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  • Python 3.3.5 release

    ...ide" and "narrow" Unicode builds) A C implementation of the "decimal" module, with up to 120x speedup for decimal-heavy applications The 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 P...

  • Release – Python 3.2.6rc1

    Version: None

    Released: Oct. 4, 2014

    This is a security-fix source-only release. The last binary release was 3.2.5. The list of fixed security related issues can be found in the NEWS file. New features of the 3.2 series, compared to 3.1 Python 3.2 is a continuation of the efforts to …

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  • PSF Conflict of Interest Policy

    ...idered broadly. The highest standards of ethics apply for all PSF members, officers, and directors. What to do about conflicts of interest: Possible conflicts of interest should be disclosed to all decision-makers prior to any action being taken. You should also provide a full description of the way in which you (or someone connected to you) may financially benefit from the decision that is being considered. This disclosure should be in writing or on the record so that there is appropriate docum...

  • PSF Fundraiser for Q2 2021

    ...ide PyCon scholarships, grants, and support the advancement of the Python language. Your support also allows us to sustain the new Developer-in-Residence program and the Packaging Project Manager position. Our fundraising goal of $80,000 is only a small portion of what is needed to provide these critical programs for our community. To ensure that the Python Software Foundation can continue to provide these resources for the next twenty years, make a donation right now. As an added bo...

  • The Python 2.3 Method Resolution Order

    ...ido points out in his essay [3] that the classic MRO is not so bad in practice, since one can typically avoids diamonds for classic classes. But all new style classes inherit from object, therefore diamonds are unavoidable and inconsistencies shows up in every multiple inheritance graph. The MRO of Python 2.2 makes breaking monotonicity difficult, but not impossible. The following example, originally provided by Samuele Pedroni, shows that the MRO of Python 2.2 is non-monotonic: >>> c...

  • Release – Python 3.7.0b1

    Version: None

    Released: Jan. 31, 2018

    This is a beta preview of Python 3.7 Python 3.7 is still in development. This release, 3.7.0b1, is the first of four planned beta release previews. Among the major new features in Python 3.7 are: PEP 538, Coercing the legacy C locale to a UTF-8 …

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  • Release – Python 3.7.0b2

    Version: None

    Released: Feb. 28, 2018

    This is a beta preview of Python 3.7 Python 3.7 is still in development. This release, 3.7.0b2, is the second of four planned beta release previews. Among the major new features in Python 3.7 are: PEP 538, Coercing the legacy C locale to a UTF-8 …

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  • Release – Python 3.6.5

    Version: None

    Released: March 28, 2018

    Note: The release you are looking at is Python 3.6.5, a bugfix release for the legacy 3.6 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 3.6 was 3.6.15 and …

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  • Release – Python 3.6.6

    Version: None

    Released: June 27, 2018

    Note: The release you are looking at is Python 3.6.6, a bugfix release for the legacy 3.6 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 3.6 was 3.6.15 and …

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  • Release – Python 3.6.7

    Version: None

    Released: Oct. 20, 2018

    Note: The release you are looking at is Python 3.6.7, a bugfix release for the legacy 3.6 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 3.6 was 3.6.15 and …

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  • Release – Python 3.6.8

    Version: None

    Released: Dec. 24, 2018

    Note: The release you are looking at is Python 3.6.8, the final bugfix release for the legacy 3.6 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 3.6 was 3.6.15 …

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  • Release – Python 3.7.2

    Version: None

    Released: Dec. 24, 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 …

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  • Bugs in Python 2.3.1

    ...IDLE now executes code in a separate process. To communicate between the main process and executing processes, IDLE opens a socket to 127.0.0.1 (the local machine). Some firewalls running on Windows machines interfere with this and can cause either silent failures or erroneous popup windows from the firewall. This problem only occurs if you run a firewall on the same machine as IDLE.</li> <li>The test for the ossaudiodev module hangs on some Red Hat systems. (This test is only ru...

  • Audio/Video Instructional Materials for Python

    ...ideo Instructional Materials for Python audio, video, instructional material, python, podcast, podcasts A growing body of podcasts, screencasts and video presentations for the Python community. There is a growing body of podcasts, screencasts and video presentations for the Python community. This page collects some of the best. Podcast Repositories core.py Pablo Galindo and Łukasz Langa talk about Python internals, because they work on Python internals. PyPodcats Hidden Figures of Python pod...

  • 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...

  • Python 2.6.8 license

    ...ido van Rossum at Stichting Mathematisch Centrum (CWI, see http://www.cwi.nl/) in the Netherlands as a successor of a language called ABC. Guido remains Python’s principal author, although it includes many contributions from others. In 1995, Guido continued his work on Python at the Corporation for National Research Initiatives (CNRI, see http://www.cnri.reston.va.us/) in Reston, Virginia where he released several versions of the software. In May 2000, Guido and the Python core dev...

  • Python 2.6.9 license

    ...ido van Rossum at Stichting Mathematisch Centrum (CWI, see http://www.cwi.nl/) in the Netherlands as a successor of a language called ABC. Guido remains Python’s principal author, although it includes many contributions from others. In 1995, Guido continued his work on Python at the Corporation for National Research Initiatives (CNRI, see http://www.cnri.reston.va.us/) in Reston, Virginia where he released several versions of the software. In May 2000, Guido and the Python core dev...

  • comp.lang.python.announce Posting Guidelines

    ...idelines In addition to honoring the c.l.py.a charter (see above), you are asked to consider the following things when submitting announcements for comp.lang.python.announce: It is often very helpful to INCLUDE SOME BACKGROUND INFORMATION if you are announcing a very specialized package or event. Submissions will be rejected by the moderators if a casual c.l.py.a reader cannot understand the utility or context of your announcement. INCLUDE A URL (web address) for your announcement. Hint: a &q...

  • Release – Python 3.7.0b5

    Version: None

    Released: May 30, 2018

    This is a beta preview of Python 3.7 Python 3.7 is still in development. This release, 3.7.0b5, is now the final planned beta release preview. Originally, 3.7.0b4 was intended to be the final beta but, due to some unexpected compatibility issues discovered during beta testing of third-party packages, …

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  • Python Documentation Index

    Python Documentation Index Python Essays In this directory I place short essays (anything from 500 to 5000 words) on various Python subjects. See also a collection of presentations I have given. See also my blog at blogspot.com and my previous blog at artima.com. --Guido van Rossum Table of contents (in mostly chronological order) Unifying types and classes in Python 2.2 (See below) Foreword for "Programming Python" (1st ed.) Written in 1996, this gives an overview of the earl...

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