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  • Notes

    ...ch comparison overloading" (PEP 207). C extension types can provide a rich comparison function in the new tp_richcompare slot in the type object. The cmp() function and the C function PyObject_Compare() first try the new rich comparison operators before trying the old 3-way comparison. There is also a new C API PyObject_RichCompare() (which also falls back on the old 3-way comparison, but does not constrain the outcome of the rich comparison to a Boolean result). The rich comparison func...

  • Notes

    ...cause Python's cyclic gc had no knowledge of Python's weakref objects. It does now. When weakrefs with callbacks become part of cyclic garbage now, those weakrefs are cleared first. The callbacks don't trigger then, preventing the problems. If you need callbacks to trigger, then just as when cyclic gc is not involved, you need to write your code so that weakref objects outlive the objects they weakly reference. Critical bugfix, for SF bug 840829: if cyclic garbage collection happened to occ...

  • Python 2.2.1

    ...ch could cause the uninstaller to disappear in some circumstances. Just drop it over the old uninstaller, which will be at C:\Python22\UNWISE.EXE unless you chose a different directory at install time. Macintosh users can find binaries and source on the Mac page or Jack Jansen's MacPython page. (MacOS X users who have a C compiler can also build from the source tarball below.) Red Hat Linux 7.3, 7.2 and 6.2 users can download RPMs, or build from source. An SRPM is also available f...

  • 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 test new features …

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  • 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 features and bug fixes …

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  • Python Success Stories

    ...ction IFCs currently run only under Linux, with others planned. The Business Logic is a layer of rules which handle data validation, access control, and customizable business-specific knowledge held by the customer organization. The Business Logic Modules are designed to be changed to quickly develop applications on top of the CAPS framework. The various clients are front-ends which talk to the Business Logic, which mediates all client communication with the IFC. Our customizable GUI-client, wri...

  • Release – Python 3.7.2rc1

    Version: None

    Released: Dec. 11, 2018

    Python 3.7.2rc1 is the release candidate preview of the second maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C API …

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  • Release – Python 3.7.3rc1

    Version: None

    Released: March 12, 2019

    Python 3.7.3rc1 is the release candidate preview of the third maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C API …

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  • Python Software Foundation: Minutes of Board of Directors Meeting (March 11, 2003)

    ...Cookbook royalties. Martin asks what further expenses are expected for the conference. Jeremy points to Tripp Lilley's budget at http://perspex.com/pycon/budget/20030310/budget.html 4. Conference planning Guido asks whether Jeremy can be given advance approval of conference related expenses. There is discussion. Tim moves that it is RESOLVED, that the officers can spend PSF funds for the furtherance of the Python Conference, 2003, in an amount not to exceed projected conference revenue by mo...

  • Python 2.6.8 license

    ...cript; clarified derivation from RFC 1321; now handles byte order either statically or dynamically. 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); added conditionalization for C++ compilation from Martin Purschke <purschke@bnl.gov>. 1999-05-03 lpd Original version. Asynchronous socket services¶ The asynchat and asyncore modules contain the following notice: Copy...

  • Python 2.6.9 license

    ...cript; clarified derivation from RFC 1321; now handles byte order either statically or dynamically. 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); added conditionalization for C++ compilation from Martin Purschke <purschke@bnl.gov>. 1999-05-03 lpd Original version. Asynchronous socket services¶ The asynchat and asyncore modules contain the following notice: Copy...

  • Python Success Stories

    ...central base station. A great deal of mechanical, electrical, electronic and optical design is required to create these lights. As is typical of modern complex devices, an embedded software program running on a microcontroller operates each unit, making it come to life. Like a miniature version of the Monolith from 2001: A Space Odyssey, each light maintains itself, ready to perform its function whenever the need arises. The Future of Practical Computing Current practical computer applicatio...

  • Python 2.0

    ...cribed by PEP 214. Optional Collection of Cyclical Garbage Python is now equipped with a garbage collector that can hunt down cyclical references between Python objects. It's no replacement for reference counting; in fact, it depends on the reference counts being correct, and decides that a set of objects belong to a cycle if all their reference counts can be accounted for from their references to each other. This devious scheme was first proposed by Eric Tiedemann, and brought t...

  • Python Success Stories

    ...cure 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 replicate servic...

  • PSF Weblog Policy

    ...cy Version 1.03 Accepted by the PSF Board, March 13 2006. This policy applies to the PSF weblog. Access Policies Officers will always have posting privileges for the weblog. Therefore, officers can always post items without requiring permission from anyone else. This access is removed when the person is no longer an officer. The Board will appoint a weblog editor, who will also have posting access. PSF members and PSF committees can submit items for posting to the weblog editor, who can acc...

  • Release – Python 3.7.0rc1

    Version: None

    Released: June 11, 2018

    This is the release candidate of Python 3.7.0 This release, 3.7.0rc1, is the final planned release preview. Assuming no critical problems are found prior to 2018-06-27, the scheduled release date for 3.7.0, no code changes are planned between this release candidate and the final release. Among the major …

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  • Release – Python 3.7.0

    Version: None

    Released: June 27, 2018

    Note: The release you are looking at is Python 3.7.0, the initial feature release 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 3.7 was 3.7.17 …

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  • Release – Python 3.7.1rc1

    Version: None

    Released: Sept. 26, 2018

    Python 3.7.1rc1 is a release candidate preview of the first maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C API …

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  • Release – Python 3.7.1rc2

    Version: None

    Released: Oct. 13, 2018

    Python 3.7.1rc2 is the second release candidate preview of the first maintenance release of Python 3.7. The Python 3.7 series is the newest major release of the Python language and contains many new features and optimizations. Among the major new features in Python 3.7 are: PEP 539, new C …

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  • Release – Python 3.7.1

    Version: None

    Released: Oct. 20, 2018

    Note: The release you are looking at is a bugfix release 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 3.7 was 3.7.17. Among the major …

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