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Python 3.3.2

Release Date: May 15, 2013

regressions <>`_ found in Python 3.3.1.

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


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

We currently 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 Löwis' 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:

0a2ea57f6184baf45b150aee53c0c8da  16530940  Python-3.3.2.tgz
7dffe775f3bea68a44f762a3490e5e28  13983134  Python-3.3.2.tar.bz2
c94b78ea3b68a9bbc9906af4d5b4fdc7  11847676  Python-3.3.2.tar.xz
9d6094d54f5200d9c13d11c98d283cfe  19618740  python-3.3.2-macosx10.5.dmg
ce63202f4a6caa956dac2116e21a29f4  19709642  python-3.3.2-macosx10.6.dmg
2a3911ed48b54ce0a25683c72154a5ca  27025960
7ed2a017ae4f24413c9933dfba755364  22137206
2477b4bd8e9a337705f7b5fda8b3b45f  20774912  python-3.3.2.amd64.msi
0d9db9c2316562c62e1e4c347b6f9430  20238336  python-3.3.2.msi
e7eb67a7defbed74cbcf08b574f01f52   6605621  python332.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.

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release da521bfb9cc85b259b3e1dd154208325 65.5 MB SIG
XZ compressed source tarball Source release c94b78ea3b68a9bbc9906af4d5b4fdc7 11.3 MB SIG
bzip2 compressed source tarball Source release 7dffe775f3bea68a44f762a3490e5e28 13.3 MB SIG
Mac OS X 32-bit i386/PPC installer macOS for Mac OS X 10.5 and later 9d6094d54f5200d9c13d11c98d283cfe 18.7 MB SIG
Mac OS X 64-bit/32-bit installer macOS for Mac OS X 10.6 and later ce63202f4a6caa956dac2116e21a29f4 18.8 MB SIG
Windows help file Windows e7eb67a7defbed74cbcf08b574f01f52 6.3 MB SIG
Windows debug information files Windows 2a3911ed48b54ce0a25683c72154a5ca 25.8 MB SIG
Windows x86 MSI installer Windows 0d9db9c2316562c62e1e4c347b6f9430 19.3 MB SIG
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64 2477b4bd8e9a337705f7b5fda8b3b45f 19.8 MB SIG