Scheduled biweekly dependency update for week 48

[pyup-bot]

Update argcomplete from 1.10.3 to 3.5.1.

Changelog

3.5.1

===============================

-  Restore compatibility with argparse in Python 3.12.7+ (508)

3.5.0

===============================

-  Use project.scripts instead of setuptools scripts (498)

-  Test infrastructure improvements

3.4.0

===============================

-  No stdin for python calls from bash completion functions (488)

Prevents usage of stdin by (python) executables that are called
during completion generation. This prevents the completion locking up
the entire shell when the python script is broken i.e. it enters an
interactive mode (REPL) instead of generating the completions, as
expected.

-  Localize shell variable REPLY to avoid overwriting users’ value
(489)

The variable REPLY is used by default by the ``read`` shell builtin
to store the return value, and like all bash/zsh variables, is scoped
globally. This change allows this variable to be used for other needs
by appropriately scoping its internal use by an argcomplete utility
function that uses ``read``.

3.3.0

===============================

-  Preserve compatibility with argparse option tuples of length 4. This
update is required to use argcomplete on Python 3.11.9+ or 3.12.3+.

3.2.3

===============================

-  Allow register-python-argcomplete output to be used as lazy-loaded
zsh completion module (475)

-  Move debug_stream initialization to helper method to allow fd 9
behavior to be overridden in subclasses (471)

3.2.2

===============================

Expand tilde in zsh

3.2.1

===============================

-  Allow explicit zsh global completion activation (467)

3.2.0

===============================

-  Fix and test global completion in zsh (463, 466)

-  Add –yes option to activate-global-python-argcomplete (461)

-  Test suite improvements

3.1.6

===============================

-  Respect user choice in activate-global-python-argcomplete

3.1.5

===============================

-  Escape colon in zsh completions. Fixes 456

3.1.4

===============================

-  Call \_default as a fallback in zsh global completion

3.1.3

===============================

-  Use homebrew prefix by default

-  zsh: Allow to use external script (453)

-  Add support for Python 3.12 and drop EOL 3.6 and 3.7 (449)

3.1.2

===============================

-  Ensure Python 3.12+ compatibility in check_console_script (448)

3.1.1

===============================

-  Search through asdf shims

-  Use \` as escape character in PowerShell (434)

3.1.0

===============================

-  setup.py -> pyproject.toml migration start (427)

-  Improve user install logic in activate-global-python-argcomplete
(437)

-  Ensure Python 3.7 compatibility in check_console_script (436)

-  ZSH implementation fixes (431, 433)

-  Documentation improvements

3.0.8

===============================

-  Test suite shell wrapper: Accept OSError on exit

3.0.7

===============================

-  Test suite: Use general regex to cut zsh reset ANSI sequences (425)

3.0.6

===============================

-  Allow importlib-metadata 6.x; skip test failures on Python 3.7 (420,
424)

-  Note completers can return iterables of strings, not just lists
(422)

-  Documentation and test improvements

3.0.5

===============================

-  Call \_default as fallback in zsh global completion hook

-  Begin support for mapping-emitting completers

3.0.4

===============================

-  activate-global-python-argcomplete: do not overwrite existing dotfile
in user directory

-  Add NOTICE file

-  Establish long term name for split_line as
argcomplete.lexers.split_line

3.0.3

===============================

-  Re-add split_line to API (419)

3.0.2

===============================

Fix zsh default completion issues

3.0.1

===============================

-  Fix zsh autoload issues

3.0.0

===============================

-  Fully support zsh. Argcomplete now supports completion descriptions
and global completion in zsh.

-  Clean up top level namespace.

-  Documentation and test improvements.

2.1.2

===============================

-  Test infrastructure improvements

-  Indicate that there is no support commitment for fish and tcsh shells

2.1.1

===============================

-  Documentation and test improvements

2.1.0

===============================

-  Remove scripts for contrib-supported shells from global namespace

2.0.6

===============================

-  setup.py: exclude test.\* subpackages from find_packages (406)

-  Support PowerShell (405)

-  CI updates

2.0.5

===============================

-  Revert “Support powershell (392)”

2.0.4

===============================

2.0.3

===============================

2.0.2

===============================

2.0.1

===============================

-  Support powershell (392)

-  Update importlib-metadata dependency to include versions 5.x (389)

-  Test and documentation improvements

2.0.0

===============================

-  Truncate input after cursor. Fixes 351 (352)

-  Support of path completion in fish 327 (359)

-  Drop support for Python 2.7 and 3.5 (361)

-  Add support for Python 3.10 (356)

-  Test, documentation, and release infrastructure improvements

1.12.3

================================

-  Update importlib-metadata version pin (345)

-  Display script debug output in tcsh (342)

-  Fish support improvements (338, 339)

-  Print ``warn()`` message from beginning of line (335)

-  Test infrastructure improvements

1.12.2

================================

-  Update importlib-metadata dependency pin (332)

-  Add change log project URL (312)

-  Replace Travis CI with GitHub Actions (323)

1.12.1

================================

-  Update importlib-metadata dependency version range

-  Bash nounset mode fixes (313)

1.11.1

================================

-  Add -o bashdefault to register-python-argcomplete’s output command
(284)

1.11.0

================================

-  Use shell builtins where possible (280)

-  Switch from pkg_resources to importlib (283)

-  Remove .sh extension by bash-completion convention (281)

-  Catch exceptions in \_check_module (269)

-  Documentation and test improvements

1.10.3

================================

-  Do not suggest options after – (end-of-options delimiter)

1.10.2

================================

-  Include all test directory contents in source distribution

1.10.1

================================

-  Trigger completers on –optional=PARTIAL_VALUE

-  Complete console scripts installed from wheels (241)

1.10.0

================================

-  Fish support 68 (260), thanks to volkov

1.9.5

===============================

-  check_module: Don’t crash, exit with error instead (261)

-  Register completion for multiple commands (246)

1.9.4

===============================

-  Use the correct interpreter when checking wrappers (226)

-  Provide shellcode as a module function (237)

1.9.3

===============================

-  Fix handling of COMP\_POINT (236)

-  Fix crash when writing unicode to debug\_stream in Python 2 (230)

1.9.2

===============================

-  Fix release

1.9.1

===============================

-  Fix release

1.9.0

===============================

-  Add SuppressCompleter to skip completion for specific arguments while
allowing help text (224)

-  Redirect all output to debug stream in debug mode (206)

-  Complete python -m module (204)

1.8.2

===============================

-  Fix bug introduced in v0.7.1 where completers would not receive the
parser keyword argument.

-  Documentation improvements.

1.8.1

===============================

-  Fix completion after tokens with wordbreak chars (197)

1.8.0

===============================

This release contains work by evanunderscore with numerous improvements
to the handling of special characters in completions.

-  Simplify nospace handling in global completion (195)

-  Specially handle all characters in COMP\_WORDBREAKS (187)

-  Use setuptools tests-require directive, fixes 186

-  Complete files using the specified interpreter (192)

-  Fix completion for scripts run via python (191)

-  Clarify argument to register-python-argcomplete (190)

-  Fix handling of commas and other special chars (172); handle more
special characters (189)

-  Fix handling of special characters in tcsh (188)

-  Update my\_shlex to Python 3.6 version (184)

-  Fix additional trailing space in exact matches (183)

-  Adjust tests to handle development environments (180)

-  Fix tcsh tests on OSX (177); Update bash on OSX (176); Check output
of test setup command (179)

-  Optionally disable duplicated flags (143)

-  Add default\_completer option to CompletionFinder.\ **call** (167)

-  Let bash add or suppress trailing space (159)

1.7.0

===============================

-  Restore parser to its original state to allow reuse after completion
(150).

-  Expose COMP\_TYPE environment variable (157). Thanks to Matt Clay
(mattclay).

-  Test infrastructure and documentation improvements.

1.6.0

===============================

-  Add support for tcsh (155)

-  Fix handling of unquoted completions containing $ (154)

-  Don't insert unnecessary leading quote char in completions (152)

-  Fix parser reuse with positional arguments (149)

-  Tests: Add simple pexpect tests for bash (153); Add test case to
verify 20 is fixed (148)

-  Thanks to davvid and evanunderscore for their work on this release.

1.5.1

===============================

-  Packaging fix

1.5.0

===============================

-  Do not suggest options from mutually exclusive groups (145).

1.4.1

==========================
- activate-global-python-argcomplete runs on Homebrew out of the box

1.4.0

==========================
- Correctly handle suggestions for positionals with variable-length nargs. Thanks to evanunderscore (132, 133).

1.3.0

==========================
- Correctly handle suggestions with custom nargs for optionals. Thanks to evanunderscore (131).

1.2.0

==========================
- Fix propagation of partially parsed subparser namespace into parent parser namespace upon subparser failure due to
partial args. This allows completers to access partial parse results for subparser optionals in parsed_args (114).
- The default completer can now be specified when manually instantiating CompletionFinder. Thanks to avylove (130).

1.1.1

==========================
- Use FilesCompleter as default completer fallback (120).

1.1.0

==========================
- Recognize subclasses of argparse._SubParsersAction. Thanks to Stephen Koo (118).
- Support parsed_args in custom completers with missing args. Thanks to Dan Kilman (124).
- Non-ASCII support in FilesCompleter.
- Automatically enable FilesCompleter for argparse.FileType arguments.

1.0.0

==========================
- Don't print args with suppressed help by default; add
``argcomplete.autocomplete(print_suppressed=True)`` to control this
behavior (113).

0.9.0

==========================
- Fix always_complete_options=False support (115).

0.8.9

==========================
- Correct doc filename in setup.cfg (fixes bdist_rpm failure, Issue 111).
- Make context managers exception-safe. Thanks to Mikołaj Siedlarek (pull request 110).

0.8.8

==========================
- Build and upload universal wheel packages in release.
- Fix issue with non-string choices for arguments. Thanks to neizod (pull request 107).
- Improve non-ascii argparse argument support on Python 2.7.

0.8.7

==========================
- register-python-argcomplete: add option to avoid default readline completion. Thanks to drmalex07 (pull request 99).

0.8.6

==========================
- Expand tilde in script name, allowing argcomplete to work when invoking scripts from one's home directory. Thanks to VorpalBlade (Issue 104).

0.8.5

==========================
- Fix issues related to using argcomplete in a REPL environment.
- New helper method for custom completion display.
- Expand test suite; formatting cleanup.

0.8.4

==========================
- Fix issue related to using argcomplete in a REPL environment. Thanks to wapiflapi (pull request 91).

0.8.3

==========================
- Fix multiple issues related to using argcomplete in a REPL environment. Thanks to wapiflapi (pull request 90).

0.8.2

==========================
- Don't strip colon prefix in completion results if COMP_WORDBREAKS does not contain a colon. Thanks to berezv (pull request 88).

0.8.1

==========================
- Use complete --nospace to avoid issues with directory completion.

0.8.0

==========================
- Refactor main body of code into a class to enable subclassing and overriding of functionality (Issue 78).

0.7.1

==========================
- New keyword option "argcomplete.autocomplete(validator=...)" to supply a custom validator or bypass default validation. Thanks to thijsdezoete (Issue 77).
- Document debug options.

0.7.0

==========================
- New keyword option "argcomplete.autocomplete(exclude=[...])" to suppress options (Issue 74).
- More speedups to code path for global completion hook negative result.

0.6.9

==========================
- Fix handling of development mode script wrappers. Thanks to jmlopez-rod and dcosson (Issue 69).
- Speed up code path for global completion hook negative result by loading pkg_resources on demand.

0.6.8

==========================
- Begin tracking changes in changelog.
- Add completion support for PBR installed scripts (PR 71).
- Detect easy-install shims with shebang lines that contain Py instead of py (Issue 69).

Links

• PyPI: https://pypi.org/project/argcomplete
• Changelog: https://data.safetycli.com/changelogs/argcomplete/
• Repo: https://github.com/kislyuk/argcomplete

Update beautifulsoup4 from 4.8.2 to 4.12.3.

Changelog

4.11.1

This release was done to ensure that the unit tests are packaged along
with the released source. There are no functionality changes in this
release, but there are a few other packaging changes:

* The Japanese and Korean translations of the documentation are included.
* The changelog is now packaged as CHANGELOG, and the license file is
packaged as LICENSE. NEWS.txt and COPYING.txt are still present,
but may be removed in the future.
* TODO.txt is no longer packaged, since a TODO is not relevant for released
code.

4.11.0

* Ported unit tests to use pytest.

* Added special string classes, RubyParenthesisString and RubyTextString,
to make it possible to treat ruby text specially in get_text() calls.
[bug=1941980]

* It's now possible to customize the way output is indented by
providing a value for the 'indent' argument to the Formatter
constructor. The 'indent' argument works very similarly to the
argument of the same name in the Python standard library's
json.dump() function. [bug=1955497]

* If the charset-normalizer Python module
(https://pypi.org/project/charset-normalizer/) is installed, Beautiful
Soup will use it to detect the character sets of incoming documents.
This is also the module used by newer versions of the Requests library.
For the sake of backwards compatibility, chardet and cchardet both take
precedence if installed. [bug=1955346]

* Added a workaround for an lxml bug
(https://bugs.launchpad.net/lxml/+bug/1948551) that causes
problems when parsing a Unicode string beginning with BYTE ORDER MARK.
[bug=1947768]

* Issue a warning when an HTML parser is used to parse a document that
looks like XML but not XHTML. [bug=1939121]

* Do a better job of keeping track of namespaces as an XML document is
parsed, so that CSS selectors that use namespaces will do the right
thing more often. [bug=1946243]

* Some time ago, the misleadingly named "text" argument to find-type
methods was renamed to the more accurate "string." But this supposed
"renaming" didn't make it into important places like the method
signatures or the docstrings. That's corrected in this
version. "text" still works, but will give a DeprecationWarning.
[bug=1947038]

* Fixed a crash when pickling a BeautifulSoup object that has no
tree builder. [bug=1934003]

* Fixed a crash when overriding multi_valued_attributes and using the
html5lib parser. [bug=1948488]

* Standardized the wording of the MarkupResemblesLocatorWarning
warnings to omit untrusted input and make the warnings less
judgmental about what you ought to be doing. [bug=1955450]

* Removed support for the iconv_codec library, which doesn't seem
to exist anymore and was never put up on PyPI. (The closest
replacement on PyPI, iconv_codecs, is GPL-licensed, so we can't use
it--it's also quite old.)

4.10.0

* This is the first release of Beautiful Soup to only support Python
3. I dropped Python 2 support to maintain support for newer versions
(58 and up) of setuptools. See:
https://github.com/pypa/setuptools/issues/2769 [bug=1942919]

* The behavior of methods like .get_text() and .strings now differs
depending on the type of tag. The change is visible with HTML tags
like <script>, <style>, and <template>. Starting in 4.9.0, methods
like get_text() returned no results on such tags, because the
contents of those tags are not considered 'text' within the document
as a whole.

But a user who calls script.get_text() is working from a different
definition of 'text' than a user who calls div.get_text()--otherwise
there would be no need to call script.get_text() at all. In 4.10.0,
the contents of (e.g.) a <script> tag are considered 'text' during a
get_text() call on the tag itself, but not considered 'text' during
a get_text() call on the tag's parent.

Because of this change, calling get_text() on each child of a tag
may now return a different result than calling get_text() on the tag
itself. That's because different tags now have different
understandings of what counts as 'text'. [bug=1906226] [bug=1868861]

* NavigableString and its subclasses now implement the get_text()
method, as well as the properties .strings and
.stripped_strings. These methods will either return the string
itself, or nothing, so the only reason to use this is when iterating
over a list of mixed Tag and NavigableString objects. [bug=1904309]

* The 'html5' formatter now treats attributes whose values are the
empty string as HTML boolean attributes. Previously (and in other
formatters), an attribute value must be set as None to be treated as
a boolean attribute. In a future release, I plan to also give this
behavior to the 'html' formatter. Patch by Isaac Muse. [bug=1915424]

* The 'replace_with()' method now takes a variable number of arguments,
and can be used to replace a single element with a sequence of elements.
Patch by Bill Chandos. [rev=605]

* Corrected output when the namespace prefix associated with a
namespaced attribute is the empty string, as opposed to
None. [bug=1915583]

* Performance improvement when processing tags that speeds up overall
tree construction by 2%. Patch by Morotti. [bug=1899358]

* Corrected the use of special string container classes in cases when a
single tag may contain strings with different containers; such as
the <template> tag, which may contain both TemplateString objects
and Comment objects. [bug=1913406]

* The html.parser tree builder can now handle named entities
found in the HTML5 spec in much the same way that the html5lib
tree builder does. Note that the lxml HTML tree builder doesn't handle
named entities this way. [bug=1924908]

* Added a second way to pass specify encodings to UnicodeDammit and
EncodingDetector, based on the order of precedence defined in the
HTML5 spec, starting at:
https://html.spec.whatwg.org/multipage/parsing.html#parsing-with-a-known-character-encoding

Encodings in 'known_definite_encodings' are tried first, then
byte-order-mark sniffing is run, then encodings in 'user_encodings'
are tried. The old argument, 'override_encodings', is now a
deprecated alias for 'known_definite_encodings'.

This changes the default behavior of the html.parser and lxml tree
builders, in a way that may slightly improve encoding
detection but will probably have no effect. [bug=1889014]

* Improve the warning issued when a directory name (as opposed to
the name of a regular file) is passed as markup into the BeautifulSoup
constructor. [bug=1913628]

4.9.3

* Implemented a significant performance optimization to the process of
searching the parse tree. Patch by Morotti. [bug=1898212]

4.9.2

* Fixed a bug that caused too many tags to be popped from the tag
stack during tree building, when encountering a closing tag that had
no matching opening tag. [bug=1880420]

* Fixed a bug that inconsistently moved elements over when passing
a Tag, rather than a list, into Tag.extend(). [bug=1885710]

* Specify the soupsieve dependency in a way that complies with
PEP 508. Patch by Mike Nerone. [bug=1893696]

* Change the signatures for BeautifulSoup.insert_before and insert_after
(which are not implemented) to match PageElement.insert_before and
insert_after, quieting warnings in some IDEs. [bug=1897120]

4.9.1

* Added a keyword argument 'on_duplicate_attribute' to the
BeautifulSoupHTMLParser constructor (used by the html.parser tree
builder) which lets you customize the handling of markup that
contains the same attribute more than once, as in:
<a href="url1" href="url2"> [bug=1878209]

* Added a distinct subclass, GuessedAtParserWarning, for the warning
issued when BeautifulSoup is instantiated without a parser being
specified. [bug=1873787]

* Added a distinct subclass, MarkupResemblesLocatorWarning, for the
warning issued when BeautifulSoup is instantiated with 'markup' that
actually seems to be a URL or the path to a file on
disk. [bug=1873787]

* The new NavigableString subclasses (Stylesheet, Script, and
TemplateString) can now be imported directly from the bs4 package.

* If you encode a document with a Python-specific encoding like
'unicode_escape', that encoding is no longer mentioned in the final
XML or HTML document. Instead, encoding information is omitted or
left blank. [bug=1874955]

* Fixed test failures when run against soupselect 2.0. Patch by Tomáš
Chvátal. [bug=1872279]

4.9.0

* Added PageElement.decomposed, a new property which lets you
check whether you've already called decompose() on a Tag or
NavigableString.

* Embedded CSS and Javascript is now stored in distinct Stylesheet and
Script tags, which are ignored by methods like get_text() since most
people don't consider this sort of content to be 'text'. This
feature is not supported by the html5lib treebuilder. [bug=1868861]

* Added a Russian translation by 'authoress' to the repository.

* Fixed an unhandled exception when formatting a Tag that had been
decomposed.[bug=1857767]

* Fixed a bug that happened when passing a Unicode filename containing
non-ASCII characters as markup into Beautiful Soup, on a system that
allows Unicode filenames. [bug=1866717]

* Added a performance optimization to PageElement.extract(). Patch by
Arthur Darcet.

4.8.2

* Added Python docstrings to all public methods of the most commonly
used classes.

* Added a Chinese translation by Deron Wang and a Brazilian Portuguese
translation by Cezar Peixeiro to the repository.

* Fixed two deprecation warnings. Patches by Colin
Watson and Nicholas Neumann. [bug=1847592] [bug=1855301]

* The html.parser tree builder now correctly handles DOCTYPEs that are
not uppercase. [bug=1848401]

* PageElement.select() now returns a ResultSet rather than a regular
list, making it consistent with methods like find_all().

4.8.1

* When the html.parser or html5lib parsers are in use, Beautiful Soup
will, by default, record the position in the original document where
each tag was encountered. This includes line number (Tag.sourceline)
and position within a line (Tag.sourcepos).  Based on code by Chris
Mayo. [bug=1742921]

* When instantiating a BeautifulSoup object, it's now possible to
provide a dictionary ('element_classes') of the classes you'd like to be
instantiated instead of Tag, NavigableString, etc.

* Fixed the definition of the default XML namespace when using
lxml 4.4. Patch by Isaac Muse. [bug=1840141]

* Fixed a crash when pretty-printing tags that were not created
during initial parsing. [bug=1838903]

* Copying a Tag preserves information that was originally obtained from
the TreeBuilder used to build the original Tag. [bug=1838903]

* Raise an explanatory exception when the underlying parser
completely rejects the incoming markup. [bug=1838877]

* Avoid a crash when trying to detect the declared encoding of a
Unicode document. [bug=1838877]

* Avoid a crash when unpickling certain parse trees generated
using html5lib on Python 3. [bug=1843545]

4.8.0

This release focuses on making it easier to customize Beautiful Soup's
input mechanism (the TreeBuilder) and output mechanism (the Formatter).

* You can customize the TreeBuilder object by passing keyword
arguments into the BeautifulSoup constructor. Those keyword
arguments will be passed along into the TreeBuilder constructor.

The main reason to do this right now is to change how which
attributes are treated as multi-valued attributes (the way 'class'
is treated by default). You can do this with the
'multi_valued_attributes' argument. [bug=1832978]

* The role of Formatter objects has been greatly expanded. The Formatter
class now controls the following:

- The function to call to perform entity substitution. (This was
 previously Formatter's only job.)
- Which tags should be treated as containing CDATA and have their
 contents exempt from entity substitution.
- The order in which a tag's attributes are output. [bug=1812422]
- Whether or not to put a '/' inside a void element, e.g. '<br/>' vs '<br>'

All preexisting code should work as before.

* Added a new method to the API, Tag.smooth(), which consolidates
multiple adjacent NavigableString elements. [bug=1697296]

* ' (which is valid in XML, XHTML, and HTML 5, but not HTML 4) is always
recognized as a named entity and converted to a single quote. [bug=1818721]

4.7.1

* Fixed a significant performance problem introduced in 4.7.0. [bug=1810617]

* Fixed an incorrectly raised exception when inserting a tag before or
after an identical tag. [bug=1810692]

* Beautiful Soup will no longer try to keep track of namespaces that
are not defined with a prefix; this can confuse soupselect. [bug=1810680]

* Tried even harder to avoid the deprecation warning originally fixed in
4.6.1. [bug=1778909]

4.7.0

* Beautiful Soup's CSS Selector implementation has been replaced by a
dependency on Isaac Muse's SoupSieve project (the soupsieve package
on PyPI). The good news is that SoupSieve has a much more robust and
complete implementation of CSS selectors, resolving a large number
of longstanding issues. The bad news is that from this point onward,
SoupSieve must be installed if you want to use the select() method.

You don't have to change anything lf you installed Beautiful Soup
through pip (SoupSieve will be automatically installed when you
upgrade Beautiful Soup) or if you don't use CSS selectors from
within Beautiful Soup.

SoupSieve documentation: https://facelessuser.github.io/soupsieve/

* Added the PageElement.extend() method, which works like list.append().
[bug=1514970]

* PageElement.insert_before() and insert_after() now take a variable
number of arguments. [bug=1514970]

* Fix a number of problems with the tree builder that caused
trees that were superficially okay, but which fell apart when bits
were extracted. Patch by Isaac Muse. [bug=1782928,1809910]

* Fixed a problem with the tree builder in which elements that
contained no content (such as empty comments and all-whitespace
elements) were not being treated as part of the tree. Patch by Isaac
Muse. [bug=1798699]

* Fixed a problem with multi-valued attributes where the value
contained whitespace. Thanks to Jens Svalgaard for the
fix. [bug=1787453]

* Clarified ambiguous license statements in the source code. Beautiful
Soup is released under the MIT license, and has been since 4.4.0.

* This file has been renamed from NEWS.txt to CHANGELOG.

4.6.3

* Exactly the same as 4.6.2. Re-released to make the README file
render properly on PyPI.

4.6.2

* Fix an exception when a custom formatter was asked to format a void
element. [bug=1784408]

4.6.1

* Stop data loss when encountering an empty numeric entity, and
possibly in other cases.  Thanks to tos.kamiya for the fix. [bug=1698503]

* Preserve XML namespaces introduced inside an XML document, not just
the ones introduced at the top level. [bug=1718787]

* Added a new formatter, "html5", which represents void elements
as "<element>" rather than "<element/>".  [bug=1716272]

* Fixed a problem where the html.parser tree builder interpreted
a string like "&foo " as the character entity "&foo;"  [bug=1728706]

* Correctly handle invalid HTML numeric character entities like &147;
which reference code points that are not Unicode code points. Note
that this is only fixed when Beautiful Soup is used with the
html.parser parser -- html5lib already worked and I couldn't fix it
with lxml.  [bug=1782933]

* Improved the warning given when no parser is specified. [bug=1780571]

* When markup contains duplicate elements, a select() call that
includes multiple match clauses will match all relevant
elements. [bug=1770596]

* Fixed code that was causing deprecation warnings in recent Python 3
versions. Includes a patch from Ville Skyttä. [bug=1778909] [bug=1689496]

* Fixed a Windows crash in diagnose() when checking whether a long
markup string is a filename. [bug=1737121]

* Stopped HTMLParser from raising an exception in very rare cases of
bad markup. [bug=1708831]

* Fixed a bug where find_all() was not working when asked to find a
tag with a namespaced name in an XML document that was parsed as
HTML. [bug=1723783]

* You can get finer control over formatting by subclassing
bs4.element.Formatter and passing a Formatter instance into (e.g.)
encode(). [bug=1716272]

* You can pass a dictionary of `attrs` into
BeautifulSoup.new_tag. This makes it possible to create a tag with
an attribute like 'name' that would otherwise be masked by another
argument of new_tag. [bug=1779276]

* Clarified the deprecation warning when accessing tag.fooTag, to cover
the possibility that you might really have been looking for a tag
called 'fooTag'.

4.6.0

* Added the `Tag.get_attribute_list` method, which acts like `Tag.get` for
getting the value of an attribute, but which always returns a list,
whether or not the attribute is a multi-value attribute. [bug=1678589]

* It's now possible to use a tag's namespace prefix when searching,
e.g. soup.find('namespace:tag') [bug=1655332]

* Improved the handling of empty-element tags like <br> when using the
html.parser parser. [bug=1676935]

* HTML parsers treat all HTML4 and HTML5 empty element tags (aka void
element tags) correctly. [bug=1656909]

* Namespace prefix is preserved when an XML tag is copied. Thanks
to Vikas for a patch and test. [bug=1685172]

4.5.3

* Fixed foster parenting when html5lib is the tree builder. Thanks to
Geoffrey Sneddon for a patch and test.

* Fixed yet another problem that caused the html5lib tree builder to
create a disconnected parse tree. [bug=1629825]

4.5.2

* Apart from the version number, this release is identical to
4.5.3. Due to user error, it could not be completely uploaded to
PyPI. Use 4.5.3 instead.

4.5.1

* Fixed a crash when passing Unicode markup that contained a
processing instruction into the lxml HTML parser on Python
3. [bug=1608048]

4.5.0

* Beautiful Soup is no longer compatible with Python 2.6. This
actually happened a few releases ago, but it's now official.

* Beautiful Soup will now work with versions of html5lib greater than
0.99999999. [bug=1603299]

* If a search against each individual value of a multi-valued
attribute fails, the search will be run one final time against the
complete attribute value considered as a single string. That is, if
a tag has class="foo bar" and neither "foo" nor "bar" matches, but
"foo bar" does, the tag is now considered a match.

This happened in previous versions, but only when the value being
searched for was a string. Now it also works when that value is
a regular expression, a list of strings, etc. [bug=1476868]

* Fixed a bug that deranged the tree when a whitespace element was
reparented into a tag that contained an identical whitespace
element. [bug=1505351]

* Added support for CSS selector values that contain quoted spaces,
such as tag[style="display: foo"]. [bug=1540588]

* Corrected handling of XML processing instructions. [bug=1504393]

* Corrected an encoding error that happened when a BeautifulSoup
object was copied. [bug=1554439]

* The contents of <textarea> tags will no longer be modified when the
tree is prettified. [bug=1555829]

* When a BeautifulSoup object is pickled but its tree builder cannot
be pickled, its .builder attribute is set to None instead of being
destroyed. This avoids a performance problem once the object is
unpickled. [bug=1523629]

* Specify the file and line number when warning about a
BeautifulSoup object being instantiated without a parser being
specified. [bug=1574647]

* The `limit` argument to `select()` now works correctly, though it's
not implemented very efficiently. [bug=1520530]

* Fixed a Python 3 ByteWarning when a URL was passed in as though it
were markup. Thanks to James Salter for a patch and
test. [bug=1533762]

* We don't run the check for a filename passed in as markup if the
'filename' contains a less-than character; the less-than character
indicates it's most likely a very small document. [bug=1577864]

4.4.1

* Fixed a bug that deranged the tree when part of it was
removed. Thanks to Eric Weiser for the patch and John Wiseman for a
test. [bug=1481520]

* Fixed a parse bug with the html5lib tree-builder. Thanks to Roel
Kramer for the patch. [bug=1483781]

* Improved the implementation of CSS selector grouping. Thanks to
Orangain for the patch. [bug=1484543]

* Fixed the test_detect_utf8 test so that it works when chardet is
installed. [bug=1471359]

* Corrected the output of Declaration objects. [bug=1477847]

4.4.0

Especially important changes:

* Added a warning when you instantiate a BeautifulSoup object without
explicitly naming a parser. [bug=1398866]

* __repr__ now returns an ASCII bytestring in Python 2, and a Unicode
string in Python 3, instead of a UTF8-encoded bytestring in both
versions. In Python 3, __str__ now returns a Unicode string instead
of a bytestring. [bug=1420131]

* The `text` argument to the find_* methods is now called `string`,
which is more accurate. `text` still works, but `string` is the
argument described in the documentation. `text` may eventually
change its meaning, but not for a very long time. [bug=1366856]

* Changed the way soup objects work under copy.copy(). Copying a
NavigableString or a Tag will give you a new NavigableString that's
equal to the old one but not connected to the parse tree. Patch by
Martijn Peters. [bug=1307490]

* Started using a standard MIT license. [bug=1294662]

* Added a Chinese translation of the documentation by Delong .w.

New features:

* Introduced the select_one() method, which uses a CSS selector but
only returns the first match, instead of a list of
matches. [bug=1349367]

* You can now create a Tag object without specifying a
TreeBuilder. Patch by Martijn Pieters. [bug=1307471]

* You can now create a NavigableString or a subclass just by invoking
the constructor. [bug=1294315]

* Added an `exclude_encodings` argument to UnicodeDammit and to the
Beautiful Soup constructor, which lets you prohibit the detection of
an encoding that you know is wrong. [bug=1469408]

* The select() method now supports selector grouping. Patch by
Francisco Canas [bug=1191917]

Bug fixes:

* Fixed yet another problem that caused the html5lib tree builder to
create a disconnected parse tree. [bug=1237763]

* Force object_was_parsed() to keep the tree intact even when an element
from later in the document is moved into place. [bug=1430633]

* Fixed yet another bug that caused a disconnected tree when html5lib
copied an element from one part of the tree to another. [bug=1270611]

* Fixed a bug where Element.extract() could create an infinite loop in
the remaining tree.

* The select() method can now find tags whose names contain
dashes. Patch by Francisco Canas. [bug=1276211]

* The select() method can now find tags with attributes whose names
contain dashes. Patch by Marek Kapolka. [bug=1304007]

* Improved the lxml tree builder's handling of processing
instructions. [bug=1294645]

* Restored the helpful syntax error that happens when you try to
import the Python 2 edition of Beautiful Soup under Python
3. [bug=1213387]

* In Python 3.4 and above, set the new convert_charrefs argument to
the html.parser constructor to avoid a warning and future
failures. Patch by Stefano Revera. [bug=1375721]

* The warning when you pass in a filename or URL as markup will now be
displayed correctly even if the filename or URL is a Unicode
string. [bug=1268888]

* If the initial <html> tag contains a CDATA list attribute such as
'class', the html5lib tree builder will now turn its value into a
list, as it would with any other tag. [bug=1296481]

* Fixed an import error in Python 3.5 caused by the removal of the
HTMLParseError class. [bug=1420063]

* Improved docstring for encode_contents() and
decode_contents(). [bug=1441543]

* Fixed a crash in Unicode, Dammit's encoding detector when the name
of the encoding itself contained invalid bytes. [bug=1360913]

* Improved the exception raised when you call .unwrap() or
.replace_with() on an element that's not attached to a tree.

* Raise a NotImplementedError whenever an unsupported CSS pseudoclass
is used in select(). Previously some cases did not result in a
NotImplementedError.

* It's now possible to pickle a BeautifulSoup object no matter which
tree builder was used to create it. However, the only tree builder
that survives the pickling process is the HTMLParserTreeBuilder
('html.parser'). If you unpickle a BeautifulSoup object created with
some other tree builder, soup.builder will be None. [bug=1231545]

4.3.2

* Fixed a bug in which short Unicode input was improperly encoded to
ASCII when checking whether or not it was the name of a file on
disk. [bug=1227016]

* Fixed a crash when a short input contains data not valid in
filenames. [bug=1232604]

* Fixed a bug that caused Unicode data put into UnicodeDammit to
return None instead of the original data. [bug=1214983]

* Combined two tests to stop a spurious test failure when tests are
run by nosetests. [bug=1212445]

4.3.1

* Fixed yet another problem with the html5lib tree builder, caused by
html5lib's tendency to rearrange the tree during
parsing. [bug=1189267]

* Fixed a bug that caused the optimized version of find_all() to
return nothing. [bug=1212655]

4.3.0

* Instead of converting incoming data to Unicode and feeding it to the
lxml tree builder in chunks, Beautiful Soup now makes successive
guesses at the encoding of the incoming data, and tells lxml to
parse the data as that encoding. Giving lxml more control over the
parsing process improves performance and avoids a number of bugs and
issues with the lxml parser which had previously required elaborate
workarounds:

- An issue in which lxml refuses to parse Unicode strings on some
 systems. [bug=1180527]

- A returning bug that truncated documents longer than a (very
 small) size. [bug=963880]

- A returning bug in which extra spaces were added to a document if
 the document defined a charset other than UTF-8. [bug=972466]

This required a major overhaul of the tree builder architecture. If
you wrote your own tree builder and didn't tell me, you'll need to
modify your prepare_markup() method.

* The UnicodeDammit code that makes guesses at encodings has been
split into its own class, EncodingDetector. A lot of apparently
redundant code has been removed from Unicode, Dammit, and some
undocumented features have also been removed.

* Beautiful Soup will issue a warning if instead of markup you pass it
a URL or the name of a file on disk (a common beginner's mistake).

* A number of optimizations improve the performance of the lxml tree
builder by about 33%, the html.parser tree builder by about 20%, and
the html5lib tree builder by about 15%.

* All find_all calls should now return a ResultSet object. Patch by
Aaron DeVore. [bug=1194034]

4.2.1

* The default XML formatter will now replace ampersands even if they
appear to be part of entities. That is, "<" will become
"<". The old code was left over from Beautiful Soup 3, which
didn't always turn entities into Unicode characters.

If you really want the old behavior (maybe because you add new
strings to the tree, those strings include entities, and you want
the formatter to leave them alone on output), it can be found in
EntitySubstitution.substitute_xml_containing_entities(). [bug=1182183]

* Gave new_string() the ability to create subclasses of
NavigableString. [bug=1181986]

* Fixed another bug by which the html5lib tree builder could create a
disconnected tree. [bug=1182089]

* The .previous_element of a BeautifulSoup object is now always None,
not the last element to be parsed. [bug=1182089]

* Fixed test failures when lxml is not installed. [bug=1181589]

* html5lib now supports Python 3. Fixed some Python 2-specific
code in the html5lib test suite. [bug=1181624]

* The html.parser treebuilder can now handle numeric attributes in
text when the hexidecimal name of the attribute starts with a
capital X. Patch by Tim Shirley. [bug=1186242]

4.2.0

* The Tag.select() method now supports a much wider variety of CSS
selectors.

- Added support for the adjacent sibling combinator (+) and the
general sibling combinator (~). Tests by "liquider". [bug=1082144]

- The combinators (>, +, and ~) can now combine with any supported
selector, not just one that selects based on tag name.

- Added limited support for the "nth-of-type" pseudo-class. Code
by Sven Slootweg. [bug=1109952]

* The BeautifulSoup class is now aliased to "_s" and "_soup", making
it quicker to type the import statement in an interactive session:

from bs4 import _s
or
from bs4 import _soup

The alias may change in the future, so don't use this in code you're
going to run more than once.

* Added the 'diagnose' submodule, which includes several useful
functions for reporting problems and doing tech support.

- diagnose(data) tries the given markup on every installed parser,
 reporting exceptions and displaying successes. If a parser is not
 installed, diagnose() mentions this fact.

- lxml_trace(data, html=True) runs the given markup through lxml's
 XML parser or HTML parser, and prints out the parser events as
 they happen. This helps you quickly determine whether a given
 problem occurs in lxml code or Beautiful Soup code.

- htmlparser_trace(data) is the same thing, but for Python's
 built-in HTMLParser class.

* In an HTML document, the contents of a <script> or <style> tag will
no longer undergo entity substitution by default. XML documents work
the same way they did before. [bug=1085953]

* Methods like get_text() and properties like .strings now only give
you strings that are visible in the document--no comments or
processing commands. [bug=1050164]

* The prettify() method now leaves the contents of <pre> tags
alone. [bug=1095654]

* Fix a bug in the html5lib treebuilder which sometimes created
disconnected trees. [bug=1039527]

* Fix a bug in the lxml treebuilder which crashed when a tag included
an attribute from the predefined "xml:" namespace. [bug=1065617]

* Fix a bug by which keyword arguments to find_parent() were not
being passed on. [bug=1126734]

* Stop a crash when unwisely messing with a tag that's been
decomposed. [bug=1097699]

* Now that lxml's segfault on invalid doctype has been fixed, fixed a
corresponding problem on the Beautiful Soup end that was previously
invisible. [bug=984936]

* Fixed an exception when an overspecified CSS selector didn't match
anything. Code by Stefaan Lippens. [bug=1168167]

4.1.3

* Skipped a test under Python 2.6 and Python 3.1 to avoid a spurious
test failure caused by the lousy HTMLParser in those
versions. [bug=1038503]

* Raise a more specific error (FeatureNotFound) when a requested
parser or parser feature is not installed. Raise NotImplementedError
instead of ValueError when the user calls insert_before() or
insert_after() on the BeautifulSoup object itself. Patch by Aaron
Devore. [bug=1038301]

4.1.2

* As per PEP-8, allow searching by CSS class using the 'class_'
keyword argument. [bug=1037624]

* Display namespace prefixes for namespaced attribute names, instead of
the fully-qualified names given by the lxml parser. [bug=1037597]

* Fixed a crash on encoding when an attribute name contained
non-ASCII characters.

* When sniffing encodings, if the cchardet library is installed,
Beautiful Soup uses it instead of chardet. cchardet is much
faster. [bug=1020748]

* Use logging.warning() instead of warning.warn() to notify the user
that characters were replaced with REPLACEMENT
CHARACTER. [bug=1013862]

4.1.1

* Fixed an html5lib tree builder crash which happened when html5lib
moved a tag with a multivalued attribute from one part of the tree
to another. [bug=1019603]

* Correctly display closing tags with an XML namespace declared. Patch
by Andreas Kostyrka. [bug=1019635]

* Fixed a typo that made parsing significantly slower than it should
have been, and also waited too long to close tags with XML
namespaces. [bug=1020268]

* get_text() now returns an empty Unicode string if there is no text,
rather than an empty bytestring. [bug=1020387]

4.1.0

* Added experimental support for fixing Windows-1252 characters
embedded in UTF-8 documents. (UnicodeDammit.detwingle())

* Fixed the handling of " with the built-in parser. [bug=993871]

* Comments, processing instructions, document type declarations, and
markup declarations are now treated as preformatted strings, the way
CData blocks are. [bug=1001025]

* Fixed a bug with the lxml treebuilder that prevented the user from
adding attributes to a tag that didn't originally have
attributes. [bug=1002378] Thanks to Oliver Beattie for the patch.

* Fixed some edge-case bugs having to do with inserting an element
into a tag it's already inside, and replacing one of a tag's
children with another. [bug=997529]

* Added the ability to search for attribute values specified in UTF-8. [bug=1003974]

This caused a major refactoring of the search code. All the tests
pass, but it's possible that some searches will behave differently.

4.0.5

* Added a new method, wrap(), which wraps an element in a tag.

* Renamed replace_with_children() to unwrap(), which is easier to
understand and also the jQuery name of the function.

* Made encoding substitution in <meta> tags completely transparent (no
more %SOUP-ENCODING%).

* Fixed a bug in decoding data that contained a byte-order mark, such
as data encoded in UTF-16LE. [bug=988980]

* Fixed a bug that made the HTMLParser treebuilder generate XML
definitions ending with two question marks instead of
one. [bug=984258]

* Upon document generation, CData objects are no longer run through
the formatter. [bug=988905]

* The test suite now passes when lxml is not installed, whether or not
html5lib is installed. [bug=987004]

* Print a warning on HTMLParseErrors to let people know they should
install a better parser library.

4.0.4

* Fixed a bug that sometimes created disconnected trees.

* Fixed a bug with the string setter that moved a string around the
tree instead of copying it. [bug=983050]

* Attribute values are now run through the provided output formatter.
Previously they were always run through the 'minimal' formatter. In
the future I may make it possible to specify different formatters
for attribute values and strings, but for now, consistent behavior
is better than inconsistent behavior. [bug=980237]

* Added the missing renderContents method from Beautiful Soup 3. Also
added an encode_contents() method to go along with decode_contents().

* Give a more useful error when the user tries to run the Python 2
version of BS under Python 3.

* UnicodeDammit can now convert Microsoft smart quotes to ASCII with
UnicodeDammit(markup, smart_quotes_to="ascii").

4.0.3

* Fixed a typo that caused some versions of Python 3 to convert the
Beautiful Soup codebase incorrectly.

* Got rid of the 4.0.2 workaround for HTML documents--it was
unnecessary and the workaround was triggering a (possibly different,
but related) bug in lxml. [bug=972466]

4.0.2

* Worked around a possible bug in lxml that prevents non-tiny XML
documents from being parsed. [bug=963880, bug=963936]

* Fixed a bug where specifying `text` while also searching for a tag
only worked if `text` wanted an exact string match. [bug=955942]

4.0.1

* This is the first official release of Beautiful Soup 4. There is no

4.0.0

might treat "4.0.0" as being an earlier version than "4.0.0b10".

* Brought BS up to date with the latest release of soupselect, adding
CSS selector support for direct descendant matches and multiple CSS
class matches.

4.0.0b10

* Added support for simple CSS selectors, taken from the soupselect project.

* Fixed a crash when using html5lib. [bug=943246]

* In HTML5-style <meta charset="foo"> tags, the value of the "charset"
attribute is now replaced with the appropriate encoding on
output. [bug=942714]

* Fixed a bug that caused calling a tag to sometimes call find_all()
with the wrong arguments. [bug=944426]

* For backwards compatibility, brought back the BeautifulStoneSoup
class as a deprecated wrapper around BeautifulSoup.

4.0.0b9

* Fixed the string representation of DOCTYPEs that have both a public
ID and a system ID.

* Fixed the generated XML declaration.

* Renamed Tag.nsprefix to Tag.prefix, for consistency with
NamespacedAttribute.

* Fixed a test failure that occurred on Python 3.x when chardet was
installed.

* Made prettify() return Unicode by default, so it will look nice on
Python 3 when passed into print().

4.0.0b8

* All tree builders now preserve namespace information in the
documents they parse. If you use the html5lib parser or lxml's XML
parser, you can access the namespace URL for a tag as tag.namespace.

However, there is no special support for namespace-oriented
searching or tree manipulation. When you search the tree, you need
to use namespace prefixes exactly as they're used in the original
document.

* The string representation of a DOCTYPE always ends in a newline.

* Issue a warning if the user tries to use a SoupStrainer in
conjunction with the html5lib tree builder, which doesn't support
them.

4.0.0b7

* Upon decoding to string, any characters that can't be represented in
your chosen encoding will be converted into numeric XML entity
references.

* Issue a warning if characters were replaced with REPLACEMENT
CHARACTER during Unicode conversion.

* Restored compatibility with Python 2.6.

* The install process no longer installs docs or auxiliary text files.

* It's now possible to deepcopy a BeautifulSoup object created with
Python's built-in HTML parser.

* About 100 unit tests that "test" the behavior of various parsers on
invalid markup have been removed. Legitimate changes to those
parsers caused these tests to fail, indicating that perhaps
Beautiful Soup should not test the behavior of foreign
libraries.

The problematic unit tests have been reformulated as informational
comparisons generated by the script
scripts/demonstrate_parser_differences.py.

This makes Beautiful Soup compatible with html5lib version 0.95 and
future versions of HTMLParser.

4.0.0b6

* Multi-valued attributes like "class" always have a list of values,
even if there's only one value in the list.

* Added a number of multi-valued attributes defined in HTML5.

* Stopped generating a space before the slash that closes an
empty-element tag. This may come back if I add a special XHTML mode
(http://www.w3.org/TR/xhtml1/#C_2), but right now it's pretty
useless.

* Passing text along with tag-specific arguments to a find* method:

find("a", text="Click here")

will find tags that contain the given text as their
.string. Previously, the tag-specific arguments were ignored and
only strings were searched.

* Fixed a bug that caused the html5lib tree builder to build a
partially disconnected tree. Generally cleaned up the html5lib tree
builder.

* If you restrict a multi-valued attribute like "class" to a string
that contains spaces, Beautiful Soup will only consider it a match
if the values correspond to that specific string.

4.0.0b5

* Rationalized Beautiful Soup's treatment of CSS class. A tag
belonging to multiple CSS classes is treated as having a list of
values for the 'class' attribute. Searching for a CSS class will
match *any* of the CSS classes.

This actually affects all attributes that the HTML standard defines
as taking multiple values (class, rel, rev, archive, accept-charset,
and headers), but 'class' is by far the most common. [bug=41034]

* If you pass anything other than a dictionary as the second argument
to one of the find* methods, it'll assume you want to use that
object to search against a tag's CSS classes. Previously this only
worked if you passed in a string.

* Fixed a bug that caused a crash when you passed a dictionary as an
attribute value (possibly because you mistyped "attrs"). [bug=842419]

* Unicode, Dammit now detects the encoding in HTML 5-style <meta> tags
like <meta charset="utf-8" />. [bug=837268]

* If Unicode, Dammit can't figure out a consistent encoding for a
page, it will try each of its guesses again, with errors="replace"
instead of errors="strict". This may mean that some data gets
replaced with REPLACEMENT CHARACTER, but at least most of it will
get turned into Unicode. [bug=754903]

* Patched over a bug in html5lib (?) that was crashing Beautiful Soup
on certain kinds of markup. [bug=838800]

* Fixed a bug that wrecked the tree if you replaced an element with an
empty string. [bug=728697]

* Improved Unicode, Dammit's behavior when you give it Unicode to
begin with.

4.0.0b4

* Added BeautifulSoup.new_string() to go along with BeautifulSoup.new_tag()

* BeautifulSoup.new_tag() will follow the rules of whatever
tree-builder was used to create the original BeautifulSoup object. A
new <p> tag will look like "<p />" if the soup object was created to
parse XML, but it will look like "<p></p>" if the soup object was
created to parse HTML.

* We pass in strict=False to html.parser on Python 3, greatly
improving html.parser's ability to handle bad HTML.

* We also monkeypatch a serious bug in html.parser that made
strict=False disastrous on Python 3.2.2.

* Replaced the "substitute_html_entities" argument with the
more general "formatter" argument.

* Bare ampersands and angle brackets are always converted to XML
entities unless the user prevents it.

* Added PageElement.insert_before() and PageElement.insert_after(),
which let you put an element into the parse tree with respect to
some other element.

* Raise an exception when the user tries to do something nonsensical
like insert a tag into itself.

4.0.0b3

Beautiful Soup 4 is a nearly-complete rewrite that removes Beautiful
Soup's custom HTML parser in favor of a system that lets you write a
little glue code and plug in any HTML or XML parser you want.

Beautiful Soup 4.0 comes with glue code for four parsers:

* Python's standard HTMLParser (html.parser in Python 3)
* lxml's HTML and XML parsers
* html5lib's HTML parser

HTMLParser is the default, but I recommend you install lxml if you
can.

For complete documentation, see the Sphinx documentation in
bs4/doc/source/. What follows is a summary of the changes from
Beautiful Soup 3.

=== The module name has changed ===

Previously you imported the BeautifulSoup class from a module also
called BeautifulSoup. To save keystrokes and make it clear which
version of the API is in use, the module is now called 'bs4':

 >>> from bs4 import BeautifulSoup

=== It works with Python 3 ===

Beautiful Soup 3.1.0 worked with Python 3, but the parser it used was
so bad that it barely worked at all. Beautiful Soup 4 works with
Python 3, and since its parser is pluggable, you don't sacrifice
quality.

Special thanks to Thomas Kluyver and Ezio Melotti for getting Python 3
support to the finish line. Ezio Melotti is also to thank for greatly
improving the HTML parser that comes with Python 3.2.

=== CDATA sections are normal text, if they're understood at all. ===

Currently, the lxml and html5lib HTML parsers ignore CDATA sections in
markup:

<p><![CDATA[foo]]></p> => <p></p>

A future version of html5lib will turn CDATA sections into text nodes,
but only within tags like <svg> and <math>:

<svg><![CDATA[foo]]></svg> => <p>foo</p>

The default XML parser (which uses lxml behind the scenes) turns CDATA
sections into ordinary text elements:

<p><![CDATA[foo]]></p> => <p>foo</p>

In theory it's possible to preserve the CDATA sections when using the
XML parser, but I don't see how to get it to work in practice.

=== Miscellaneous other stuff ===

If the BeautifulSoup instance has .is_xml set to True, an appropriate
XML declaration will be emitted when the tree is transformed into a
string:

 <?xml version="1.0" encoding="utf-8">
 <markup>
  ...
 </markup>

The ['lxml', 'xml'] tree builder sets .is_xml to True; the other tree
builders set it to False. If you want to parse XHTML with an HTML
parser, you can set it manually.

3.2

to make it obvious which one you should use.

3.1.0

A hybrid version that supports 2.4 and can be automatically converted
to run under Python 3.0. There are three backwards-incompatible
changes you should be aware of, but no new features or deliberate
behavior changes.

1. str() may no longer do what you want. This is because the meaning
of str() inverts between Python 2 and 3; in Python 2 it gives you a
byte string, in Python 3 it gives you a Unicode string.

The effect of this is that you can't pass an encoding to .__str__
anymore. Use encode() to get a string and decode() to get Unicode, and
you'll be ready (well, readier) for Python 3.

2. Beautiful Soup is now based on HTMLParser rather than SGMLParser,
which is gone in Python 3. There's some bad HTML that SGMLParser
handled but HTMLParser doesn't, usually to do with attribute values
that aren't closed or have brackets inside them:

<a hr