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 3.1.2

Warning: Python 3.1.2 reached end-of-life on 2012-04-09. It is no longer supported and does not receive security updates. We recommend upgrading to the latest Python release.
Note: Python 3.1.2 has been superseded by Python 3.1.5.

Release date: March 20, 2010

Note: It is recommended that you use the latest bug fix release of the 3.1 series, 3.1.4.

Python 3.1.2 was released on March 21st, 2010.

The Python 3.1 version series is a continuation of the work started by Python 3.0, the new backwards-incompatible series of Python. Improvements in this release include:

  • An ordered dictionary type
  • Various optimizations to the int type
  • New unittest features including test skipping and new assert methods.
  • A much faster io module
  • Tile support for Tkinter
  • A pure Python reference implementation of the import statement
  • New syntax for nested with statements

See these resources for further information:

Help fund Python and its community by donating to the Python Software Foundation.

Download

This is a production release. Please report any bugs you may encounter to http://bugs.python.org.

We currently support these formats for download:

The source tarballs are signed with Benjamin Peterson's key (fingerprint: 12EF 3DC3 8047 DA38 2D18 A5B9 99CD EA9D A413 5B38). The Windows installers are signed with Martin von Löwis' public key which has a key id of 7D9DC8D2. The Mac disk image was signed by Ronald Oussoren's public key which has a key id of E6DF025C. The public keys are located on the download page.

MD5 checksums and sizes of the released files:

08d01c468989d1f2cc560c23f8e6a7ea  11661773  Python-3.1.2.tgz
45350b51b58a46b029fb06c61257e350   9719769  Python-3.1.2.tar.bz2
a50d1fe2648783126c7a70654a08b755  14369280  python-3.1.2.amd64.msi
098269f6057916821e41e82e7a7be227  14098432  python-3.1.2.msi
597ba520c9c989f23464e0bf534db389  17418524  python-3.1.2-macosx10.3-2010-03-24.dmg
[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).

Full Changelog

Files

Version Operating system Description File size GPG MD5 checksum
Gzipped source tarball Source release 48.2 MB SIG 12c26d08d63dd636073466bb84fa8041
bzip2 compressed source tarball Source release 9.3 MB SIG 45350b51b58a46b029fb06c61257e350
Mac OS X installer macOS 16.6 MB 597ba520c9c989f23464e0bf534db389
Windows x86 MSI installer Windows 13.4 MB SIG 098269f6057916821e41e82e7a7be227
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64 13.7 MB SIG a50d1fe2648783126c7a70654a08b755