Python 3.1.2

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:

• What's New in 3.1?
• What's new in Python 3000
• Python 3.1.2 Change Log
• Online Documentation
• Conversion tool for Python 2.x code: 2to3
• Report bugs at http://bugs.python.org.

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:

• Gzipped source tar ball (3.1.2) (sig)
• Bzipped source tar ball (3.1.2) (sig)
• Windows x86 MSI Installer (3.1.2) (sig)
• Windows X86-64 MSI Installer (3.1.2) [1] (sig)
• Mac Installer disk image (3.1.2) (sig)

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