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  • Release – Python 3.1.1

    Version: None

    Released: Aug. 17, 2009

    Python 3.1.1 has been superseded by 3.1.2. You can download 3.1.2. Python 3.1.1 was released on August 17th, 2009. Python 3.1 is a continuation of the work started by Python 3.0, the new backwards-incompatible series of Python. Improvements in this release include: An …

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  • Release – Python 3.1.2

    Version: None

    Released: March 20, 2010

    Note: It is recommended that you use the latest bug fix release of the 3.1 series, 3.1.4. Python 3.1.2 was released on March 21st, 2010. The Python 3.1 version series is a continuation of the work started by Python 3.0, the new backwards-incompatible series of …

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  • Release – Python 3.5.0rc1

    Version: None

    Released: Aug. 11, 2015

    Python 3.5.0rc1 Python 3.5 has reached end-of-life. Python 3.5.10, the final release of the 3.5 series, is available here. Python 3.5.0rc1 was released on August 10th, 2015. Major new features of the 3.5 series, compared to 3.4 Among the new major new features …

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  • Python 3.1.1 Release

    ...Software Foundation. Download This is a production release. We currently support these formats for download: Gzipped source tar ball (3.1.1) (sig) Bzipped source tar ball (3.1.1) (sig) Windows x86 MSI Installer (3.1.1) (sig) Windows X86-64 MSI Installer (3.1.1) [1] (sig) Mac Installer disk image (3.1.1) (sig) The source tarballs are signed with Benjamin Peterson's key (fingerprint: 12EF 3DC3 8047 DA38 2D18 A5B9 99CD EA9D A413 5B38). The Windows installers are signed with Martin von Löwis' pu...

  • Python 3.1.2 Release

    ...Software Foundation. Download This is a production release. Please report any bugs you may encounter to http://bugs.python.org. We currently support these formats for download: Gzipped source tar ball (3.1.2) (sig) Bzipped source tar ball (3.1.2) (sig) Windows x86 MSI Installer (3.1.2) (sig) Windows X86-64 MSI Installer (3.1.2) [1] (sig) Mac Installer disk image (3.1.2) (sig) The source tarballs are signed with Benjamin Peterson's key (fingerprint: 12EF 3DC3 8047 DA38 2D18 A5B9 99CD EA9D A4...

  • Release – Python 3.14.0b4

    Version: None

    Released: July 8, 2025

    It's the final 3.14 beta! https://www.python.org/downloads/release/python-3140b4/ This is a beta preview of Python 3.14 Python 3.14 is still in development. This release, 3.14.0b4, is the last of four planned beta releases. Beta release previews are intended to give the wider community the opportunity to test new …

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  • PSF Membership Types & FAQ

    PSF Membership Types & FAQ 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 the international community of Python programmers. —from the Mission Statement page What does it mean to be a member of the PSF? What membership classes are there? Who is allowed to vote? Why am I a Basic Member even though I’m a Supporting/Contributing/Fellow Member? How does a person become a PS...

  • Notes

    ...Software Foundation changed the license under which Python is released, to remove Python version numbers. There were no other changes to the license. So, for example, wherever the license for Python 2.3 said "Python 2.3", the new license says "Python". The intent is to make it possible to refer to the PSF license in a more durable way. For example, some people say they're confused by that the Open Source Initiative's entry for the Python Software Foundation License: http...

  • Notes

    ...testing framework by Steve Purcell (PyUNIT, inspired by JUnit), is now part of the standard library. You now have a choice of two testing frameworks: unittest requires you to write testcases as separate code, doctest gathers them from docstrings. Both approaches have their advantages and disadvantages. A new module Tix was added, which wraps the Tix extension library for Tk. With that module, it is not necessary to statically link Tix with _tkinter, since Tix will be loaded with Tcl's "p...

  • Python Success Stories

    ...software for almost 20 years. He has worked extensively in medical informatics and as a software consultant. Before finding Python, his projects included one of the first Macintosh-based multimedia authoring systems and an early CORBA implementation. Stephan is now CEO and co-founder of Archaeopteryx Software, Inc, makers of Wing IDE. John P. Ehresman has been programming for more than ten years in medical informatics and as a software consultant. He has been using Python since version 1.2 and ...

  • Release – Python 3.14.0b2

    Version: None

    Released: May 26, 2025

    Here's the second 3.14 beta. https://www.python.org/downloads/release/python-3140b2/ This is a beta preview of Python 3.14 Python 3.14 is still in development. This release, 3.14.0b2, is the first of four planned beta releases. Beta release previews are intended to give the wider community the opportunity to test new …

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  • PSF Board Resolutions

    ...Software Foundation vote Diana Clarke as chair of the Python Software Foundation. Approved 10-0-0 on June 14, 2016 RESOLVED, that the Python Software Foundation vote Van Lindberg and Naomi Ceder as vice chairs of the Python Software Foundation. Approved 10-0-0 on June 14, 2016 RESOLVED, that the Python Software Foundation appoint Lorena Mesa and Kushal Das as Communications Officers of the Python Software Foundation. Approved 10-0-0 on June 14, 2016 RESOLVED, that the Python Software Foundati...

  • Glue It All Together With Python

    ...Software Architecture in Monterey, California, January 6-8, 1998. Introduction Python is an advanced scripting language that is being used successfully to glue together large software components. It spans multiple platforms, middleware products, and application domains. Python is an object-oriented language with high-level data structures, dynamic typing, and dynamic binding. Python has been around since 1991, and has a very active user community. For more information, see th...

  • Python Software Foundation: Minutes of Board of Directors Meeting, January 10, 2006

    ...Software Foundation: Minutes of Board of Directors Meeting, January 10, 2006 The Python Software Foundation Minutes of a Regular Meeting of the Board of Directors January 10, 2006 A regular meeting of the Python Software Foundation ("PSF") Board of Directors was held over Internet Relay Chat beginning at 18:00 UTC, 10 January 2006. Stephan Deibel presided at the meeting. 1   Attendance The following members of the Board of Directors were present at the meeting: S...

  • Python 2.4.1 - Release Notes

    ...Software Foundation changed the license under which Python is released, to remove Python version numbers. There were no other changes to the license. So, for example, wherever the license for Python 2.3 said "Python 2.3", the new license says "Python". The intent is to make it possible to refer to the PSF license in a more durable way. For example, some people say they're confused by that the Open Source Initiative's entry for the Python Software Foundation License: http...

  • Python Software Foundation: Minutes of Board of Directors Meeting, November 8, 2005

    ...Software Foundation: Minutes of Board of Directors Meeting, November 8, 2005 The Python Software Foundation Minutes of a Regular Meeting of the Board of Directors November 8, 2005 A regular meeting of the Python Software Foundation ("PSF") Board of Directors was held over Internet Relay Chat beginning at 18:08 UTC, 8 November 2005. Stephan Deibel presided at the meeting. 1   Attendance The following members of the Board of Directors were present at the meeting: T...

  • Executive Summary: The Python Software Foundation

    ...Software Foundation Written by Stephan Deibel, Chairman of the Board, Python Software Foundation. A version of this article was originally published in The Python Papers volume 2, issue 4. Last updated March 2008 Introduction “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 the international community of Python programmers.” The Python Software Foundation (PSF) is the non-profit lega...

  • Archive 2018: Executive Summary: The Python Software Foundation

    ...Software Foundation Written by Stephan Deibel, Chairman of the Board, Python Software Foundation. A version of this article was originally published in The Python Papers volume 2, issue 4. Last updated March 2008 Introduction “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 the international community of Python programmers.” The Python Software Foundation (PSF) is the non-profit lega...

  • Python Success Stories

    ...software companies. He now spends most of his time consulting as architect and technical lead for large development projects, and has been extensively involved in planning and coordinating the 2002 and 2003 Python UK conferences. Marc-Andre Lemburg (mal@siena-tech.com) is the Chief Technical Officer (CTO) of Siena Technology. He holds a degree in mathematics from the University of Duesseldorf. Marc-Andre has been working with Python since 1993, is a Python Core Developer, board member of the...

  • Release – Python 3.14.0rc2

    Version: None

    Released: Aug. 14, 2025

    It's the final 🪄 penultimate 🪄 3.14 release candidate! Note: rc2 was originally planned for 2025-08-26, but we fixed a bug that required bumping the magic number stored in Python bytecode (.pyc) files. This means .pyc files created for rc1 cannot be used for rc2, and they'll …

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