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Python 2.7.4

Release Date: April 6, 2013

Note: A newer bugfix release, 2.7.5, is currently available. Its use is recommended over previous versions of 2.7.

Python 2.7.4 was released on April 6, 2013. This is a 2.7 series bugfix release. It includes hundreds of bugfixes over 2.7.3.

About the 2.7 release series

Among the features and improvements to Python 2.6 introduced in the 2.7 series are

  • An ordered dictionary type
  • New unittest features including test skipping, new assert methods, and test discovery
  • A much faster io module
  • Automatic numbering of fields in the str.format() method
  • Float repr improvements backported from 3.x
  • Tile support for Tkinter
  • A backport of the memoryview object from 3.x
  • Set literals
  • Set and dictionary comprehensions
  • Dictionary views
  • New syntax for nested with statements
  • The sysconfig module



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

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 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:

592603cfaf4490a980e93ecb92bde44a  14489063  Python-2.7.4.tgz
62704ea0f125923208d84ff0568f7d50  12146770  Python-2.7.4.tar.bz2
86909785aa1ff13b49d87737b75b5f54  10250644  Python-2.7.4.tar.xz
bb475605feffd85194902d5cc0ce62d6  18105410
a46a49e0f44caffd0084d032ab0447f8  17450050
7c44c508a1594a8be8145d172b056b90  16625664  python-2.7.4.amd64.msi
4610171c0dbc22712d597f808dcb8d37  16232448  python-2.7.4.msi
eff74952b544c77316982bb660eebbda   6003987  python274.chm
05314675faa1aa4d1b7ec0e8b21355a0  20397182  python-2.7.4-macosx10.3.dmg
bf586a6e7419bf1f222babbfe5177208  19985319  python-2.7.4-macosx10.6.dmg
[1](1, 2) 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 d706aa592de157379ca5d775f1432fed 62.3 MB SIG
XZ compressed source tarball Source release 86909785aa1ff13b49d87737b75b5f54 9.8 MB SIG
bzip2 compressed source tarball Source release 62704ea0f125923208d84ff0568f7d50 11.6 MB SIG
Mac OS X 32-bit i386/PPC installer macOS for Mac OS X 10.3 and later 05314675faa1aa4d1b7ec0e8b21355a0 19.5 MB SIG
Mac OS X 64-bit/32-bit installer macOS for Mac OS X 10.6 and later bf586a6e7419bf1f222babbfe5177208 19.1 MB SIG
Windows help file Windows eff74952b544c77316982bb660eebbda 5.7 MB SIG
Windows debug information files Windows bb475605feffd85194902d5cc0ce62d6 17.3 MB SIG
Windows x86 MSI installer Windows 4610171c0dbc22712d597f808dcb8d37 15.5 MB SIG
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64 7c44c508a1594a8be8145d172b056b90 15.9 MB SIG