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  • 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 …

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  • Release – Python 3.14.5rc1

    Version: None

    Released: May 4, 2026

    Python 3.14.5rc1 is a release candidate for the fifth maintenance release of 3.14, containing around 113 bugfixes, build improvements and documentation changes since 3.14.4. Garbage collector Notably, the garbage collector (GC) has changed in Python 3.14.5rc1. The incremental garbage collector shipped in Python 3.14.0-3.14.4 has been reverted …

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  • Python 3.4.0 Release Candidate 1 Release

    ...hash algorithm for Python strings and binary data PEP 3154, a new and improved protocol for pickled objects PEP 3156, a new "asyncio" module, a new framework for asynchronous I/O More resources Online Documentation 3.4 Release Schedule Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a preview release, and its use is not recommended in production settings. We currently support these formats for download: XZ compressed source tar ball ...

  • Python 3.4.0 Release Candidate 2 Release

    ...hash algorithm for Python strings and binary data PEP 3154, a new and improved protocol for pickled objects PEP 3156, a new "asyncio" module, a new framework for asynchronous I/O More resources Online Documentation 3.4 Release Schedule Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a preview release, and its use is not recommended in production settings. We currently support these formats for download: XZ compressed source tar ball ...

  • Release – Python 3.3.4

    Version: None

    Released: Feb. 9, 2014

    fixes several security and a lot of overall bug fixes found in Python 3.3.3. This release fully supports OS X 10.9 Mavericks. In particular, this release fixes an issue that could cause previous versions of Python to crash when typing in interactive mode on OS X 10.9. …

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  • Release – Python 3.3.1

    Version: None

    Released: April 6, 2013

    release. It includes hundreds of bugfixes over 3.3.0. Major new features of the 3.3 series, compared to 3.2 Python 3.3 includes a range of improvements of the 3.x series, as well as easier porting between 2.x and 3.x. PEP 380, syntax for delegating …

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  • Release – Python 3.3.2

    Version: None

    Released: May 15, 2013

    regressions <http://docs.python.org/release/3.3.2/whatsnew/changelog.html>`_ found in Python 3.3.1. Major new features of the 3.3 series, compared to 3.2 Python 3.3 includes a range of improvements of the 3.x series, as well as easier porting between 2.x and 3.x. PEP 380, syntax for delegating …

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  • Release – Python 3.3.3

    Version: None

    Released: Nov. 17, 2013

    fixes several security issues and various other bugs found in Python 3.3.2. This release fully supports OS X 10.9 Mavericks. In particular, this release fixes an issue that could cause previous versions of Python to crash when typing in interactive mode on OS X 10.9. Major …

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  • 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 …

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  • 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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  • 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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  • Release – Python 3.14.0rc3

    Version: None

    Released: Sept. 18, 2025

    It's 🪄 finally 🪄 the final 3.14 release candidate! Note: It's another magic release. We fixed another bug that required bumping the magic number stored in Python bytecode (.pyc) files. This means file .pyc files created for rc2 cannot be used for rc3, and they'll be recompiled. …

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  • Known bugs in Python 2.2.1

    ...hash order of dict items is different than in previous versions. (No code should rely on this order, but it's easy to forget this.) <p><li>Assignment to __debug__ raises SyntaxError at compile-time. <p><li>The UTF-16 codec was modified to be more RFC compliant. It will now only remove BOM characters at the start of the string and then only if running in native mode (UTF-16-LE and -BE won't remove a leading BMO character). <p><li>Many error messages are differ...

  • Incompatibilities between Python 2.1[.x] and 2.2[.x]

    ...hash order of dict items is different than in previous versions. (No code should rely on this order, but it's easy to forget this.) <p><li>Assignment to __debug__ raises SyntaxError at compile-time. <p><li>The UTF-16 codec was modified to be more RFC compliant. It will now only remove BOM characters at the start of the string and then only if running in native mode (UTF-16-LE and -BE won't remove a leading BMO character). <p><li>Many error messages are differ...

  • Python 3.3.0 Release

    ...Hash randomization, introduced in earlier bugfix releases, is now switched on by default See these resources for further information: What's new in 3.3? 3.3 Release Schedule Change log for this release. Online Documentation Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a production release. Please report any bugs you encounter. We currently support these formats for download: Bzipped source tar ball (3.3.0) (sig), ~ 14 MB XZ compressed source...

  • Python 3.3.1 Release

    ...Hash randomization, introduced in earlier bugfix releases, is now switched on by default More resources Change log for this release. Online Documentation What's new in 3.3? 3.3 Release Schedule Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a production release. Please report any bugs you encounter. We currently support these formats for download: Bzipped source tar ball (3.3.1) (sig), ~ 14 MB XZ compressed source tar ball (3.3.1) (sig), ~ 1...

  • Python 3.3.2 Release

    ...Hash randomization, introduced in earlier bugfix releases, is now switched on by default More resources Change log for this release. Online Documentation What's new in 3.3? 3.3 Release Schedule Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a production release. Please report any bugs you encounter. We currently support these formats for download: Bzipped source tar ball (3.3.2) (sig), ~ 14 MB XZ compressed source tar ball (3.3.2) (sig), ~ 1...

  • Python 3.3.3 Release

    ...Hash randomization, introduced in earlier bugfix releases, is now switched on by default More resources Change log for this release. Online Documentation What's new in 3.3? 3.3 Release Schedule Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a production release. Please report any bugs you encounter. We currently support these formats for download: Bzipped source tar ball (3.3.3) (sig), ~ 14 MB XZ compressed source tar ball (3.3.3) (sig), ~ 11...

  • Python 3.3.4 Release

    ...Hash randomization, introduced in earlier bugfix releases, is now switched on by default More resources Change log for this release. Online Documentation What's new in 3.3? 3.3 Release Schedule Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a production release. Please report any bugs you encounter. We support these formats for download: XZ compressed source tar ball (3.3.4) (sig), ~ 11 MB Gzipped source tar ball (3.3.4) (sig), ~ 16 MB Wi...

  • 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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