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[RELEASED] Python 3.3.0

 
 
Georg Brandl
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      09-29-2012
On behalf of the Python development team, I'm delighted to announce the
Python 3.3.0 final release.

Python 3.3 includes a range of improvements of the 3.x series, as well
as easier porting between 2.x and 3.x. Major new features and changes
in the 3.3 release series are:

* PEP 380, syntax for delegating to a subgenerator ("yield from")
* PEP 393, flexible string representation (doing away with the
distinction between "wide" and "narrow" Unicode builds)
* A C implementation of the "decimal" module, with up to 120x speedup
for decimal-heavy applications
* The import system (__import__) now based on importlib by default
* The new "lzma" module with LZMA/XZ support
* PEP 397, a Python launcher for Windows
* PEP 405, virtual environment support in core
* PEP 420, namespace package support
* PEP 3151, reworking the OS and IO exception hierarchy
* PEP 3155, qualified name for classes and functions
* PEP 409, suppressing exception context
* PEP 414, explicit Unicode literals to help with porting
* PEP 418, extended platform-independent clocks in the "time" module
* PEP 412, a new key-sharing dictionary implementation that
significantly saves memory for object-oriented code
* PEP 362, the function-signature object
* The new "faulthandler" module that helps diagnosing crashes
* The new "unittest.mock" module
* The new "ipaddress" module
* The "sys.implementation" attribute
* A policy framework for the email package, with a provisional (see
PEP 411) policy that adds much improved unicode support for email
header parsing
* A "collections.ChainMap" class for linking mappings to a single unit
* Wrappers for many more POSIX functions in the "os" and "signal"
modules, as well as other useful functions such as "sendfile()"
* Hash randomization, introduced in earlier bugfix releases, is now
switched on by default

In total, almost 500 API items are new or improved in Python 3.3.
For a more extensive list of changes in 3.3.0, see

http://docs.python.org/3.3/whatsnew/3.3.html

To download Python 3.3.0 visit:

http://www.python.org/download/releases/3.3.0/

This is a production release, please report any bugs to

http://bugs.python.org/


Enjoy!

--
Georg Brandl, Release Manager
georg at python.org
(on behalf of the entire python-dev team and 3.3's contributors)
 
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