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  • Release – Python 3.6.6

    Version: None

    Released: June 27, 2018

    Note: The release you are looking at is Python 3.6.6, a bugfix release for the legacy 3.6 series which has now reached end-of-life and is no longer supported. See the downloads page for currently supported versions of Python. The final source-only security fix release for 3.6 was 3.6.15 and …

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  • Release – Python 3.6.7

    Version: None

    Released: Oct. 20, 2018

    Note: The release you are looking at is Python 3.6.7, a bugfix release for the legacy 3.6 series which has now reached end-of-life and is no longer supported. See the downloads page for currently supported versions of Python. The final source-only security fix release for 3.6 was 3.6.15 and …

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  • Release – Python 3.6.8rc1

    Version: None

    Released: Dec. 11, 2018

    Python 3.6.8rc1 is a release candidate preview of the eighth and last maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. Note Python 3.7 is now released and is the latest feature release of Python 3. Get the latest release of …

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  • Release – Python 3.6.8

    Version: None

    Released: Dec. 24, 2018

    Note: The release you are looking at is Python 3.6.8, the final bugfix release for the legacy 3.6 series which has now reached end-of-life and is no longer supported. See the downloads page for currently supported versions of Python. The final source-only security fix release for 3.6 was 3.6.15 …

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  • Release – Python 3.5.9

    Version: None

    Released: Nov. 2, 2019

    Python 3.5.9 Python 3.5 has reached end-of-life. Python 3.5.10, the final release of the 3.5 series, is available here. Python 3.5.9 was released on November 1st, 2019. There were no new changes in version 3.5.9; 3.5.9 was released only because of a CDN caching problem, …

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  • Release – Python 3.9.20

    Version: None

    Released: Sept. 6, 2024

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.20, a security bugfix release for the legacy 3.9 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.8.20

    Version: None

    Released: Sept. 6, 2024

    This is a security release of Python 3.8 Note: The release you're looking at is Python 3.8.20, a security bugfix release for the legacy 3.8 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.10.15

    Version: None

    Released: Sept. 7, 2024

    This is a security release of Python 3.10 Note: The release you're looking at is Python 3.10.15, a security bugfix release for the legacy 3.10 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.11.10

    Version: None

    Released: Sept. 7, 2024

    This is a security release of Python 3.11 Note: The release you're looking at is Python 3.11.10, a security bugfix release for the legacy 3.11 series. Python 3.12 is now the latest feature release series of Python 3. Get the latest release of 3.12.x here. Security content …

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  • Release – Python 3.13.5

    Version: None

    Released: June 11, 2025

    This is the fifth maintenance release of Python 3.13 Python 3.13 is the newest major release of the Python programming language, and it contains many new features and optimizations compared to Python 3.12. 3.13.5 is the fifth maintenance release of 3.13. 3.13.5 is an expedited release to fix …

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  • Python Success Stories

    Python Success Stories Background The Molecular Modeling Toolkit (MMTK) is a open source Python library for molecular modeling and simulation with a focus on biomolecular systems, written in a mixture of Python and C. It provides standard techniques such as Molecular Dynamics or normal mode calculations in a ready-to-use form, but also provides a basis of low-level operations on top of which new techniques can easily be implemented. I started developing MMTK in 1996. I had some experience wit...

  • Bugs in Python 2.3.1

    Bugs in Python 2.3.1 <h3>Bugs in Python 2.3.1</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> <li>The...

  • Python 2.3.2

    Python 2.3.2 Python 2.3.2 Note: See Python 2.3.5 for a patch release release which supersedes earlier releases of 2.3. 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 2.3, there's a patch available from the security advisory page. Important: ...

  • Python 2.3.3

    Python 2.3.3 Python 2.3.3 Note: See Python 2.3.5 for a patch release release which supersedes earlier releases of 2.3. 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 2.3, there's a patch available from the security advisory page. Important: ...

  • Python 2.3.4

    Python 2.3.4 Python 2.3.4 Note: See Python 2.3.5 for a patch release which supersedes earlier releases of 2.3. 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 2.3, there's a patch available from the security advisory page. Important: 2.3.5 in...

  • Python 2.3.6 Release

    Python 2.3.6 Release Python 2.3.6 We are pleased to announce the release of Python 2.3.6 (FINAL), a bugfix release of Python 2.3, on November 1, 2006. Important: 2.3.6 includes a security fix (PSF-2006-001) for the repr() of unicode strings in wide unicode builds (UCS-4) Python 2.3 is now well and truly in bugfix-only mode; no new features are being added, and only security critical bugs have been fixed. There are 3 bugs fixed in this release - a problem with the email package's handling of...

  • Python 2.3.7 Release

    Python 2.3.7 Release Python 2.3.7 We are pleased to announce Python 2.3.7 (final), a bugfix release of Python 2.3, on March 11, 2008. Important: 2.3.7 is a source-only release. If you need a binary release of 2.3, use 2.3.5. If you need the fixes that are included in this release, use 2.5.2 or later. Python 2.3 is now well and truly in bugfix-only mode; no new features are being added, and only security critical bugs have been fixed. This release addresses a number of cases interpreter migh...

  • Python 2.4.5 Release

    Python 2.4.5 Release Python 2.4.5 We are pleased to announce Python 2.4.5 (final), a bugfix release of Python 2.4, on March 11, 2008. Important: 2.4.5 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 2.5.2 or later. Python 2.4 is now in security-fix-only mode. No new features are being added, and bugs are not fixed anymore unless they affect the stability and security of the interpreter, or of Python appli...

  • Release – Python 2.3.5

    Version: None

    Released: Feb. 8, 2005

    Python 2.3.5 (final) on Feb 8th, 2005. This is a bug-fix release for Python 2.3. There have been around 50 bugs fixed since 2.3.4 - in the Python interpreter, the standard library and also in the build process - see the release notes for details. Important: This release …

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  • Release – Python 3.5.10rc1

    Version: None

    Released: Aug. 22, 2020

    Python 3.5.10rc1 Python 3.5 has reached end-of-life. Python 3.5.10, the final release of the 3.5 series, is available here. Python 3.5.10rc1 was released on August 21st, 2020. Python 3.5 has now entered "security fixes only" mode, and as such the only changes since Python 3.5.4 …

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