[RELEASED] Python 3.3.0 alpha 1
georg at python.org
Mon Apr 2 07:43:52 CEST 2012
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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
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
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)
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