Python 3.3.4 Release

Python 3.3.4

Note: A newer bugfix release, 3.3.5, is currently available. Its use is recommended.

Python 3.3.4 was released on February 9th, 2014. This release fixes several security and a lot of overall bug fixes found in Python 3.3.3.

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

Download

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

We support these formats for download:

The source tarballs are signed with Georg Brandl's key, which has a key id of 36580288; the fingerprint is 26DE A9D4 6133 91EF 3E25 C9FF 0A5B 1018 3658 0288. The Windows installer was signed by Martin von Lรถwis' public key, which has a key id of 7D9DC8D2. The Mac installers were signed with Ned Deily's key, which has a key id of 6F5E1540. The public keys are located on the download page.

MD5 checksums and sizes of the released files:

9f7df0dde690132c63b1dd2b640ed3a6  16843278  Python-3.3.4.tgz
8fb961a20600aafafd249537af3ac637  12087568  Python-3.3.4.tar.xz
22501eb8acaaa849c834c5596c3cee37  19914620  python-3.3.4-macosx10.5.dmg
7ca8dab58e94f475418792ba2294b73f  19991575  python-3.3.4-macosx10.6.dmg
7622e1a5f3cb8477683700cfc35ba728  27050536  python-3.3.4-pdb.zip
0c59a8242be497ecc3bba27936aa0cd8  22153590  python-3.3.4.amd64-pdb.zip
fe66db6a92f8135cbbefa3265e8a99ec  21168128  python-3.3.4.amd64.msi
839af9c8044a1c45338b618294d7a6f3  20627456  python-3.3.4.msi
a2df0ea91babdefaebbf6a2f919a18b2   6704894  python334.chm
[1]The binaries for AMD64 will also work on processors that implement the Intel 64 architecture (formerly EM64T), i.e. the architecture that Microsoft calls x64, and AMD called x86-64 before calling it AMD64. They will not work on Intel Itanium Processors (formerly IA-64).
[2](1, 2) There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here.

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