841 * The BeautifulSoup parser (soupparser.py) did not replace entities,
2842 which made them turn up in text content.
2844 * Attribute assignment of custom PyTypes in objectify could fail to
2845 correctly serialise the value to a string.
2850 * ``lxml.html.ElementSoup`` was replaced by a new module
2851 ``lxml.html.soupparser`` with a more consistent API. The old module
2852 remains for compatibility with ElementTree's own ElementSoup module.
2854 * Setting the XSLT_CONFIG and XML2_CONFIG environment variables at
2855 build time will let setup.py pick up the ``xml2-config`` and
2856 ``xslt-config`` scripts from the supplied path name.
2858 * Passing ``--with-xml2-config=/path/to/xml2-config`` to setup.py will
2859 override the ``xml2-config`` script that is used to determine the C
2860 compiler options. The same applies for the ``--with-xslt-config``
2870 * Support passing ``base_url`` to file parser functions to override
2871 the filename of the file(-like) object.
2876 * The prefix for objectify's pytype namespace was missing from the set
2877 of default prefixes.
2879 * Memory leak in Schematron (fixed only for libxml2 2.6.31+).
2881 * Error type names in RelaxNG were reported incorrectly.
2883 * Slice deletion bug fixed in objectify.
2888 * Enabled doctests for some Python modules (especially ``lxml.html``).
2890 * Add a ``method`` argument to ``lxml.html.tostring()``
2891 (``method="xml"`` for XHTML output).
2893 * Make it clearer that methods like ``lxml.html.fromstring()`` take a
2894 ``base_url`` argument.
2903 * Child iteration in ``lxml.pyclasslookup``.
2905 * Loads of new docstrings reflect the signature of functions and
2906 methods to make them visible in API docs and ``help()``
2911 * The module ``lxml.html.builder`` was duplicated as
2912 ``lxml.htmlbuilder``
2914 * Form elements would return None for ``form.fields.keys()`` if there
2915 was an unnamed input field. Now unnamed input fields are completely
2918 * Setting an element slice in objectify could insert slice-overlapping
2919 elements at the wrong position.
2924 * The generated API documentation was cleaned up and disburdened from
2925 non-public classes etc.
2927 * The previously public module ``lxml.html.setmixin`` was renamed to
2928 ``lxml.html._setmixin`` as it is not an official part of lxml. If
2929 you want to use it, feel free to copy it over to your own source
2932 * Passing ``--with-xslt-config=/path/to/xslt-config`` to setup.py will
2933 override the ``xslt-config`` script that is used to determine the C
2943 * Passing the ``unicode`` type as ``encoding`` to ``tostring()`` will
2944 serialise to unicode. The ``tounicode()`` function is now
2947 * ``XMLSchema()`` and ``RelaxNG()`` can parse from StringIO.
2949 * ``makeparser()`` function in ``lxml.objectify`` to create a new
2950 parser with the usual objectify setup.
2952 * Plain ASCII XPath string results are no longer forced into unicode
2953 objects as in 2.0beta1, but are returned as plain strings as before.
2955 * All XPath string results are 'smart' objects that have a
2956 ``getparent()`` method to retrieve their parent Element.
2958 * ``with_tail`` option in serialiser functions.
2960 * More accurate exception messages in validator creation.
2962 * Parse-time XML schema validation (``schema`` parser keyword).
2964 * XPath string results of the ``text()`` function and attribute
2965 selection make their Element container accessible through a
2966 ``getparent()`` method. As a side-effect, they are now always
2967 unicode objects (even ASCII strings).
2969 * ``XSLT`` objects are usable in any thread - at the cost of a deep
2970 copy if they were not created in that thread.
2972 * Invalid entity names and character references will be rejected by
2973 the ``Entity()`` factory.
2975 * ``entity.text`` returns the textual representation of the entity,
2978 * New properties ``position`` and ``code`` on ParseError exception (as
2981 * Rich comparison of ``element.attrib`` proxies.
2983 * ElementTree compatible TreeBuilder class.
2985 * Use default prefixes for some common XML namespaces.
2987 * ``lxml.html.clean.Cleaner`` now allows for a ``host_whitelist``, and
2988 two overridable methods: ``allow_embedded_url(el, url)`` and the
2989 more general ``allow_element(el)``.
2991 * Extended slicing of Elements as in ``element[1:-1:2]``, both in
2992 etree and in objectify
2994 * Resolvers can now provide a ``base_url`` keyword argument when
2995 resolving a document as string data.
2997 * When using ``lxml.doctestcompare`` you can give the doctest option
2998 ``NOPARSE_MARKUP`` (like ``# doctest: +NOPARSE_MARKUP``) to suppress
2999 the special checking for one test.
3001 * Separate ``feed_error_log`` property for the feed parser interface.
3002 The normal parser interface and ``iterparse`` continue to use
3005 * The normal parsers and the feed parser interface are now separated
3006 and can be used concurrently on the same parser instance.
3008 * ``fromstringlist()`` and ``tostringlist()`` functions as in
3011 * ``iterparse()`` accepts an ``html`` boolean keyword argument for
3012 parsing with the HTML parser (note that this interface may be
3015 * Parsers accept an ``encoding`` keyword argument that overrides the encoding
3016 of the parsed documents.
3018 * New C-API function ``hasChild()`` to test for children
3020 * ``annotate()`` function in objectify can annotate with Python types and XSI
3021 types in one step. Accompanied by ``xsiannotate()`` and ``pyannotate()``.
3023 * ``ET.write()``, ``tostring()`` and ``tounicode()`` now accept a keyword
3024 argument ``method`` that can be one of 'xml' (or None), 'html' or 'text' to
3025 serialise as XML, HTML or plain text content.
3027 * ``iterfind()`` method on Elements returns an iterator equivalent to
3030 * ``itertext()`` method on Elements
3032 * Setting a QName object as value of the .text property or as an attribute
3033 will resolve its prefix in the respective context
3035 * ElementTree-like parser target interface as described in
3036 http://effbot.org/elementtree/elementtree-xmlparser.htm
3038 * ElementTree-like feed parser interface on XMLParser and HTMLParser
3039 (``feed()`` and ``close()`` methods)
3041 * Reimplemented ``objectify.E`` for better performance and improved
3042 integration with objectify. Provides extended type support based on
3045 * XSLT objects now support deep copying
3047 * New ``makeSubElement()`` C-API function that allows creating a new
3048 subelement straight with text, tail and attributes.
3050 * XPath extension functions can now access the current context node
3051 (``context.context_node``) and use a context dictionary
3052 (``context.eval_context``) from the context provided in their first
3055 * HTML tag soup parser based on BeautifulSoup in ``lxml.html.ElementSoup``
3057 * New module ``lxml.doctestcompare`` by Ian Bicking for writing simplified
3058 doctests based on XML/HTML output. Use by importing ``lxml.usedoctest`` or
3059 ``lxml.html.usedoctest`` from within a doctest.
3061 * New module ``lxml.cssselect`` by Ian Bicking for selecting Elements with CSS
3064 * New package ``lxml.html`` written by Ian Bicking for advanced HTML
3067 * Namespace class setup is now local to the ``ElementNamespaceClassLookup``
3068 instance and no longer global.
3070 * Schematron validation (incomplete in libxml2)
3072 * Additional ``stringify`` argument to ``objectify.PyType()`` takes a
3073 conversion function to strings to support setting text values from arbitrary
3076 * Entity support through an ``Entity`` factory and element classes. XML
3077 parsers now have a ``resolve_entities`` keyword argument that can be set to
3078 False to keep entities in the document.
3080 * ``column`` field on error log entries to accompany the ``line`` field
3082 * Error specific messages in XPath parsing and evaluation
3083 NOTE: for evaluation errors, you will now get an XPathEvalError instead of
3084 an XPathSyntaxError. To catch both, you can except on ``XPathError``
3086 * The regular expression functions in XPath now support passing a node-set
3089 * Extended type annotation in objectify: new ``xsiannotate()`` function
3091 * EXSLT RegExp support in standard XPath (not only XSLT)
3096 * Missing import in ``lxml.html.clean``.
3098 * Some Python 2.4-isms prevented lxml from building/running under
3101 * XPath on ElementTrees could crash when selecting the virtual root
3102 node of the ElementTree.
3104 * Compilation ``--without-threading`` was buggy in alpha5/6.
3106 * Memory leak in the ``parse()`` function.
3108 * Minor bugs in XSLT error message formatting.
3110 * Result document memory leak in target parser.
3112 * Target parser failed to report comments.
3114 * In the ``lxml.html`` ``iter_links`` method, links in ``<object>``
3115 tags weren't recognized. (Note: plugin-specific link parameters
3116 still aren't recognized.) Also, the ``<embed>`` tag, though not
3117 standard, is now included in ``lxml.html.defs.special_inline_tags``.
3119 * Using custom resolvers on XSLT stylesheets parsed from a string
3120 could request ill-formed URLs.
3122 * With ``lxml.doctestcompare`` if you do ``<tag xmlns="...">`` in your
3123 output, it will then be namespace-neutral (before the ellipsis was
3124 treated as a real namespace).
3126 * AttributeError in feed parser on parse errors
3128 * XML feed parser setup problem
3130 * Type annotation for unicode strings in ``DataElement()``
3132 * lxml failed to serialise namespace declarations of elements other than the
3135 * Race condition in XSLT where the resolver context leaked between concurrent
3138 * lxml.etree did not check tag/attribute names
3140 * The XML parser did not report undefined entities as error
3142 * The text in exceptions raised by XML parsers, validators and XPath
3143 evaluators now reports the first error that occurred instead of the last
3145 * Passing '' as XPath namespace prefix did not raise an error
3147 * Thread safety in XPath evaluators
3152 * Exceptions carry only the part of the error log that is related to
3153 the operation that caused the error.
3155 * ``XMLSchema()`` and ``RelaxNG()`` now enforce passing the source
3156 file/filename through the ``file`` keyword argument.
3158 * The test suite now skips most doctests under Python 2.3.
3160 * ``make clean`` no longer removes the .c files (use ``make
3161 realclean`` instead)
3163 * Minor performance tweaks for Element instantiation and subelement
3166 * Various places in the XPath, XSLT and iteration APIs now require
3167 keyword-only arguments.
3169 * The argument order in ``element.itersiblings()`` was changed to
3170 match the order used in all other iteration methods. The second
3171 argument ('preceding') is now a keyword-only argument.
3173 * The ``getiterator()`` method on Elements and ElementTrees was
3174 reverted to return an iterator as it did in lxml 1.x. The ET API
3175 specification allows it to return either a sequence or an iterator,
3176 and it traditionally returned a sequence in ET and an iterator in
3177 lxml. However, it is now deprecated in favour of the ``iter()``
3178 method, which should be used in new code wherever possible.
3180 * The 'pretty printed' serialisation of ElementTree objects now
3181 inserts newlines at the root level between processing instructions,
3182 comments and the root tag.
3184 * A 'pretty printed' serialisation is now terminated with a newline.
3186 * Second argument to ``lxml.etree.Extension()`` helper is no longer
3187 required, third argument is now a keyword-only argument ``ns``.
3189 * ``lxml.html.tostring`` takes an ``encoding`` argument.
3191 * The module source files were renamed to "lxml.*.pyx", such as
3192 "lxml.etree.pyx". This was changed for consistency with the way
3193 Pyrex commonly handles package imports. The main effect is that
3194 classes now know about their fully qualified class name, including
3195 the package name of their module.
3197 * Keyword-only arguments in some API functions, especially in the
3198 parsers and serialisers.
3200 * Tag name validation in lxml.etree (and lxml.html) now distinguishes
3201 between HTML tags and XML tags based on the parser that was used to
3202 parse or create them. HTML tags no longer reject any non-ASCII
3203 characters in tag names but only spaces and the special characters
3206 * lxml.etree now emits a warning if you use XPath with libxml2 2.6.27
3207 (which can crash on certain XPath errors)
3209 * Type annotation in objectify now preserves the already annotated type by
3210 default to prevent losing type information that is already there.
3212 * ``element.getiterator()`` returns a list, use ``element.iter()`` to retrieve
3213 an iterator (ElementTree 1.3 compatible behaviour)
3215 * objectify.PyType for None is now called "NoneType"
3217 * ``el.getiterator()`` renamed to ``el.iter()``, following ElementTree 1.3 -
3218 original name is still available as alias
3220 * In the public C-API, ``findOrBuildNodeNs()`` was replaced by the more
3221 generic ``findOrBuildNodeNsPrefix``
3223 * Major refactoring in XPath/XSLT extension function code
3225 * Network access in parsers disabled by default
3234 * Backported decref crash fix from 2.0
3236 * Well hidden free-while-in-use crash bug in ObjectPath
3241 * The test suites now run ``gc.collect()`` in the ``tearDown()``
3242 methods. While this makes them take a lot longer to run, it also
3243 makes it easier to link a specific test to garbage collection
3244 problems that would otherwise appear in later tests.
3256 * lxml.etree could crash when adding more than 10000 namespaces to a
3259 * lxml failed to serialise namespace declarations of elements other
3260 than the root node of a tree
3269 * The ``ElementMaker`` in ``lxml.builder`` now accepts the keyword arguments
3270 ``namespace`` and ``nsmap`` to set a namespace and nsmap for the Elements it
3273 * The ``docinfo`` on ElementTree objects has new properties ``internalDTD``
3274 and ``externalDTD`` that return a DTD object for the internal or external
3275 subset of the document respectively.
3277 * Serialising an ElementTree now includes any internal DTD subsets that are
3278 part of the document, as well as comments and PIs that are siblings of the
3284 * Parsing with the ``no_network`` option could fail
3289 * lxml now raises a TagNameWarning about tag names containing ':' instead of
3290 an Error as 1.3.3 did. The reason is that a number of projects currently
3291 misuse the previous lack of tag name validation to generate namespace
3292 prefixes without declaring namespaces. Apart from the danger of generating
3293 broken XML this way, it also breaks most of the namespace-aware tools in
3294 XML, including XPath, XSLT and validation. lxml 1.3.x will continue to
3295 support this bug with a Warning, while lxml 2.0 will be strict about
3296 well-formed tag names (not only regarding ':').
3298 * Serialising an Element no longer includes its comment and PI siblings (only
3299 ElementTree serialisation includes them).
3308 * ElementTree compatible parser ``ETCompatXMLParser`` strips processing
3309 instructions and comments while parsing XML
3311 * Parsers now support stripping PIs (keyword argument 'remove_pis')
3313 * ``etree.fromstring()`` now supports parsing both HTML and XML, depending on
3314 the parser you pass.
3316 * Support ``base_url`` keyword argument in ``HTML()`` and ``XML()``
3321 * Parsing from Python Unicode strings failed on some platforms
3323 * ``Element()`` did not raise an exception on tag names containing ':'
3325 * ``Element.getiterator(tag)`` did not accept ``Comment`` and
3326 ``ProcessingInstruction`` as tags. It also accepts ``Element`` now.
3338 * "deallocating None" crash bug
3347 * objectify.DataElement now supports setting values from existing data
3348 elements (not just plain Python types) and reuses defined namespaces etc.
3350 * E-factory support for lxml.objectify (``objectify.E``)
3355 * Better way to prevent crashes in Element proxy cleanup code
3357 * objectify.DataElement didn't set up None value correctly
3359 * objectify.DataElement didn't check the value against the provided type hints
3361 * Reference-counting bug in ``Element.attrib.pop()``
3370 * Module ``lxml.pyclasslookup`` module implements an Element class lookup
3371 scheme that can access the entire tree in read-only mode to help determining
3372 a suitable Element class
3374 * Parsers take a ``remove_comments`` keyword argument that skips over comments
3376 * ``parse()`` function in ``objectify``, corresponding to ``XML()`` etc.
3378 * ``Element.addnext(el)`` and ``Element.addprevious(el)`` methods to support
3379 adding processing instructions and comments around the root node
3381 * ``Element.attrib`` was missing ``clear()`` and ``pop()`` methods
3383 * Extended type annotation in objectify: cleaner annotation namespace setup
3384 plus new ``deannotate()`` function
3386 * Support for custom Element class instantiation in lxml.sax: passing a
3387 ``makeelement`` function to the ElementTreeContentHandler will reuse the
3388 lookup context of that function
3390 * '.' represents empty ObjectPath (identity)
3392 * ``Element.values()`` to accompany the existing ``.keys()`` and ``.items()``
3394 * ``collectAttributes()`` C-function to build a list of attribute
3395 keys/values/items for a libxml2 node
3397 * ``DTD`` validator class (like ``RelaxNG`` and ``XMLSchema``)
3399 * HTML generator helpers by Fredrik Lundh in ``lxml.htmlbuilder``
3401 * ``ElementMaker`` XML generator by Fredrik Lundh in ``lxml.builder.E``
3403 * Support for pickling ``objectify.ObjectifiedElement`` objects to XML
3405 * ``update()`` method on Element.attrib
3407 * Optimised replacement for libxml2's _xmlReconsiliateNs(). This allows lxml
3408 a better handling of namespaces when moving elements between documents.
3413 * Removing Elements from a tree could make them lose their namespace
3416 * ``ElementInclude`` didn't honour base URL of original document
3418 * Replacing the children slice of an Element would cut off the tails of the
3421 * ``Element.getiterator(tag)`` did not accept ``Comment`` and
3422 ``ProcessingInstruction`` as tags
3424 * API functions now check incoming strings for XML conformity. Zero bytes or
3425 low ASCII characters are no longer accepted (AssertionError).
3427 * XSLT parsing failed to pass resolver context on to imported documents
3429 * passing '' as namespace prefix in nsmap could be passed through to libxml2
3431 * Objectify couldn't handle prefixed XSD type names in ``xsi:type``
3433 * More ET compatible behaviour when writing out XML declarations or not
3435 * More robust error handling in ``iterparse()``
3437 * Documents lost their top-level PIs and comments on serialisation
3439 * lxml.sax failed on comments and PIs. Comments are now properly ignored and
3442 * Possible memory leaks in namespace handling when moving elements between
3448 * major restructuring in the documentation
3457 * Build fixes for MS compiler
3459 * Item assignments to special names like ``element["text"]`` failed
3461 * Renamed ObjectifiedDataElement.__setText() to _setText() to make it easier
3464 * The pattern for attribute names in ObjectPath was too restrictive
3473 * Rich comparison of QName objects
3475 * Support for regular expressions in benchmark selection
3477 * get/set emulation (not .attrib!) for attributes on processing instructions
3479 * ElementInclude Python module for ElementTree compatible XInclude processing
3480 that honours custom resolvers registered with the source document
3482 * ElementTree.parser property holds the parser used to parse the document
3484 * setup.py has been refactored for greater readability and flexibility
3486 * --rpath flag to setup.py to induce automatic linking-in of dynamic library
3487 runtime search paths has been renamed to --auto-rpath. This makes it
3488 possible to pass an --rpath directly to distutils; previously this was being
3494 * Element instantiation now uses locks to prevent race conditions with threads
3496 * ElementTree.write() did not raise an exception when the file was not writable
3498 * Error handling could crash under Python <= 2.4.1 - fixed by disabling thread
3499 support in these environments
3501 * Element.find*() did not accept QName objects as path
3506 * code cleanup: redundant _NodeBase super class merged into _Element class
3507 Note: although the impact should be zero in most cases, this change breaks
3508 the compatibility of the public C-API
3517 * Data elements in objectify support repr(), which is now used by dump()
3519 * Source distribution now ships with a patched Pyrex
3521 * New C-API function makeElement() to create new elements with text,
3522 tail, attributes and namespaces
3524 * Reuse original parser flags for XInclude
3526 * Simplified support for handling XSLT processing instructions
3531 * Parser resources were not freed before the next parser run
3533 * Open files and XML strings returned by Python resolvers were not
3536 * Crash in the IDDict returned by XMLDTDID
3538 * Copying Comments and ProcessingInstructions failed
3540 * Memory leak for external URLs in _XSLTProcessingInstruction.parseXSL()
3542 * Memory leak when garbage collecting tailed root elements
3544 * HTML script/style content was not propagated to .text
3546 * Show text xincluded between text nodes correctly in .text and .tail
3548 * 'integer * objectify.StringElement' operation was not supported
3557 * XSLT profiling support (``profile_run`` keyword)
3559 * countchildren() method on objectify.ObjectifiedElement
3561 * Support custom elements for tree nodes in lxml.objectify
3566 * lxml.objectify failed to support long data values (e.g., "123L")
3568 * Error messages from XSLT did not reach ``XSLT.error_log``
3570 * Factories objectify.Element() and objectify.DataElement() were missing
3571 ``attrib`` and ``nsmap`` keyword arguments
3573 * Changing the default parser in lxml.objectify did not update the factories
3574 Element() and DataElement()
3576 * Let lxml.objectify.Element() always generate tree elements (not data
3579 * Build under Windows failed ('\0' bug in patched Pyrex version)
3588 * Comments and processing instructions return '<!-- comment -->' and
3589 '<?pi-target content?>' for repr()
3591 * Parsers are now the preferred (and default) place where element class lookup
3592 schemes should be registered. Namespace lookup is no longer supported by
3595 * Support for Python 2.5 beta
3597 * Unlock the GIL for deep copying documents and for XPath()
3599 * New ``compact`` keyword argument for parsing read-only documents
3601 * Support for parser options in iterparse()
3603 * The ``namespace`` axis is supported in XPath and returns (prefix, URI)
3606 * The XPath expression "/" now returns an empty list instead of raising an
3609 * XML-Object API on top of lxml (lxml.objectify)
3611 * Customizable Element class lookup:
3613 * different pre-implemented lookup mechanisms
3615 * support for externally provided lookup functions
3617 * Support for processing instructions (ET-like, not compatible)
3619 * Public C-level API for independent extension modules
3621 * Module level ``iterwalk()`` function as 'iterparse' for trees
3623 * Module level ``iterparse()`` function similar to ElementTree (see
3624 documentation for differences)
3626 * Element.nsmap property returns a mapping of all namespace prefixes known at
3627 the Element to their namespace URI
3629 * Reentrant threading support in RelaxNG, XMLSchema and XSLT
3631 * Threading support in parsers and serializers:
3633 * All in-memory operations (tostring, parse(StringIO), etc.) free the GIL
3635 * File operations (on file names) free the GIL
3637 * Reading from file-like objects frees the GIL and reacquires it for reading
3639 * Serialisation to file-like objects is single-threaded (high lock overhead)
3641 * Element iteration over XPath axes:
3643 * Element.iterdescendants() iterates over the descendants of an element
3645 * Element.iterancestors() iterates over the ancestors of an element (from
3648 * Element.itersiblings() iterates over either the following or preceding
3649 siblings of an element
3651 * Element.iterchildren() iterates over the children of an element in either
3654 * All iterators support the ``tag`` keyword argument to restrict the
3657 * Element.getnext() and Element.getprevious() return the direct siblings of an
3663 * filenames with local 8-bit encoding were not supported
3665 * 1.1beta did not compile under Python 2.3
3667 * ignore unknown 'pyval' attribute values in objectify
3669 * objectify.ObjectifiedElement.addattr() failed to accept Elements and Lists
3671 * objectify.ObjectPath.setattr() failed to accept Elements and Lists
3673 * XPathSyntaxError now inherits from XPathError
3675 * Threading race conditions in RelaxNG and XMLSchema
3677 * Crash when mixing elements from XSLT results into other trees, concurrent
3678 XSLT is only allowed when the stylesheet was parsed in the main thread
3680 * The EXSLT ``regexp:match`` function now works as defined (except for some
3681 differences in the regular expression syntax)
3683 * Setting element.text to '' returned None on request, not the empty string
3685 * ``iterparse()`` could crash on long XML files
3687 * Creating documents no longer copies the parser for later URL resolving. For
3688 performance reasons, only a reference is kept. Resolver updates on the
3689 parser will now be reflected by documents that were parsed before the
3690 change. Although this should rarely become visible, it is a behavioral
3700 * List-like ``Element.extend()`` method
3705 * Crash in tail handling in ``Element.replace()``
3714 * Element.replace(old, new) method to replace a subelement by another one
3719 * Crash when mixing elements from XSLT results into other trees
3721 * Copying/deepcopying did not work for ElementTree objects
3723 * Setting an attribute to a non-string value did not raise an exception
3725 * Element.remove() deleted the tail text from the removed Element
3734 * Support for setting a custom default Element class as opposed to namespace
3735 specific classes (which still override the default class)
3740 * Rare exceptions in Python list functions were not handled
3742 * Parsing accepted unicode strings with XML encoding declaration in certain
3745 * Parsing 8-bit encoded strings from StringIO objects raised an exception
3747 * Module function ``initThread()`` was removed - useless (and never worked)
3749 * XSLT and parser exception messages include the error line number
3758 * Repeated calls to Element.attrib now efficiently return the same instance
3763 * Document deallocation could crash in certain garbage collection scenarios
3765 * Extension function calls in XSLT variable declarations could break the
3766 stylesheet and crash on repeated calls
3768 * Deep copying Elements could lose namespaces declared in parents
3770 * Deep copying Elements did not copy tail
3772 * Parsing file(-like) objects failed to load external entities
3774 * Parsing 8-bit strings from file(-like) objects raised an exception
3776 * xsl:include failed when the stylesheet was parsed from a file-like object
3778 * lxml.sax.ElementTreeProducer did not call startDocument() / endDocument()
3780 * MSVC compiler complained about long strings (supports only 2048 bytes)
3789 * Element.getiterator() and the findall() methods support finding arbitrary
3790 elements from a namespace (pattern ``{namespace}*``)
3792 * Another speedup in tree iteration code
3794 * General speedup of Python Element object creation and deallocation
3796 * Writing C14N no longer serializes in memory (reduced memory footprint)
3798 * PyErrorLog for error logging through the Python ``logging`` module
3800 * ``Element.getroottree()`` returns an ElementTree for the root node of the
3801 document that contains the element.
3803 * ElementTree.getpath(element) returns a simple, absolute XPath expression to
3804 find the element in the tree structure
3806 * Error logs have a ``last_error`` attribute for convenience
3808 * Comment texts can be changed through the API
3810 * Formatted output via ``pretty_print`` keyword in serialization functions
3812 * XSLT can block access to file system and network via ``XSLTAccessControl``
3814 * ElementTree.write() no longer serializes in memory (reduced memory
3817 * Speedup of Element.findall(tag) and Element.getiterator(tag)
3819 * Support for writing the XML representation of Elements and ElementTrees to
3820 Python unicode strings via ``etree.tounicode()``
3822 * Support for writing XSLT results to Python unicode strings via ``unicode()``
3824 * Parsing a unicode string no longer copies the string (reduced memory
3827 * Parsing file-like objects reads chunks rather than the whole file (reduced
3830 * Parsing StringIO objects from the start avoids copying the string (reduced
3833 * Read-only 'docinfo' attribute in ElementTree class holds DOCTYPE
3834 information, original encoding and XML version as seen by the parser
3836 * etree module can be compiled without libxslt by commenting out the line
3837 ``include "xslt.pxi"`` near the end of the etree.pyx source file
3839 * Better error messages in parser exceptions
3841 * Error reporting also works in XSLT
3843 * Support for custom document loaders (URI resolvers) in parsers and XSLT,
3844 resolvers are registered at parser level
3846 * Implementation of exslt:regexp for XSLT based on the Python 're' module,
3847 enabled by default, can be switched off with 'regexp=False' keyword argument
3849 * Support for exslt extensions (libexslt) and libxslt extra functions
3850 (node-set, document, write, output)
3852 * Substantial speedup in XPath.evaluate()
3854 * HTMLParser for parsing (broken) HTML
3856 * XMLDTDID function parses XML into tuple (root node, ID dict) based on xml:id
3857 implementation of libxml2 (as opposed to ET compatible XMLID)
3862 * Memory leak in Element.__setitem__
3864 * Memory leak in Element.attrib.items() and Element.attrib.values()
3866 * Memory leak in XPath extension functions
3868 * Memory leak in unicode related setup code
3870 * Element now raises ValueError on empty tag names
3872 * Namespace fixing after moving elements between documents could fail if the
3873 source document was freed too early
3875 * Setting namespace-less tag names on namespaced elements ('{ns}t' -> 't')
3876 didn't reset the namespace
3878 * Unknown constants from newer libxml2 versions could raise exceptions in the
3881 * lxml.etree compiles much faster
3883 * On libxml2 <= 2.6.22, parsing strings with encoding declaration could fail
3886 * Document reference in ElementTree objects was not updated when the root
3887 element was moved to a different document
3889 * Running absolute XPath expressions on an Element now evaluates against the
3892 * Evaluating absolute XPath expressions (``/*``) on an ElementTree could fail
3894 * Crashes when calling XSLT, RelaxNG, etc. with uninitialized ElementTree
3897 * Removed public function ``initThreadLogging()``, replaced by more general
3898 ``initThread()`` which fixes a number of setup problems in threads
3900 * Memory leak when using iconv encoders in tostring/write
3902 * Deep copying Elements and ElementTrees maintains the document information
3904 * Serialization functions raise LookupError for unknown encodings
3906 * Memory deallocation crash resulting from deep copying elements
3908 * Some ElementTree methods could crash if the root node was not initialized
3909 (neither file nor element passed to the constructor)
3911 * Element/SubElement failed to set attribute namespaces from passed ``attrib``
3914 * ``tostring()`` adds an XML declaration for non-ASCII encodings
3916 * ``tostring()`` failed to serialize encodings that contain 0-bytes
3918 * ElementTree.xpath() and XPathDocumentEvaluator were not using the
3919 ElementTree root node as reference point
3921 * Calling ``document('')`` in XSLT failed to return the stylesheet
3930 * Speedup for Element.makeelement(): the new element reuses the original
3931 libxml2 document instead of creating a new empty one
3933 * Speedup for reversed() iteration over element children (Py2.4+ only)
3935 * ElementTree compatible QName class
3937 * RelaxNG and XMLSchema accept any Element, not only ElementTrees
3942 * str(xslt_result) was broken for XSLT output other than UTF-8
3944 * Memory leak if write_c14n fails to write the file after conversion
3946 * Crash in XMLSchema and RelaxNG when passing non-schema documents
3948 * Memory leak in RelaxNG() when RelaxNGParseError is raised
3956 * lxml.sax.ElementTreeContentHandler checks closing elements and raises
3957 SaxError on mismatch
3959 * lxml.sax.ElementTreeContentHandler supports namespace-less SAX events
3960 (startElement, endElement) and defaults to empty attributes (keyword
3963 * Speedup for repeatedly accessing element tag names
3965 * Minor API performance improvements
3970 * Memory deallocation bug when using XSLT output method "html"
3972 * sax.py was handling UTF-8 encoded tag names where it shouldn't
3974 * lxml.tests package will no longer be installed (is still in source tar)
3982 * Error logging API for libxml2 error messages
3984 * Various performance improvements
3986 * Benchmark script for lxml, ElementTree and cElementTree
3988 * Support for registering extension functions through new FunctionNamespace
3989 class (see doc/extensions.txt)
3991 * ETXPath class for XPath expressions in ElementTree notation ('//{ns}tag')
3993 * Support for variables in XPath expressions (also in XPath class)
3995 * XPath class for compiled XPath expressions
3997 * XMLID module level function (ElementTree compatible)
3999 * XMLParser API for customized libxml2 parser configuration
4001 * Support for custom Element classes through new Namespace API (see
4002 doc/namespace_extensions.txt)
4004 * Common exception base class LxmlError for module exceptions
4006 * real iterator support in iter(Element), Element.getiterator()
4008 * XSLT objects are callable, result trees support str()
4010 * Added MANIFEST.in for easier creation of RPM files.
4012 * 'getparent' method on elements allows navigation to an element's
4015 * Python core compatible SAX tree builder and SAX event generator. See
4016 doc/sax.txt for more information.
4021 * Segfaults and memory leaks in various API functions of Element
4023 * Segfault in XSLT.tostring()
4025 * ElementTree objects no longer interfere, Elements can be root of different
4026 ElementTrees at the same time
4028 * document('') works in XSLT documents read from files (in-memory documents
4029 cannot support this due to libxslt deficiencies)
4037 * Support for copy.deepcopy() on elements. copy.copy() works also, but
4038 does the same thing, and does *not* create a shallow copy, as that
4039 makes no sense in the context of libxml2 trees. This means a
4040 potential incompatibility with ElementTree, but there's more chance
4041 that it works than if copy.copy() isn't supported at all.
4043 * Increased compatibility with (c)ElementTree; .parse() on ElementTree is
4044 supported and parsing of gzipped XML files works.
4046 * implemented index() on elements, allowing one to find the index of a
4052 * Use xslt-config instead of xml2-config to find out libxml2
4053 directories to take into account a case where libxslt is installed
4054 in a different directory than libxslt.
4056 * Eliminate crash condition in iteration when text nodes are changed.
4058 * Passing 'None' to tostring() does not result in a segfault anymore,
4059 but an AssertionError.
4061 * Some test fixes for Windows.
4063 * Raise XMLSyntaxError and XPathSyntaxError instead of plain python
4064 syntax errors. This should be less confusing.
4066 * Fixed error with uncaught exception in Pyrex code.
4068 * Calling lxml.etree.fromstring('') throws XMLSyntaxError instead of a
4071 * has_key() works on attrib. 'in' tests also work correctly on attrib.
4073 * INSTALL.txt was saying 2.2.16 instead of 2.6.16 as a supported
4074 libxml2 version, as it should.
4076 * Passing a UTF-8 encoded string to the XML() function would fail;
4085 * parameters (XPath expressions) can be passed to XSLT using keyword
4088 * Simple XInclude support. Calling the xinclude() method on a tree
4089 will process any XInclude statements in the document.
4091 * XMLSchema support. Use the XMLSchema class or the convenience
4092 xmlschema() method on a tree to do XML Schema (XSD) validation.
4094 * Added convenience xslt() method on tree. This is less efficient
4095 than the XSLT object, but makes it easier to write quick code.
4097 * Added convenience relaxng() method on tree. This is less efficient
4098 than the RelaxNG object, but makes it easier to write quick code.
4100 * Make it possible to use XPathEvaluator with elements as well. The
4101 XPathEvaluator in this case will retain the element so multiple
4102 XPath queries can be made against one element efficiently. This
4103 replaces the second argument to the .evaluate() method that existed
4106 * Allow registerNamespace() to be called on an XPathEvaluator, after
4107 creation, to add additional namespaces. Also allow registerNamespaces(),
4108 which does the same for a namespace dictionary.
4110 * Add 'prefix' attribute to element to be able to read prefix information.
4111 This is entirely read-only.
4113 * It is possible to supply an extra nsmap keyword parameter to
4114 the Element() and SubElement() constructors, which supplies a
4115 prefix to namespace URI mapping. This will create namespace
4116 prefix declarations on these elements and these prefixes will show up
4117 in XML serialization.
4122 * Killed yet another memory management related bug: trees created
4123 using newDoc would not get a libxml2-level dictionary, which caused
4124 problems when deallocating these documents later if they contained a
4125 node that came from a document with a dictionary.
4127 * Moving namespaced elements between documents was problematic as
4128 references to the original document would remain. This has been fixed
4129 by applying xmlReconciliateNs() after each move operation.
4131 * Can pass None to 'dump()' without segfaults.
4133 * tostring() works properly for non-root elements as well.
4135 * Cleaned out the tostring() method so it should handle encoding
4138 * Cleaned out the ElementTree.write() method so it should handle encoding
4139 correctly. Writing directly to a file should also be faster, as there is no
4140 need to go through a Python string in that case. Made sure the test cases
4141 test both serializing to StringIO as well as serializing to a real file.
4149 * Changed setup.py so that library_dirs is also guessed. This should
4150 help with compilation on the Mac OS X platform, where otherwise the
4151 wrong library (shipping with the OS) could be picked up.
4153 * Tweaked setup.py so that it picks up the version from version.txt.
4158 * Do the right thing when handling namespaced attributes.
4160 * fix bug where tostring() moved nodes into new documents. tostring()
4161 had very nasty side-effects before this fix, sorry!
4166 * Python 2.2 compatibility fixes.
4168 * unicode fixes in Element() and Comment() as well as XML(); unicode
4169 input wasn't properly being UTF-8 encoded.
4174 Initial public release.
projects / platform / upstream / python-lxml.git / blob