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  • Python 2.2.1

    ...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 2.2, there's a patch available from the security advisory page. We are pleased to announce the release of Python 2.2.1, on April 10, 2002. This is a bug-fix release for Python 2.2 and supersedes the 2.2 release....

  • Python 3.1 Release

    ...import statement New syntax for nested with statements See these resources for further information: What's new in 3.1? Python 3.1 change log. Online Documentation Report bugs at http://bugs.python.org. Help fund Python and its community. Download This is a production release. We currently support these formats for download: Gzipped source tar ball (3.1) (sig) Bzipped source tar ball (3.1) (sig) Windows x86 MSI Installer (3.1) (sig) Windows X86-64 MSI Installer (3.1) [1] (sig) Mac Installer...

  • PSF Newsletter Signup

    ...important community news. You can view past issues here. Follow @ThePSF on Mastodon or X (Twitter) for the latest information. #mc_embed_signup{background:#fff; clear:left; font:14px Helvetica,Arial,sans-serif; } /* Add your own Mailchimp form style overrides in your site stylesheet or in this style block. We recommend moving this block and the preceding CSS link to the HEAD of your HTML file. */ #mc-embedded-subscribe-form input[type=checkbox]{display: inline; widt...

  • 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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  • Python Success Stories

    ...import cog, handyxml for p in handyxml.xpath('Properties.xml', '//property'): cog.outl("Property%s," % p.name) ]]] */ // [[[end]]] }; After running this file through Cog, it looks like this: // SchemaPropEnum.h enum SchemaPropEnum { /* [[[cog import cog, handyxml for p in handyxml.xpath('Properties.xml', '//property'): cog.outl("Property%s," % p.name) ]]] */ PropertyId, P...

  • Known bugs in Python 2.2.1

    ...import nested_scopes" in 2.1[.1]). This may change the meaning of code like the following: <pre> def f(<font color="red">str</font>): def g(x): return <font color="red">str</font>(x) return g System Message: WARNING/2 (<string>, line 68) Definition list ends without a blank line; unexpected unindent. </pre> In this example, the use of <font color="red">str</font> inside the inner function g() now refe...

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

    ...import nested_scopes" in 2.1[.1]). This may change the meaning of code like the following: <pre> def f(<font color="red">str</font>): def g(x): return <font color="red">str</font>(x) return g System Message: WARNING/2 (<string>, line 58) Definition list ends without a blank line; unexpected unindent. </pre> In this example, the use of <font color="red">str</font> inside the inner function g() now refe...

  • Python 3.3.0 Release

    ...import system (__import__) is based on importlib by default The new "lzma" module with LZMA/XZ support PEP 397, a Python launcher for Windows PEP 405, virtual environment support in core PEP 420, namespace package support PEP 3151, reworking the OS and IO exception hierarchy PEP 3155, qualified name for classes and functions PEP 409, suppressing exception context PEP 414, explicit Unicode literals to help with porting PEP 418, extended platform-independent clocks in the "time"...

  • Python 3.3.1 Release

    ...import system (__import__) is based on importlib by default The new "lzma" module with LZMA/XZ support PEP 397, a Python launcher for Windows PEP 405, virtual environment support in core PEP 420, namespace package support PEP 3151, reworking the OS and IO exception hierarchy PEP 3155, qualified name for classes and functions PEP 409, suppressing exception context PEP 414, explicit Unicode literals to help with porting PEP 418, extended platform-independent clocks in the "time"...

  • Python 3.3.2 Release

    ...import system (__import__) is based on importlib by default The new "lzma" module with LZMA/XZ support PEP 397, a Python launcher for Windows PEP 405, virtual environment support in core PEP 420, namespace package support PEP 3151, reworking the OS and IO exception hierarchy PEP 3155, qualified name for classes and functions PEP 409, suppressing exception context PEP 414, explicit Unicode literals to help with porting PEP 418, extended platform-independent clocks in the "time"...

  • Python 3.3.3 Release

    ...import system (__import__) is based on importlib by default The new "lzma" module with LZMA/XZ support PEP 397, a Python launcher for Windows PEP 405, virtual environment support in core PEP 420, namespace package support PEP 3151, reworking the OS and IO exception hierarchy PEP 3155, qualified name for classes and functions PEP 409, suppressing exception context PEP 414, explicit Unicode literals to help with porting PEP 418, extended platform-independent clocks in the "time"...

  • Python 3.3.4 Release

    ...import system (__import__) is based on importlib by default The new "lzma" module with LZMA/XZ support PEP 397, a Python launcher for Windows PEP 405, virtual environment support in core PEP 420, namespace package support PEP 3151, reworking the OS and IO exception hierarchy PEP 3155, qualified name for classes and functions PEP 409, suppressing exception context PEP 414, explicit Unicode literals to help with porting PEP 418, extended platform-independent clocks in the "time"...

  • Executive Summary: The Python Software Foundation

    ...important concern here is that the licensing was made by those that had a legal right to do so, in other words by the original authors or copyright holders of the code. The legal history of the code in Python is thus defined in two ways: (1) In the earlier days of Python, employee contracts and related law ensured that the organizations that released Python under the various licenses had the rights to the code that was added in each release. The open source licenses used by those organizations g...

  • Archive 2018: Executive Summary: The Python Software Foundation

    ...important concern here is that the licensing was made by those that had a legal right to do so, in other words by the original authors or copyright holders of the code. The legal history of the code in Python is thus defined in two ways: (1) In the earlier days of Python, employee contracts and related law ensured that the organizations that released Python under the various licenses had the rights to the code that was added in each release. The open source licenses used by those organizations g...

  • 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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