[RELEASED] Python 3.3.0 alpha 1

Georg Brandl georg at python.org
Mon Apr 2 07:43:52 CEST 2012

Hash: SHA1

On behalf of the Python development team, I'm happy to announce the
second alpha 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)
* PEP 409, Suppressing Exception Context
* PEP 3151, Reworking the OS and IO exception hierarchy
* A C implementation of the "decimal" module, with up to 80x speedup
  for decimal-heavy applications
* The new "packaging" module, building upon the "distribute" and
  "distutils2" projects and deprecating "distutils"
* The new "lzma" module with LZMA/XZ support
* PEP 3155, Qualified name for classes and functions
* PEP 414, explicit Unicode literals to help with porting
* The new "faulthandler" module that helps diagnosing crashes
* 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.

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:


Please consider trying Python 3.3.0 with your code and reporting any bugs
you may notice to:



(*) 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)
Version: GnuPG v2.0.19 (GNU/Linux)


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