Notice: While Javascript is not essential for this website, your interaction with the content will be limited. Please turn Javascript on for the full experience.

Python 3.3.4 Release

Python 3.3.x has reached end-of-life. Python 3.3.7, the final security-fix release, is available here.

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

More resources

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.