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  • Python Patterns - An Optimization Anecdote

    Python Patterns - An Optimization Anecdote Warning This page stays here for historical reasons and it may contain outdated or incorrect information. The other day, a friend asked me a seemingly simple question: what's the best way to convert a list of integers into a string, presuming that the integers are ASCII values. For instance, the list [97, 98, 99] should be converted to the string 'abc'. Let's assume we want to write a function to do this. The first version I came ...

  • Python Software Foundation: Press Release 20-Dec-2019

    Python Software Foundation: Press Release 20-Dec-2019 FOR IMMEDIATE RELEASE: 2019-12-20 PYTHON 2 SERIES TO BE RETIRED BY APRIL 2020 CPython core development community urging users to migrate to Python 3 as it will be the only version that will be updated for bugs and security vulnerabilities. The CPython core developer community is retiring the Python 2 series after nearly 20 years of development. The last major version 2.7 will be released in April 2020, and then all development will cease fo...

  • Python Success Stories

    Python Success Stories Background MayaVi is an open source scientific data visualization tool written entirely in Python. I started work on MayaVi in 2000. At that time, a few colleagues of mine needed to visualize their computational fluid dynamics (CFD) data but the only suitable tools available were commercial, closed source programs that were prohibitively expensive. We looked at some open source tools as alternatives. OpenDX had just been released to the public and at that time was har...

  • Release – Python 3.13.0a3

    Version: None

    Released: Jan. 17, 2024

    This is an early developer preview of Python 3.13 Major new features of the 3.13 series, compared to 3.12 Python 3.13 is still in development. This release, 3.13.0a3, is the third of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

  • Python Software Foundation: Minutes of Board of Directors Meeting (November 11, 2003)

    Python Software Foundation: Minutes of Board of Directors Meeting (November 11, 2003) The Python Software Foundation Minutes of Regular Meeting of the Board of Directors November 11, 2003 A regular meeting of the Python Software Foundation (the "PSF") Board of Directors was held over Internet Relay Chat at 18:00 GMT. Guido van Rossum, president of the Foundation and chairman of the Board, presided at the meeting. 1. Attendance The following members of the Board of Directors were presen...

  • Release – Python 2.2.2

    Version: None

    Released: Oct. 14, 2002

    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 and Python 2.5. If you need to remain with Python 2.2, there's a patch available from the …

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  • Release – Python 3.9.16

    Version: None

    Released: Dec. 6, 2022

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.16, a security bugfix release for the legacy 3.9 series. Python 3.11 is now the latest feature release series of Python 3. Get the latest release of 3.11.x here. Security content in this …

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  • Release – Python 3.13.0a4

    Version: None

    Released: Feb. 15, 2024

    This is an early developer preview of Python 3.13 Major new features of the 3.13 series, compared to 3.12 Python 3.13 is still in development. This release, 3.13.0a4, is the fourth of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

  • Python 2.1.2

    Python 2.1.2 Python 2.1.2 - a bugfix release for Python 2.1 Note: This is no longer the most current Python release. See Python 2.1.3 for a patch release and the download page for more recent releases. On January 16 2002, we're releasing Python 2.1.2 - a bugfix release of Python 2.1. We thank Anthony Baxter for being the releasemeister for this release (and we're using his timezone as an excuse to say it's January 16 :-). This is the final release of Python 2.1.2. While ...

  • Python 2.2.2

    ...interpreters (new releases initially appear in unstable). Macintosh users can find binaries and source on Jack Jansen's MacPython page. (MacOS X users who have a C compiler can also build from the source tarball below.) All others should download Python-2.2.2.tgz, the source tarball, and do the usual "gunzip; tar; configure; make" dance. What's New? This being a bug-fix release, there have been no exciting new features implemented since 2.2.1 -- just heaps of fixes. With ...

  • 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 …

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  • Python 2.5.4 Release

    Python 2.5.4 Release Python 2.5.4 We are pleased to announce the release of Python 2.5.4 (final), a bugfix release of Python 2.5, on December 23rd, 2008. Python 2.5.4 has been replaced by a newer bugfix release of Python. Please download Python 2.5.6 instead, unless you need to use the Windows and OS X binaries provided here. 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&...

  • Release – Python 2.6.9

    Version: None

    Released: Oct. 29, 2013

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  • Release – Python 3.10.7

    Version: None

    Released: Sept. 6, 2022

    This is the seventh maintenance release of Python 3.10 Python 3.10.7 is the newest major release of the Python programming language, and it contains many new features and optimizations. Major new features of the 3.10 series, compared to 3.9 Among the new major new features and changes so far: PEP …

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  • Release – Python 3.13.0a5

    Version: None

    Released: March 12, 2024

    This is an early developer preview of Python 3.13 Major new features of the 3.13 series, compared to 3.12 Python 3.13 is still in development. This release, 3.13.0a5, is the fifth of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

  • Release – Python 3.2.6

    Version: None

    Released: Oct. 12, 2014

    This is a security-fix source-only release. The last binary release was 3.2.5. With the 3.2.6 release, and five years after its first release, the Python 3.2 series is now officially retired. All official maintenance for Python 3.2, including security patches, has ended. For ongoing maintenance releases, please see the …

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  • Release – Python 3.13.0a6

    Version: None

    Released: April 9, 2024

    This is an early developer preview of Python 3.13 Major new features of the 3.13 series, compared to 3.12 Python 3.13 is still in development. This release, 3.13.0a6, is the sixth and last planned alpha release. Alpha releases are intended to make it easier to test the current state of …

  • Python for Mac OS X

    Python for Mac OS X Python for Mac OS X Python comes pre-installed on Mac OS X so it is easy to start using. However, to take advantage of the latest versions of Python, you will need to download and install newer versions alongside the system ones. The easiest way to do that is to install one of the binary installers for OS X from the Python Download page. Installers are available for the latest Python 3 and Python 2 releases that will work on all Macs that run Mac OS X 10.5 and later. Py...

  • Release – Python 3.14.0b1

    Version: None

    Released: May 7, 2025

    Only one day late, welcome to the first beta! This is a beta preview of Python 3.14 Python 3.14 is still in development. This release, 3.14.0b1, is the first 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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  • Python 2.0

    Python 2.0 Python 2.0 Note: This is no longer the most current Python release. See Python 2.0.1 for a patch release and the download page for more recent releases. The final version of Python 2.0 was released on October 16, 2000. Download What's new (overview) What's new (details) Post-release news For critical patches, a Python 2.0 specific FAQ, and other issues that have come up since the release, please go to the new Python 2.0 info area, a set of user-editabl...

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