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Python 3.3.5rc1

Release Date: Feb. 23, 2014

Python 3.3.5 was released on March 9th, 2014.

Python 3.3.5 includes fixes for these important issues:

and also fixes quite a few other bugs.

This release fully supports OS X 10.9 Mavericks. In particular, this release fixes an issue that could cause previous versions of Python to crash when typing in interactive mode on OS X 10.9.

Major new features of the 3.3 series, compared to 3.2

Python 3.3 includes a range of improvements of the 3.x series, as well as easier porting between 2.x and 3.x.

  • 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__) is 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

More resources

Download

This is a production release. Please report any bugs you encounter.

Please proceed to the download page for the download.

Files

Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 612fdfa58da740155fc05e42fdeddcd1 69416960 SIG
XZ compressed source tarball Source release 91afd237a2e378476c6d4616b2a69dda 12103472 SIG
Mac OS X 32-bit i386/PPC installer Mac OS X for Mac OS X 10.5 and later 8ab7ec6d3e81ead6b3578f6bf75810d9 19963194 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later 60aaf53e0ebb5a7ecd2349f212c62835 20017628 SIG
Windows debug information files Windows 539cfc3b15ce42603bfaadd471e9c158 27050536 SIG
Windows help file Windows d8993436235be56dfddc304f0c1d6237 6708839 SIG
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64, not Itanium processors 97bb3692b165df901b1e72226d413fe6 21209088 SIG
Windows x86 MSI installer Windows 981592c6735608d584ab871ae0714f80 20660224 SIG