Release Date: June 26, 2009
Python 3.1 has been superseded by 3.1.1. You can download 3.1.1.
Python 3.1 final was released on June 27th, 2009.
Python 3.1 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?
- Python 3.1 change log.
- Online Documentation
- Report bugs at http://bugs.python.org.
- Help fund Python and its community.
This is a production release.
We currently support these formats for download:
- Gzipped source tar ball (3.1) (sig)
- Bzipped source tar ball (3.1) (sig)
- Windows x86 MSI Installer (3.1) (sig)
- Windows X86-64 MSI Installer (3.1)  (sig)
- Mac Installer disk image (3.1) (sig)
The source tarballs and Mac installer 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 public keys are located on the download page.
SHA1 checksums and sizes of the released files:
8590b685654367e3eba70dc00df7e45e88c21da4 11359455 python-3.1.tgz f8c610f47e6c9420314e48871b9c697a93ed2e42 9510460 python-3.1.tar.bz2 2a0dc4829e5d3842d363a16594e077b8d7e2df88 14094336 python-3.1.amd64.msi 4b499d3e4ba47f8c7f814ef379cb24c89f9b43c1 13814272 python-3.1.msi 02ceddc7d2b65b7d378ca9f333e43f9b0bec7bb1 17119035 python-3.1.dmg
|||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).|
|Version||Operating System||Description||MD5 Sum||File Size||GPG|
|bzip2 compressed source tarball||Source release||f64437a24d39f1917aa1878cc70621f6||9510460||SIG|
|Gzipped source tarball||Source release||26d10a8f591886af67b2b19e155e8daf||49950720||SIG|
|Mac OS X installer||macOS||fd1547fefabd7f73f9a038b812fd1017||17119035||SIG|
|Windows x86-64 MSI installer||Windows||for AMD64/EM64T/x64||9c90c9bbdd4bab5124802a9b43b95f3b||14094336||SIG|
|Windows x86 MSI installer||Windows||85b0ce2e6dc5334d856a3fba534010b3||13814272||SIG|