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  • Python 2.4.1

    ...number of Windows-specific extensions to Python, including COM support and the Pythonwin IDE. Bob Ippolito has created an installer for Mac OS X 10.3 and later - you can fetch this from his site, or directly from here. All others should download either Python-2.4.1.tgz or Python-2.4.1.tar.bz2, the source archive. The tar.bz2 is considerably smaller, so get that one if your system has the appropriate tools to deal with it. Unpack it with tar -zxvf Python-2.4.1.tgz (or bzcat Python-2.4.1.tar.b...

  • Python 2.4.2 Release

    ...number of Windows-specific extensions to Python, including COM support and the Pythonwin IDE. RPMs for Fedora Core 3 (and similar) are available, see the 2.4.2 RPMs page All others should download either python-2.4.2.tgz or python-2.4.2.tar.bz2, the source archive. The tar.bz2 is considerably smaller, so get that one if your system has the appropriate tools to deal with it. Unpack it with tar -zxvf Python-2.4.2.tgz (or bzcat Python-2.4.2.tar.bz2 | tar -xf -). Change to the Python-2.4.2 direc...

  • Python 2.7.3 Release

    ...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 See these resources for further information: What's new in 2.7? Change log for this release. Online Documentation Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a pro...

  • Python 2.7.8 Release

    ...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 Binary installer support for OS X 10.4 and 10.3.9 to be discontinued Python 2.7.8 is the last release for which binary installers will be released on python.org that support Mac OS X 10.3.9 (Panther) and 10.4.x (T...

  • Release – Python 2.5.2

    Version: None

    Released: Feb. 21, 2008

    Python 2.5.2 was released on February 21st, 2008. This is the second bugfix release of Python 2.5. Python 2.5 is now in bugfix-only mode; no new features are being added. According to the release notes, over 100 bugs and patches have been addressed since Python 2.5.1, many of …

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  • Release – Python 2.5.0

    Version: None

    Released: Sept. 19, 2006

    Python 2.5 was released on September 19th 2006. There's a bunch of places you can look for more information on what's new in this release -- see the "What's New" section further down this page. This is a final release, and should be suitable for production use. …

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  • Release – Python 2.5.3

    Version: None

    Released: Dec. 19, 2008

    Python 2.5.3 was released on December 19th, 2008. This is the last bugfix release of Python 2.5. Python 2.5 is now in bugfix-only mode; no new features are being added. According to the release notes, about 80 bugs and patches have been addressed since Python 2.5.2, many of …

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  • Release – Python 2.5.4

    Version: None

    Released: Dec. 23, 2008

    This is the last bugfix release of Python 2.5. Future releases of Python 2.5 will only contain security patches; no new features are being added, and no "regular" bugs will be fixed anymore. According to the release notes, about 80 bugs and patches have been addressed since Python 2.5.2, …

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  • Release – Python 3.14.0rc1

    Version: None

    Released: July 22, 2025

    It's the first 3.14 release candidate! https://www.python.org/downloads/release/python-3140rc1/ This is the first release candidate of Python 3.14 This release, 3.14.0rc1, is the penultimate release preview. Entering the release candidate phase, only reviewed code changes which are clear bug fixes are allowed between this release candidate and the …

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  • Python Success Stories

    ...number of days into the future for which the forecasts were predicting. In its first year, 2003, the system only gathered forecasts for 20 U.S. cities, or about 250,000 individual forecasts, so most of the data output was based on the raw scoring data. The aggregation engine was added once the system was scaled up to 800 cities, increasing the data stream by almost 4000%. In the first half of 2004, the system has already scored over 4 million forecasts, all collected, parsed, and displayed on th...

  • Python Success Stories

    ...number of discrete components: The user interface, the SECS communication modules, the data collection interface, and so forth. The activities of each of these components were coordinated by a sequencing engine in each workstation. At that time, the components and the sequencing engine written were in C and high-level activities were sequenced in a simple proprietary scripting language. This approach was used to develop Tool Application Programs (TAPs) for about 6 years. It was well understood b...

  • A Journey to Python

    ...number-theoretical functions, etc., on top of the LGPL-licensed GMP library (some of those advanced functionalities are precious to my ongoing work in bridge simulation and analysis, though by now my ongoing work maintaining and developing gmpy is mostly something I see as a contribution to the community). I did complete the Nutshell, wrote many Python articles for various magazines, both Italian and US ones, and went on a binge doing presentations at all sorts of conference, such as PythonUK, E...

  • Debugging Reference Count Problems

    Debugging Reference Count Problems Warning This page stays here for historical reasons and it may contain outdated or incorrect information. Debugging Reference Count Problems From: Guido van Rossum <guido@CNRI.Reston.VA.US> To: python-list@cwi.nl Date: Wed, 27 May 1998 11:09:40 -0400 Mike Fletcher wrote a number of posts about debugging C code that bombs, probably because of reference count problems. His approach to debugging this problem seems typical, but I thin...

  • Download Python for other platforms

    ...number of specialized and/or older platforms, listed below in alphabetical order. Note that these ports often lag well behind the latest Python release. Python for AIX AIX binary packages for Python are available from IBM AIX Toolbox in RPM format. They can be installed using dnf package manager. Visit the Get Started page for more details. Python for HP-UX You can purchase ActivePython (commercial and community versions, including scientific computing modules, not open source) Python fo...

  • Python 2.5 Release

    ...number of Windows-specific extensions to Python, including COM support and the Pythonwin IDE. Users of Mac OS X 10.3 and later can install a universal binary (suitable for both PowerPC and Intel machines) from python-2.5-macosx.dmg . Download to the desktop and open the .dmg file to install. All others should download either python-2.5.tgz or python-2.5.tar.bz2, the source archive. The tar.bz2 is considerably smaller, so get that one if your system has the appropriate tools to deal with it....

  • Python 2.5.2 Release

    ...number of Windows-specific extensions to Python, including COM support and the Pythonwin IDE. MacOS X For MacOS X 10.3 and later: python-2.5.2-macosx.dmg. This is a Universal installer. The Universal OS X image contains an installer for python 2.5.2 that works on Mac OS X 10.3.9 and later, on both PPC and Intel Macs. The compiled libraries include both bsddb and readline. Other platforms gzip-compressed source code: Python-2.5.2.tgz bzip2-compressed source code: Python-2.5.2.tar.bz2, the s...

  • Python 2.5.3 Release

    ...number of Windows-specific extensions to Python, including COM support and the Pythonwin IDE. MacOS X For MacOS X 10.3 and later: python-2.5.3-macosx.dmg. This is a Universal installer. The Universal OS X image contains an installer for python 2.5.3 that works on Mac OS X 10.3.9 and later, on both PPC and Intel Macs. The compiled libraries include both bsddb and readline. Other platforms gzip-compressed source code: Python-2.5.3.tgz bzip2-compressed source code: Python-2.5.3.tar.bz2, the s...

  • Python 2.5.4 Release

    ...number of Windows-specific extensions to Python, including COM support and the Pythonwin IDE. MacOS X For MacOS X 10.3 and later: python-2.5.4-macosx.dmg. This is a Universal installer. The Universal OS X image contains an installer for python 2.5.4 that works on Mac OS X 10.3.9 and later, on both PPC and Intel Macs. The compiled libraries include both bsddb and readline. Other platforms gzip-compressed source code: Python-2.5.4.tgz bzip2-compressed source code: Python-2.5.4.tar.bz2, the s...

  • PSF Sponsorship Prospectus

    ...Numbers 23B requests/month 5.3B requests/month 757M requests/day Core Development Support The PSF funds an annual gathering of Python core developers to target improvements to CPython. In 2019, the CPython sprint received $25,000 in support from the PSF and in 2020, $6,000 USD for an online sprint. The PSF is also financially supporting CPython through a complete migration to GitHub and, in 2019, allocated $19,000 USD to assist CPython with Py...

  • Linux RPMs for Python 2.3.4

    ...number. <p /> To invoke the interpreter with these packages, you will explicitly have to run "python2.3". Note that all Python RPMs provided by Python.org and Red Hat provide a "/usr/bin/python2.3" (or similar, with major/minor number), even if they also provide "/usr/bin/python". So, yes, it should be safe. <p /> Note that you may need to build and install a second copy of any packages which you need access to with the supplemental version of Python. ...

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