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  • Release – Python 2.4.2

    Version: None

    Released: Sept. 27, 2005

    We are pleased to announce the release of Python 2.4.2 (final), a bugfix release, on September 28, 2005. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is …

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  • Release – Python 3.14.0b3

    Version: None

    Released: June 17, 2025

    It's 3.14 beta 3! https://www.python.org/downloads/release/python-3140b3/ This is a beta preview of Python 3.14 Python 3.14 is still in development. This release, 3.14.0b3, is the third of four planned beta releases. Beta release previews are intended to give the wider community the opportunity to test new features …

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  • Release – Python 3.14.0

    Version: None

    Released: Oct. 7, 2025

    This is the stable release of Python 3.14.0 Python 3.14.0 is the newest major release of the Python programming language, and it contains many new features and optimisations compared to Python 3.13. Major new features of the 3.14 series, compared to 3.13 Some of the major …

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  • Release – Python 3.14.2

    Version: None

    Released: Dec. 5, 2025

    This is the second maintenance release of Python 3.14 Python 3.14.2 is the second maintenance release of 3.14, containing 18 bugfixes, build improvements and documentation changes since 3.14.1. This is an expedited release to fix the following regressions: gh-142206: Exceptions in multiprocessing in …

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  • Python Success Stories

    Python Success Stories Introduction Development InfoStructure (devIS) is a small consulting firm in Arlington, Virginia that is well known for its work in the eGovernment sector. This includes development of small, medium, and large-scale systems. devIS EZ Reusable Objects (EZRO) is a content management system which can be used for many different kinds of websites, including traditional information presentation sites such as http://www.devis.com/, portals like http://www.milspouse.org/, train...

  • Python 2.4.1

    Python 2.4.1 Python 2.4.1 Python 2.4.1 has been replaced by a newer bugfix release. Please see the releases page to select a more recent release. We are pleased to announce the release of Python 2.4.1 (final) on March 30, 2005. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 Note: there's a security fix for SimpleXMLR...

  • Python 2.4.2 Release

    Python 2.4.2 Release Python 2.4.2 Python 2.4.2 has been replaced by a newer bugfix release of Python. Please see the releases page to select a more recent release. We are pleased to announce the release of Python 2.4.2 (final), a bugfix release, on September 28, 2005. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 Pyt...

  • Notes

    ...generator; and jumpahead(n), for quickly forcing the internal state to be the same as if n calls to random() had been made. The latter is particularly useful for multi- threaded programs, creating one instance of the random.Random() class for each thread, then using .jumpahead() to force each instance to use a non-overlapping segment of the full period. random.py's seed() function is new. For bit-for-bit compatibility with prior releases, use the whseed function instead. The new seed function...

  • Computer Programming for Everybody

    ...generator that creates interfaces between scripting languages and systems languages like C or C++. Why Teach a "General" Programming Language? It is well understood that there is something of a dichotomy between "general" programming languages on the one hand and "domain-specific" languages on the other. For this discussion, we use the term "general" in a broad and loose sense, to include functional programming languages and possibly even logic programming languages, to the extent to wh...

  • 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 2.5.1

    Version: None

    Released: April 19, 2007

    Python 2.5.1 was released on April 18th, 2007. This is the first 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 150 bugs and patches have been squished since Python 2.5, including a …

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  • Release – Python 2.4.4

    Version: None

    Released: Oct. 18, 2006

    Python 2.4 is now in bugfix-only mode; no new features are being added. At least 80 bugs have been squished since Python 2.4.3, including a number of bugs and potential bugs found by with the Coverity and Klocwork static analysis tools. We'd like to offer our thanks to both …

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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

    Python Success Stories Introduction ForecastWatch.com, a service of Intellovations, is in the business of rating the accuracy of weather reports from companies such as Accuweather, MyForecast.com, and The Weather Channel. Over 36,000 weather forecasts are collected every day for over 800 U.S. cities, and later compared with actual climatological data. These comparisons are used by meteorologists to improve their weather forecasts, and to compare their forecasts with others. They are also used...

  • Python Success Stories

    Python Success Stories Introduction The GravityZoo Company, founded in late 2005 is a pioneering innovator of Software as a Service (SaaS) enabling technology, Ubiquitous Computing and Ambient Intelligence Systems. The core technology of the Company is its framework. This GravityZoo Framework is designed to develop and host any kind of application while simultaneously making these applications available at anytime, anyplace. The latter on any type of client device, be it a PC, a mobile client...

  • 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...

  • Python 2.4.3 Release

    Python 2.4.3 Release Python 2.4.3 Python 2.4.3 has been replaced by a newer bugfix release of Python. Please see the releases page to select a more recent release. Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 We are pleased to announce the release of Python 2.4.3 (final), a bugfix release of Python 2.4, on March 29,...

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