Python 2.5.5

Python 2.5.5

We are pleased to announce the release of Python 2.5.5, a security fix release of Python 2.5, on January 31st, 2010.

Python 2.5.5 has been replaced by a newer bugfix release of Python. Please download Python 2.5.6 instead.

The last binary release of Python 2.5 was 2.5.4.

This is a source-only release that only includes security fixes. The last full bug-fix release of Python 2.5 was Python 2.5.4. User are encouraged to upgrade to the latest release of Python 2.7 (which is 2.7.2 at this point).

This releases fixes issues with the logging, tarfile and expat modules, and with thread-local variables. See the detailed release notes for more details.

See also the license.

Download the release

Source code

gzip-compressed source code: Python-2.5.5.tgz

bzip2-compressed source code: Python-2.5.5.tar.bz2, the source archive.

The bzip2-compressed version is considerably smaller, so get that one if your system has the appropriate tools to deal with it.

Unpack the archive with tar -zxvf Python-2.5.5.tgz (or bzcat Python-2.5.5.tar.bz2 | tar -xf -). Change to the Python-2.5.5 directory and run the "./configure", "make", "make install" commands to compile and install Python. The source archive is also suitable for Windows users who feel the need to build their own version.

What's New?

  • See the highlights of the Python 2.5 release.
  • Andrew Kuchling's What's New in Python 2.5 describes the most visible changes since Python 2.4 in more detail.
  • A detailed list of the changes in 2.5.5 can be found in the release notes, or the Misc/NEWS file in the source distribution.
  • For the full list of changes, you can poke around in Subversion.


The documentation has not been updated since the 2.5.4 release:

Files, MD5 checksums, signatures and sizes

abc02139ca38f4258e8e372f7da05c88 Python-2.5.5.tgz (11606370 bytes, signature)

1d00e2fb19418e486c30b850df625aa3 Python-2.5.5.tar.bz2 (9822917 bytes, signature)

The signatures above were generated with GnuPG using release manager Martin v. Löwis's public key which has a key id of 7D9DC8D2.

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.