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  • Release – Python 3.12.0b2

    Version: None

    Released: June 6, 2023

    This is a beta preview of Python 3.12 Python 3.12 is still in development. This release, 3.12.0b2 is the second of four beta release previews of 3.12. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to …

  • Release – Python 3.12.5

    Version: None

    Released: Aug. 6, 2024

    This is the fifth maintenance release of Python 3.12 Python 3.12 is the newest major release of the Python programming language, and it contains many new features and optimizations. 3.12.5 is the latest maintenance release, containing more than 250 bugfixes, build improvements and documentation changes since 3.12.4. This …

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  • Release – Python 3.12.8

    Version: None

    Released: Dec. 3, 2024

    This is the eighth maintenance release of Python 3.12 Python 3.12.8 is the latest maintenance release of Python 3.12, containing more than 250 bug fixes, build improvements and documentation changes since 3.12.7. Security content in this release gh-126623: Upgraded libexpat to 2.6.4 to fix CVE-2024-50602 …

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  • Python Patterns - Implementing Graphs

    ...class to represent graphs, whose methods implement the various algorithms. While this appeals to the desire for structured programming, it doesn't make the code any more efficient (to the contrary). It does make it easier to add various labels to the nodes or arcs and to add algorithms that take those labels into account (e.g. to find the shortest route between two cities on a map). This, too, will be the subject of another column.

  • PSF Bylaws

    ...class of members (if the members are divided into classes), one third (1/3) of such class of members, represented in person or represented by proxy, shall constitute a quorum for the transaction of such item of business by that class of members. If a quorum is present, the affirmative vote of a majority of the members represented at the meeting and entitled to vote on the subject matter shall be the act of the members, unless the vote of a greater number or voting by class is required by the Gen...

  • PSF PyCon Trademark Usage Policy

    PSF PyCon Trademark Usage Policy PyCon, trademark, policy Version 1.0 "PyCon" Trademark Policy In order to protect the term "PyCon" against unwanted or misleading use by third parties, the PSF claims the term “PyCon” as a trademark worldwide for conference activities. The PSF is additionally pursuing registration of the mark in various jurisdictions. It is the policy of the Python Software Foundation to allow the use of "PyCon" for conferences that focus on Pytho...

  • Release – Python 3.12.0rc1

    Version: None

    Released: Aug. 6, 2023

    This is the first release candidate of Python 3.12.0 This release, 3.12.0rc1, 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 final release. The second candidate (and the last planned …

  • Release – Python 3.12.0rc2

    Version: None

    Released: Sept. 6, 2023

    This is the second release candidate of Python 3.12.0 This release, 3.12.0rc2, is the last release preview for Python 3.12. There will be no ABI changes from this point forward in the 3.12 series. The intent is for the final release of 3.12.0, scheduled for Monday, 2023-10-02, …

  • Release – Python 3.12.0rc3

    Version: None

    Released: Sept. 19, 2023

    This is the third release candidate of Python 3.12.0 This release, 3.12.0rc3, is the absolutely last release preview for Python 3.12. There will be no ABI changes from this point forward in the 3.12 series. The intent is for the final release of 3.12.0, scheduled for Monday, …

  • Release – Python 2.2.0

    Version: None

    Released: Dec. 21, 2001

    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 …

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  • Python 2.2

    ...Class Unification: A new way of introspecting instances of built-in types (PEP 252) and the ability to subclass built-in types (PEP 253) have been added. Here is a tutorial on these features. Iterators (PEP 234) and generators (PEP 255) were added. The second PEP adds a new reserved word, "yield", which must be enabled by adding "from __future__ import generators" to the top of every module that uses it. Without that, "yield" is treated as an identifier but a warning is issued. ...

  • Release – Python 3.12.0a7

    Version: None

    Released: April 4, 2023

    This is an early developer preview of Python 3.12. Major new features of the 3.12 series, compared to 3.11 Python 3.12 is still in development. This release, 3.12.0a7 is the seventh and final alpha release of 3.12. Alpha releases are intended to make it easier to …

  • Supporting Membership

    Supporting Membership Become a Supporting Member of the PSF! Sign up as a Supporting Member What does it mean to be a Supporting Member of the PSF? Supporting Members make an annual membership donation to the PSF to fund our work for the Python language and the Python community. Supporting Members have voting rights in annual PSF Board Elections and bylaw votes. Supporting Members provide an important share of the PSF’s annual revenue every year. Income from Supporting Membership...

  • Help Fund Python Development and Maintenance

    Help Fund Python Development and Maintenance Donate to Python Development and Maintenance The Python Software Foundation's goal is to increase the support we provide for Python development and maintenance. Through the donation button above, you can financially contribute to this cause. The PSF will use Python development fundraising to support CPython development and maintenance. Additionally, the funds will be used for mission-related sprints, such as the annual core dev...

  • Parade of the PEPs

    ...classes anyway, we should add warnings for uses of old-style classes. The PEP could be used to describe the timeframe for these warnings. But before then, we should first make sure that the entire standard library (and the demos and tools) use new-style classes. And that's not even going to happen in Python 2.3. Also, that may break user code that subclasses a particular standard class, e.g. if a user defines a subclass that depends on coercions, which aren't supported by new-style cl...

  • Release – Python 3.12.6

    Version: None

    Released: Sept. 6, 2024

    This is the sixth maintenance release of Python 3.12 Python 3.12 is the newest major release of the Python programming language, and it contains many new features and optimizations. 3.12.6 is the latest maintenance release, containing about 90 bugfixes, build improvements and documentation changes since 3.12.5. This is an …

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  • Python Software Foundation: Minutes of the 1st Meeting of Board of Directors

    ...class of members (if the members are divided into classes), one third (1/3) of such class of members, represented in person or represented by proxy, shall constitute a quorum for the transaction of such item of business by that class of members. If a quorum is present, the affirmative vote of a majority of the members represented at the meeting and entitled to vote on the subject matter shall be the act of the members, unless the vote of a greater number or voting by class is required by the Gen...

  • Release – Python 2.3.0

    Version: None

    Released: July 29, 2003

    This is 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 …

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  • Support Python in 2022!

    Support Python in 2022! It's our annual year-end PSF fundraiser and membership drive. There are two ways to join in: Donate to the PSF! Every dollar makes a difference. (Does every dollar also make a kitten somewhere purr? We make no promises, but maybe you should try, just in case?) DONATE TODAY Become a Supporting member! When you sign up as a Supporting Member of the PSF, you become a part of the PSF and help us sustain what we do with your annual support. You can sign up...

  • Python 2.3

    ...class system introduced in Python 2.2 has been significantly improved. Python 2.3 can be up to 30% faster than Python 2.2. Please see the separate bugs page for known issues and the bug reporting procedure. Download the release Windows users should download the Windows installer, Python-2.3.exe, run it and follow the friendly instructions on the screen to complete the installation. Windows users may also be interested in Mark Hammond's win32all, a collection of Windows-specific ...

Python language documentation

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