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+****************************
+ What's New In Python 3.3
+****************************
+
+:Author: Raymond Hettinger
+:Release: |release|
+:Date: |today|
+
+.. $Id$
+ Rules for maintenance:
+
+ * Anyone can add text to this document. Do not spend very much time
+ on the wording of your changes, because your text will probably
+ get rewritten to some degree.
+
+ * The maintainer will go through Misc/NEWS periodically and add
+ changes; it's therefore more important to add your changes to
+ Misc/NEWS than to this file.
+
+ * This is not a complete list of every single change; completeness
+ is the purpose of Misc/NEWS. Some changes I consider too small
+ or esoteric to include. If such a change is added to the text,
+ I'll just remove it. (This is another reason you shouldn't spend
+ too much time on writing your addition.)
+
+ * If you want to draw your new text to the attention of the
+ maintainer, add 'XXX' to the beginning of the paragraph or
+ section.
+
+ * It's OK to just add a fragmentary note about a change. For
+ example: "XXX Describe the transmogrify() function added to the
+ socket module." The maintainer will research the change and
+ write the necessary text.
+
+ * You can comment out your additions if you like, but it's not
+ necessary (especially when a final release is some months away).
+
+ * Credit the author of a patch or bugfix. Just the name is
+ sufficient; the e-mail address isn't necessary.
+
+ * It's helpful to add the bug/patch number as a comment:
+
+ % Patch 12345
+ XXX Describe the transmogrify() function added to the socket
+ module.
+ (Contributed by P.Y. Developer.)
+
+ This saves the maintainer the effort of going through the SVN log
+ when researching a change.
+
+This article explains the new features in Python 3.3, compared to 3.2.
+
+
+PEP XXX: Stub
+=============
+
+
+Other Language Changes
+======================
+
+Some smaller changes made to the core Python language are:
+
+* Stub
+
+
+New, Improved, and Deprecated Modules
+=====================================
+
+* Stub
+
+codecs
+------
+
+Multibyte CJK decoders now resynchronize faster. They only ignore the first
+byte of an invalid byte sequence. For example, ``b'\xff\n'.decode('gb2312',
+'replace')`` now returns a ``\n`` after the replacement character.
+
+(:issue:`12016`)
+
+Don't reset incremental encoders of CJK codecs at each call to their encode()
+method anymore. For example::
+
+ $ ./python -q
+ >>> import codecs
+ >>> encoder = codecs.getincrementalencoder('hz')('strict')
+ >>> b''.join(encoder.encode(x) for x in '\u52ff\u65bd\u65bc\u4eba\u3002 Bye.')
+ b'~{NpJ)l6HK!#~} Bye.'
+
+This example gives ``b'~{Np~}~{J)~}~{l6~}~{HK~}~{!#~} Bye.'`` with older Python
+versions.
+
+(:issue:`12100`)
+
+curses
+------
+
+The :class:`curses.window` class has a new :meth:`~curses.window.get_wch` method
+to get a wide character. Patch by Iñigo Serna.
+
+(:issue:`6755`)
+
+faulthandler
+------------
+
+New module: :mod:`faulthandler`.
+
+ * :envvar:`PYTHONFAULTHANDLER`
+ * :option:`-X` ``faulthandler``
+
+
+math
+----
+
+The :mod:`math` module has a new function:
+
+ * :func:`~math.log2`: return the base-2 logarithm of *x*
+ (Written by Mark Dickinson in :issue:`11888`).
+
+
+nntplib
+-------
+
+The :class:`nntplib.NNTP` class now supports the context manager protocol to
+unconditionally consume :exc:`socket.error` exceptions and to close the NNTP
+connection when done::
+
+ >>> from nntplib import NNTP
+ >>> with NNTP('news.gmane.org') as n:
+ ... n.group('gmane.comp.python.committers')
+ ...
+ ('211 1755 1 1755 gmane.comp.python.committers', 1755, 1, 1755, 'gmane.comp.python.committers')
+ >>>
+
+(Contributed by Giampaolo Rodolà in :issue:`9795`)
+
+
+os
+--
+
+* The :mod:`os` module has a new :func:`~os.pipe2` function that makes it
+ possible to create a pipe with :data:`~os.O_CLOEXEC` or
+ :data:`~os.O_NONBLOCK` flags set atomically. This is especially useful to
+ avoid race conditions in multi-threaded programs.
+
+* The :mod:`os` module has a new :func:`~os.sendfile` function which provides
+ an efficent "zero-copy" way for copying data from one file (or socket)
+ descriptor to another. The phrase "zero-copy" refers to the fact that all of
+ the copying of data between the two descriptors is done entirely by the
+ kernel, with no copying of data into userspace buffers. :func:`~os.sendfile`
+ can be used to efficiently copy data from a file on disk to a network socket,
+ e.g. for downloading a file.
+
+ (Patch submitted by Ross Lagerwall and Giampaolo Rodolà in :issue:`10882`.)
+
+* The :mod:`os` module has two new functions: :func:`~os.getpriority` and
+ :func:`~os.setpriority`. They can be used to get or set process
+ niceness/priority in a fashion similar to :func:`os.nice` but extended to all
+ processes instead of just the current one.
+
+ (Patch submitted by Giampaolo Rodolà in :issue:`10784`.)
+
+
+packaging
+---------
+
+:mod:`distutils` has undergone additions and refactoring under a new name,
+:mod:`packaging`, to allow developers to break backward compatibility.
+:mod:`distutils` is still provided in the standard library, but users are
+encouraged to transition to :mod:`packaging`. For older versions of Python, a
+backport compatible with 2.4+ and 3.1+ will be made available on PyPI under the
+name :mod:`distutils2`.
+
+.. TODO add examples and howto to the packaging docs and link to them
+
+
+pydoc
+-----
+
+The Tk GUI and the :func:`~pydoc.serve` function have been removed from the
+:mod:`pydoc` module: ``pydoc -g`` and :func:`~pydoc.serve` have been deprecated
+in Python 3.2.
+
+
+sys
+---
+
+* The :mod:`sys` module has a new :func:`~sys.thread_info` :term:`struct
+ sequence` holding informations about the thread implementation.
+
+ (:issue:`11223`)
+
+
+signal
+------
+
+* The :mod:`signal` module has new functions:
+
+ * :func:`~signal.pthread_sigmask`: fetch and/or change the signal mask of the
+ calling thread (Contributed by Jean-Paul Calderone in :issue:`8407`) ;
+ * :func:`~signal.pthread_kill`: send a signal to a thread ;
+ * :func:`~signal.sigpending`: examine pending functions ;
+ * :func:`~signal.sigwait`: wait a signal.
+ * :func:`~signal.sigwaitinfo`: wait for a signal, returning detailed
+ information about it.
+ * :func:`~signal.sigtimedwait`: like :func:`~signal.sigwaitinfo` but with a
+ timeout.
+
+* The signal handler writes the signal number as a single byte instead of
+ a nul byte into the wakeup file descriptor. So it is possible to wait more
+ than one signal and know which signals were raised.
+
+* :func:`signal.signal` and :func:`signal.siginterrupt` raise an OSError,
+ instead of a RuntimeError: OSError has an errno attribute.
+
+
+ssl
+---
+
+The :mod:`ssl` module has new functions:
+
+ * :func:`~ssl.RAND_bytes`: generate cryptographically strong
+ pseudo-random bytes.
+ * :func:`~ssl.RAND_pseudo_bytes`: generate pseudo-random bytes.
+
+
+ftplib
+------
+
+The :class:`~ftplib.FTP_TLS` class now provides a new
+:func:`~ftplib.FTP_TLS.ccc` function to revert control channel back to
+plaintex. This can be useful to take advantage of firewalls that know how to
+handle NAT with non-secure FTP without opening fixed ports.
+
+(Contributed by Giampaolo Rodolà in :issue:`12139`)
+
+
+shutil
+------
+
+The :mod:`shutil` module has a new :func:`~shutil.disk_usage` function providing total,
+used and free disk space statistics.
+
+(Contributed by Giampaolo Rodolà in :issue:`12442`)
+
+
+Optimizations
+=============
+
+Major performance enhancements have been added:
+
+* Stub
+
+
+Build and C API Changes
+=======================
+
+Changes to Python's build process and to the C API include:
+
+* Stub
+
+
+Unsupported Operating Systems
+=============================
+
+OS/2 and VMS are no longer supported due to the lack of a maintainer.
+
+Windows 2000 and Windows platforms which set ``COMSPEC`` to ``command.com``
+are no longer supported due to maintenance burden.
+
+
+Porting to Python 3.3
+=====================
+
+This section lists previously described changes and other bugfixes
+that may require changes to your code:
+
+* Stub
+
+
+.. Issue #11591: When :program:`python` was started with :option:`-S`,
+ ``import site`` will not add site-specific paths to the module search
+ paths. In previous versions, it did. See changeset for doc changes in
+ various files. Contributed by Carl Meyer with editions by Éric Araujo.
+
+.. Issue #10998: -Q command-line flags are related artifacts have been
+ removed. Code checking sys.flags.division_warning will need updating.
+ Contributed by Éric Araujo.