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  • Python Success Stories

    ...numbers into Numeric arrays in Python. Originally quite a bit of preprocessing was involved to scale down the data to fit our internal model. We did not want to go through the reading and scaling process every time the program was launched because it was quite time consuming. Instead we were able to read and scale the data once, then Pickle the internal structure to a compressed file. Now the program had only to decompress the data and load it directly into the appropriate data structure, result...

  • Conversion to Emeritus PSF Membership

    Conversion to Emeritus PSF Membership The PSF needs active members. Active members represent the Python community and, at minimum, participate in the annual PSF members' meetings. If you are unable to participate actively, please consider conversion to emeritus membership. Inactive members make progress difficult for the PSF. PSF members' meetings require a quorum, a minimum number of members who attend in person or vote by proxy/absentee ballot. Some decisions require a two-thirds majorit...

  • Release – Python 3.10.0b3

    Version: None

    Released: June 17, 2021

    This is a beta preview of Python 3.10 Python 3.10 is still in development. 3.10.0b3 is the third of four planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support …

  • Release – Python 3.12.0a3

    Version: None

    Released: Dec. 6, 2022

    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, 3.12.0a3 is the second of seven planned alpha releases. Alpha releases are intended to make it easier to test the current state …

  • 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 …

  • 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, to be …

  • 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, 2023-10-02, to …

  • Comparing Option-Parsing Libraries

    Comparing Option-Parsing Libraries Comparing Option-Parsing Libraries NOTE: this page is present for historical purposes only. The getopt-sig is retired, and Optik was added to the Python standard library (as optparse) in Python 2.3. (It was checked in to Python's CVS tree in November 2002, and first released in July 2003.) Since I proposed Optik for the Python standard library, a number of other option-parsing libraries have come to light. I'm trying to evaluate them by ...

  • Notes

    ...numbers use rich comparisons to define == and != but raise an exception for <, <=, > and >=. Unfortunately, this also means that cmp() of two complex numbers raises an exception when the two numbers differ. Since it is not mathematically meaningful to compare complex numbers except for equality, I hope that this doesn't break too much code. The outcome of comparing non-numeric objects of different types is not defined by the language, other than that it's arbitrary but consistent ...

  • You may designate someone to vote on your behalf at the meeting, a proxy. Be sure that your designated proxy will be attending the meeting and is willing to act as your proxy. PSF members who have indicated their willingness to act as proxy are listed in the meeting agenda. Designation of Proxy As a member of the Python Software Foundation (PSF), I hereby appoint ______________________________________________________________ [Print the name of the person you are appointing as your proxy....

  • Release – Python 3.9.0a3

    Version: None

    Released: Jan. 24, 2020

    This is an early developer preview of Python 3.9 Python 3.9 is still in development. This release, 3.9.0a3 is the third of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the release …

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  • Python Software Foundation: Minutes of Board of Directors Meeting (May 13, 2003)

    ...numbers mean we made a net profit on the conference of of 3782.46. Guido reports that we were supposed to have gotten $3600 in sponsor money, but only got $3100. The missing $500 is from sams publishing. 4. Conference planning Thomas suggest that we should look into the next PyCon, and suggests that Steve Holden is invited to chair organization of that conference again. Thomas will contact him about that. 5. Sunsite DK Guido reports that Martin Dalum has offered to host the Python developme...

  • Release – Python 2.3.4

    Version: None

    Released: May 27, 2004

    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. If you need …

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  • Release – Python 2.3.3

    Version: None

    Released: Dec. 19, 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. If you need …

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  • Python 2.3.3

    Python 2.3.3 Python 2.3.3 Note: See Python 2.3.5 for a patch release 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. If you need to remain with Python 2.3, there's a patch available from the security advisory page. Important: ...

  • Python 2.3.4

    Python 2.3.4 Python 2.3.4 Note: See Python 2.3.5 for 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. If you need to remain with Python 2.3, there's a patch available from the security advisory page. Important: 2.3.5 in...

  • Python Security

    Python Security Reporting security issues with PyPI or a project hosted on PyPI See the security issue information for pypi.org here. Reporting security issues The Python Software Foundation and the Python developer community take security vulnerabilities very seriously. A Python Security Response Team (PSRT) has been formed that does triage on all reported vulnerabilities and works to resolve them. To reach the response team, send email to security at python dot org. Only the response te...

  • Python Software Foundation: Press Release 29-Jul-2003

    Python Software Foundation: Press Release 29-Jul-2003 July 29, 2003 Press Release SOURCE: Python Software Foundation PYTHON SOFTWARE FOUNDATION (PSF) ANNOUNCES PYTHON VERSION 2.3 New release enhances powerful programming language FREDERICKSBURG, Va., July 29, 2003 -- The Python Software Foundation (PSF) announces the release of version 2.3 of the Python programming language. This major release introduces performance enhancements, increased robustness, several minor language feature...

  • 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 3.7.14

    Version: None

    Released: Sept. 6, 2022

    Note: The release you are looking at is a security 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. Please see …

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Python language documentation

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