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  • Towards a Standard Parser Generator

    ...build process of all compiled files, and a number of Python wrapper files to expose the parser to Python. flex, bison, and SWIG are invoked to generate C code, The C code is compiled to form an extension module. Recently, this build procedure was completely restructured. Today, BisonGen implements the LALR(1) algorithm itself, not relying on bison anymore. Therefore, the build procedure is simplified to: BisonGen parses the XML specification of the grammar. ...

  • Release – Python 3.7.0a1

    Version: None

    Released: Sept. 19, 2017

    This is an early developer preview of Python 3.7 Major new features of the 3.7 series, compared to 3.6 Python 3.7 is still in development. This releasee, 3.7.0a1 is the first of four planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

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  • Release – Python 3.7.9

    Version: None

    Released: Aug. 17, 2020

    Note: The release you are looking at is Python 3.7.9, the final bugfix/security release with binary installers for the legacy 3.7 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 …

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  • About the Python Software Foundation

    ...BUILD, SUPPORT, AND MAINTAIN CRITICAL PUBLIC GOODs FOR THE PYTHON COMMUNITY. We host PyPI, the Python package repository relied on by thousands of users with a huge range of projects. We've brought on board a Packaging Project Manager to best serve PyPI users We've added a full-time CPython Developer in Residence to our team, who amplifies volunteer contributors’ impact by processing CPython pull requests and tackling structural improvements. OUR SPONSORS DONATE TO THE PSF BECOME A MEMBER ...

  • Release – Python 2.4.1

    Version: None

    Released: March 30, 2005

    We are pleased to announce the release of Python 2.4.1 (final) on March 30, 2005. 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 …

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  • Release – Python 2.4.2

    Version: None

    Released: Sept. 27, 2005

    We are pleased to announce the release of Python 2.4.2 (final), a bugfix release, on September 28, 2005. 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 …

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  • Release – Python 3.14.0b3

    Version: None

    Released: June 17, 2025

    It's 3.14 beta 3! https://www.python.org/downloads/release/python-3140b3/ This is a beta preview of Python 3.14 Python 3.14 is still in development. This release, 3.14.0b3, is the third of four planned beta releases. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and …

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  • Python 2.4.1

    Python 2.4.1 Python 2.4.1 Python 2.4.1 has been replaced by a newer bugfix release. Please see the releases page to select a more recent release. We are pleased to announce the release of Python 2.4.1 (final) on March 30, 2005. 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 Note: there's a security fix for SimpleXMLR...

  • Python 2.4.2 Release

    Python 2.4.2 Release Python 2.4.2 Python 2.4.2 has been replaced by a newer bugfix release of Python. Please see the releases page to select a more recent release. We are pleased to announce the release of Python 2.4.2 (final), a bugfix release, on September 28, 2005. 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 Pyt...

  • Release – Python 3.7.0a2

    Version: None

    Released: Oct. 17, 2017

    This is an early developer preview of Python 3.7 Major new features of the 3.7 series, compared to 3.6 Python 3.7 is still in development. This releasee, 3.7.0a2, is the second of four planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

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  • Python Software Foundation: Press Release 31-May-2003

    ...build system Ribosome (ribosome.helixcommunity.org) and our Python driven test player (pyplayer.helixcommunity.org). Python has been a great choice for us; it has offered us flexibility and robustness and has made it possible for us to write modular, easily-maintained tools. We're very happy with the results," said Rob Lanphier, Helix Community Coordinator. Other companies using Python include The New York Stock Exchange, Google, Philips, Hewlett Packard, Rackspace, Industrial Light and...

  • Python Software Foundation: Press Release 23-Sep-2003

    ...building more robust applications. Key features of Python include: Object orientation, modular name spaces, exceptions, and multi-threading High-level dynamic data typing and very late binding Tight integration with C, C++, and Java modules May be compiled to Java byte code for use in any JVM String and regular expression processing Extensive XML and web services support HTTP, FTP, SMTP, POP, IMAP, NNTP, telnet, and other IP protocols HTML, MIME, base64, binhex, uuencode, and othe...

  • Python Software Foundation: Press Release 19-Dec-2003

    ...building more robust applications. Key features of Python include: Object orientation, modular name spaces, exceptions, and multi-threading High-level dynamic data typing and very late binding Tight integration with C, C++, and Java modules May be compiled to Java byte code for use in any JVM String and regular expression processing Extensive XML and web services support HTTP, FTP, SMTP, POP, IMAP, NNTP, telnet, and other IP protocols HTML, MIME, base64, binhex, uuencode, and othe...

  • Release – Python 2.4.4

    Version: None

    Released: Oct. 18, 2006

    Python 2.4 is now in bugfix-only mode; no new features are being added. At least 80 bugs have been squished since Python 2.4.3, including a number of bugs and potential bugs found by with the Coverity and …

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  • Python Success Stories

    ...build a secure communication channel. The Siena Web Services Architecture Zoom in Above and Beyond Web Services With these basic building blocks, we were moving towards realizing the Siena Web Services Architecture, which included a Python-based server side, a COM client side agent (also written in Python), and a Java client side agent. One distinct advantage of writing both the server side and COM client side of our Web services architecture in Python was that we could automatically replic...

  • Python 2.4.4 Release

    Python 2.4.4 Release Python 2.4.4 We are pleased to announce the release of Python 2.4.4 (FINAL), a bugfix release of Python 2.4, on October 18, 2006. Important: 2.4.4 includes a security fix (PSF-2006-001) for the repr() of unicode strings in wide unicode builds (UCS-4) Python 2.4 is now in bugfix-only mode; no new features are being added. At least 80 bugs have been squished since Python 2.4.3, including a number of bugs and potential bugs found by with the Coverity and Klocwork static an...

  • Release – Python 2.6.9

    Version: None

    Released: Oct. 29, 2013

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  • Release – Python 3.7.0a3

    Version: None

    Released: Dec. 5, 2017

    This is an early developer preview of Python 3.7 Major new features of the 3.7 series, compared to 3.6 Python 3.7 is still in development. This releasee, 3.7.0a3, is the third of four planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

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  • Release – Python 3.9.12

    Version: None

    Released: March 23, 2022

    This is the twelfth maintenance release of Python 3.9 Note: The release you're looking at is Python 3.9.12, 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. This is a special …

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  • Release – Python 3.10.4

    Version: None

    Released: March 24, 2022

    This is the fourth maintenance release of Python 3.10 Python 3.10.4 is the newest major release of the Python programming language, and it contains many new features and optimizations. This is a special release that fixes a regression introduced by BPO 46968 which caused Python to no longer build on …

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