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  • Release – Python 3.10.0a5

    Version: None

    Released: Feb. 2, 2021

    This is an early developer preview of Python 3.10 Major new features of the 3.10 series, compared to 3.9 Python 3.10 is still in development. This release, 3.10.0a5 is the fifth of seven planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

  • Release – Python 3.10.3

    Version: None

    Released: March 16, 2022

    This is the third maintenance release of Python 3.10 Python 3.10.3 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 3.12.0a7

    Version: None

    Released: April 4, 2023

    This is an early developer preview of Python 3.12. Major new features of the 3.12 series, compared to 3.11 Python 3.12 is still in development. This release, 3.12.0a7 is the seventh and final alpha release of 3.12. Alpha releases are intended to make it easier to test the current …

  • Release – Python 3.11.3

    Version: None

    Released: April 5, 2023

    This is the third maintenance release of Python 3.11 Python 3.11.3 is the newest major release of the Python programming language, and it contains many new features and optimizations. Major new features of the 3.11 series, compared to 3.10 Some of the new major new features and changes in Python …

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  • Release – Python 3.11.4

    Version: None

    Released: June 6, 2023

    This is the fourth maintenance release of Python 3.11 Python 3.11.4 is the newest major release of the Python programming language, and it contains many new features and optimizations. Major new features of the 3.11 series, compared to 3.10 Some of the new major new features and changes in Python …

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  • Release – Python 3.11.5

    Version: None

    Released: Aug. 24, 2023

    This is the fifth maintenance release of Python 3.11 Python 3.11.5 is the newest major release of the Python programming language, and it contains many new features and optimizations. Security content in this release gh-108310: Fixed an issue where instances of ssl.SSLSocket were vulnerable to a bypass of the …

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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 MATRIX-SIG] FAQ

    [PYTHON MATRIX-SIG] FAQ Here's my first step at creating a FAQ for this project. If anybodyelse wants to take it up, please feel free. This is going to be veryfree form, off the top of my head and unedited. Still, I anticipatethat it will be useful. Occaionally I will steal text entirely fromother people on the SIG without any attribution. I'll try to fix thislater. Written by Jim Hugunin (hugunin@mit.edu) on April 25, 1996. 1) What's Numerical Python? Here should really go...

  • Download Python 1.6.1 Source

    Download Python 1.6.1 Source Python 1.6.1 CNRI OPEN SOURCE GPL-COMPATIBLE LICENSE AGREEMENT IMPORTANT: PLEASE READ THE FOLLOWING AGREEMENT CAREFULLY. BY CLICKING ON "ACCEPT" WHERE INDICATED BELOW, OR BY COPYING, INSTALLING OR OTHERWISE USING PYTHON 1.6.1 SOFTWARE, YOU ARE DEEMED TO HAVE AGREED TO THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT. 1. This LICENSE AGREEMENT is between the Corporation for National Research Initiatives, having an office at 1895 Preston Whit...

  • Download Python 1.6.1 Windows Installer

    Download Python 1.6.1 Windows Installer Python 1.6.1 CNRI OPEN SOURCE GPL-COMPATIBLE LICENSE AGREEMENT IMPORTANT: PLEASE READ THE FOLLOWING AGREEMENT CAREFULLY. BY CLICKING ON "ACCEPT" WHERE INDICATED BELOW, OR BY COPYING, INSTALLING OR OTHERWISE USING PYTHON 1.6.1 SOFTWARE, YOU ARE DEEMED TO HAVE AGREED TO THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT. 1. This LICENSE AGREEMENT is between the Corporation for National Research Initiatives, having an office at 1895 P...

  • Mission

    Mission The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers. You can help fund the PSF by making a donation or becoming a member. The following is the official mission statement of the PSF: The Python Software Foundation (PSF) is a non-profit membership organization devoted to advancing open source technology related to the Py...

  • Python Software Foundation Press Releases

    Python Software Foundation Press Releases Because the PSF is a membership organization, PSF news is usually sent to a members mailing list, or posted on this web site. The PSF may also issue press releases from time to time, for news of general interest. In addition, some press releases issued by other organizations relevant to Python are listed below. Python Software Foundation December 20, 2019 - Python 2 Series To Be Retired By April 2020 March 9, 2005 - PyCon 2005: Keynote Speech From ...

  • Python Software Foundation: Minutes of Board of Directors Meeting (October 14, 2003)

    Python Software Foundation: Minutes of Board of Directors Meeting (October 14, 2003) The Python Software Foundation Minutes of Regular Meeting of the Board of Directors October 14, 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 present ...

  • Python Software Foundation: Minutes of Board of Directors Meeting (Januar 13, 2004)

    Python Software Foundation: Minutes of Board of Directors Meeting (Januar 13, 2004) The Python Software Foundation Minutes of Regular Meeting of the Board of Directors Januar 13, 2004 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 present at...

  • Python Software Foundation: Minutes of Board of Directors Meeting (December 14, 2004)

    Python Software Foundation: Minutes of Board of Directors Meeting (December 14, 2004) .. raw:: html The Python Software Foundation Minutes of a Regular Meeting of the Board of Directors December 14, 2004 .. sectnum:: A regular meeting of the Python Software Foundation (the "PSF") Board of Directors was held over Internet Relay Chat at 18:00 UTC, December 14, 2004. Stephan Deibel presided at the meeting. Attendance ========== The following members of the Board of Dir...

  • Python Software Foundation: Minutes of Board of Directors Meeting (April 12, 2005)

    Python Software Foundation: Minutes of Board of Directors Meeting (April 12, 2005) The Python Software Foundation Minutes of Regular Meeting of the Board of Directors April 12, 2005 A regular meeting of the Python Software Foundation (the "PSF") Board of Directors was held over Internet Relay Chat at 17:00 GMT. Stephan Deibel presided at the meeting. 1. Attendance The following members of the Board of Directors were present at the meeting: David Ascher, Stephan Deibel, Tim Peters, Andr...

  • 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 final release. The …

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  • Job - Senior Full Stack Engineer

    Location: London United Kingdom

    Telecommuting: Yes

    We’re looking for a Senior Full Stack Engineer to join our Member Experience squad — a collaborative, cross-functional team dedicated to improving the experience for Lyst members (users who create an account). You’ll get to work across user personalisation, our stock and price alerts, as well as the optimisation and …

  • 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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