[Python-Dev] [RELEASED] Python 3.3.0 beta 1

[Calvin Spealman]

All,

Congradulations. This is a big one!



On Wed, Jun 27, 2012 at 2:10 AM, Georg Brandl <georg at python.org> wrote:
> On behalf of the Python development team, I'm happy to announce the
> first beta release of Python 3.3.0.
>
> This is a preview release, and its use is not recommended in
> production settings.
>
> 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 80x 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/
>
> Please consider trying Python 3.3.0 with your code and reporting any bugs
> you may notice to:
>
>    http://bugs.python.org/
>
>
> Enjoy!
>
> (*) Please note that this document is usually finalized late in the release
>    cycle and therefore may have stubs and missing entries at this point.
>
> --
> 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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