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  • Release – Python 3.9.6

    Version: None

    Released: June 28, 2021

    This is the sixth maintenance release of Python 3.9 Note: The release you're looking at is Python 3.9.6, a 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. There's been …

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  • Release – Python 3.9.11

    Version: None

    Released: March 16, 2022

    This is the eleventh maintenance release of Python 3.9 Note: The release you're looking at is Python 3.9.11, a 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 …

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  • Release – Python 3.9.13

    Version: None

    Released: May 17, 2022

    This is the thirteenth and final regular maintenance release of Python 3.9 Note: The release you're looking at is Python 3.9.13, a 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. …

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  • Release – Python 3.12.0rc1

    Version: None

    Released: Aug. 6, 2023

    This is the first release candidate of Python 3.12.0 This release, 3.12.0rc1, 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 second candidate (and the last planned …

  • Release – Python 3.12.0rc2

    Version: None

    Released: Sept. 6, 2023

    This is the second release candidate of Python 3.12.0 This release, 3.12.0rc2, is the last release preview for Python 3.12. There will be no ABI changes from this point forward in the 3.12 series. The intent is for the final release of 3.12.0, scheduled for Monday, 2023-10-02, …

  • Release – Python 3.12.0rc3

    Version: None

    Released: Sept. 19, 2023

    This is the third release candidate of Python 3.12.0 This release, 3.12.0rc3, is the absolutely last release preview for Python 3.12. There will be no ABI changes from this point forward in the 3.12 series. The intent is for the final release of 3.12.0, scheduled for Monday, …

  • Release – Python 3.13.0b1

    Version: None

    Released: May 8, 2024

    This is a beta preview of Python 3.13 Python 3.13 is still in development. This release, 3.13.0b1, is the first of four beta release previews of 3.13. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to …

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  • Release – Python 3.14.0a5

    Version: None

    Released: Feb. 11, 2025

    Here comes the antepenultimate alpha. This is an early developer preview of Python 3.14 Major new features of the 3.14 series, compared to 3.13 Python 3.14 is still in development. This release, 3.14.0a5, is the fifth of seven planned alpha releases. Alpha releases are intended to …

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  • Release – Python 3.9.24

    Version: None

    Released: Oct. 9, 2025

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.24, a security bugfix release for the legacy 3.9 series. Python 3.14 is now the latest feature release series of Python 3. Get the latest release of 3.14.x here. Security content …

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  • Release – Python 3.10.19

    Version: None

    Released: Oct. 9, 2025

    This is a security release of Python 3.10 Note: The release you're looking at is Python 3.10.19, a security bugfix release for the legacy 3.10 series. Python 3.14 is now the latest feature release series of Python 3. Get the latest release of 3.14.x here. Security content …

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  • Release – Python 3.11.14

    Version: None

    Released: Oct. 9, 2025

    This is a security release of Python 3.11 Note: The release you're looking at is Python 3.11.14, a security bugfix release for the legacy 3.11 series. Python 3.14 is now the latest feature release series of Python 3. Get the latest release of 3.14.x here. Security content …

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  • Release – Python 3.13.12

    Version: None

    Released: Feb. 3, 2026

    This is the twelfth maintenance release of Python 3.13 Note: This is Python 3.13.12, a maintenance release for Python 3.13. Python 3.14 is now the latest feature release series of Python 3. Get the latest release of 3.14.x here. Python 3.13.12 is the twelfth maintenance release of …

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  • Comparing Option-Parsing Libraries

    Comparing Option-Parsing Libraries Comparing Option-Parsing Libraries NOTE: this page is present for historical purposes only. The getopt-sig is retired, and Optik was added to the Python standard library (as optparse) in Python 2.3. (It was checked in to Python's CVS tree in November 2002, and first released in July 2003.) Since I proposed Optik for the Python standard library, a number of other option-parsing libraries have come to light. I'm trying to evaluate them by ...

  • FSF response to the Python 2.1 license

    FSF response to the Python 2.1 license FSF response to the Python 2.1 license Today, I received the following email from Eben Moglen, the Free Software Foundation's attorney. (See also a postscript.) Subject: Re: Python 1.6.1 and GPL compatibility From: Eben Moglen <moglen@columbia.edu> To: Guido van Rossum <guido@digicool.com> Cc: "Bradley M. Kuhn" <bkuhn@gnu.org>, rms@gnu.org Date: Thu, 19 Apr 2001 07:44:11 -0400 (EDT) On Wednesday, 18 April 2001, Guido van Rossum w...

  • Bugs in Python 2.3.3

    Bugs in Python 2.3.3 <h3>Bugs in Python 2.3.3</h3> <ul> <li>IDLE now executes code in a separate process. To communicate between the main process and executing processes, IDLE opens a socket to 127.0.0.1 (the local machine). Some firewalls running on Windows machines interfere with this and can cause either silent failures or erroneous popup windows from the firewall. This problem only occurs if you run a firewall on the same machine as IDLE.</li> </ul> &...

  • Python 2.4.6 Release

    Python 2.4.6 Release Python 2.4.6 We are pleased to announce Python 2.4.6 (final), a bugfix release of Python 2.4, on Dec 19, 2008. Important: 2.4.6 is a source-only release. If you need a binary release of 2.4, use 2.4.4. If you need the fixes that are included in this release, use 2.6.1 or later. This release includes just a small number of fixes, primarily preventing crashes of the interpreter in certain boundary cases. This is the last planned release in the Python 2.4 series. We have ...

  • Python Software Foundation: Press Release 13-Feb-2003

    Python Software Foundation: Press Release 13-Feb-2003 Creators of Python Sponsor PyCon 2003, First Annual Developers Conference in March FREDERICKSBURG, VA, February 13, 2003 No, it's not a snake or the name of a British comedy group. Python is one of the most useful, compelling and intelligently designed programming platforms to have emerged into the computer industry mainstream in recent years. It is rapidly gaining wide acceptance and being deployed in major IT shops around the wor...

  • Python Software Foundation: Python Conference Committee Report (December 2003)

    Python Software Foundation: Python Conference Committee Report (December 2003) <center> <h3>The Python Software Foundation <br>Python Conference Committee Report </h3> </center> <p>December 2003 <p>David Ascher reports that he and Steve Holden had a phone call, and Ascher, Holden, Jeremy Hylton, Neal Norwitz, and Itamar Shtull-Trauring met on IRC. <h3>Deadlines</h3> <ul> System Message: ERROR/3 (<string>, line 15) Unexpected in...

  • Python Software Foundation: Minutes of Board of Directors Meeting (August 9, 2005)

    ...getting metro-wide wi-fi this fall, etc.). A 100-delegate conference would incur a $58000 loss. The break-even point (after projected sponsor donations) is 375 delegates. PyCon DC 2006 saw about 430 delegates. Payment for hotel-provided services is due after each conference. There are clauses for force majeure The PSF's liability insurance covers conferences. There are no other realistic alternatives at this point. There is a possibility of a 1%-7% rebate from the city on the hotel prices. The ...

  • Python Success Stories

    ...getting ever more attention, IronPython forms the flagship language for Microsoft's recent Dynamic Language Runtime (DLR), upon which future versions of Visual Basic will be based, and a healthy future seems assured. The success of IronPython is well deserved. It has proven to be a very capable implementation, with transparent mappings between Python and .NET types, and very few differences between it and CPython to catch out unwary developers. Pairing up the expressivity and power of the Python...

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