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  • 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 3.9.21

    Version: None

    Released: Dec. 3, 2024

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.21, a security bugfix release for the legacy 3.9 series. Python 3.13 is now the latest feature release series of Python 3. Get the latest release of 3.13.x here. Security content …

    View Release Notes

  • PSF Contributor Agreement

    ...while you are submitting your first change to a Python-owned repository on GitHub. That's the recommended way as it is fully automated. The Contributor Agreement page you're looking at now is mainly intended for signing Contributor Agreements on behalf of organizations. This form is manually reviewed which takes time to process. This Contributor Agreement is between Python Software Foundation (“PSF”) and the individual or other entity identified below (“the Contribut...

  • Python Success Stories

    Python Success Stories Introduction Gusto.com began as an online travel site under the domain name EZTrip.com which catered to the traveler looking to make online flight, hotel and car reservations. As our customer base grew we started seeing a need to allow our customers to report on their journeys in the form of travel reviews, blogs, sharing photos and other post trip needs. While we've continued to develop and improve our online booking engines and related systems that communicate with...

  • Python Success Stories

    ...While we were able to re-fit the application and add increased functionality, the project ultimately failed due in large part to the problems encountered while using the object framework provided by PHP. Memory leaks, inconsistent interfaces, inconsistent internal data model, randomly freed objects, multiple object copies despite explicit use of references, internal PHP errors, and untraceable code failures all but made the task impossible to accomplish in PHP. Even after we achieved a relativel...

  • Python Success Stories

    ...while also verifying that the candidates to be tested are not simple variations of each other's basic chemical structure. Process Improvements Needed Much of the work on drug identification actually takes place through collaboration between many research groups scattered around the world. As part of this process, experimental chemists send a list of compounds to the computational chemist, who works on the data set and sends back the results. Historically, experimental chemists were forced to r...

  • Release – Python 3.13.0rc1

    Version: None

    Released: Aug. 1, 2024

    This is the first release candidate of Python 3.13.0 This release, 3.13.0rc1, 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 …

    View Release Notes

  • Python Success Stories

    ...while trying to send a completed Web form, and bad press for the registry afterwards. For a variety of reasons, this particular landrush was a technical success, with zero crashes. This article focuses on the role that Python played in this success. Buffering the Requests The AFNIC registration system was written years ago, mostly in Perl. It responds to registration requests, satisfies them, and then returns confirmation to the web client, all in one synchronous request/response cycle. Altho...

  • Proposed Improvements to Module Cleanup

    ...While modules are generally not involved in cycles (except when there are mutually recursive imports), a module's dictionary generally is involved in a cycle because every function and method defined in the module references its __dict__, and these functions and methods are generally reachable from that __dict__. Thus, when a module is deleted, I explicitly clear its __dict__ carefully. (This has always been done, just not "carefully".) Motivation M1 is done because these variable...

  • Python Success Stories

    ...While these developers are well familiar with C (by far the most popular high level language for embedded systems) a C program written for a standard desktop or server is quite different in style from one for a microcontroller. The compactness of Python programs is especially important, because embedded developers have, by necessity, learned to express their designs in a very small amount of code. Python's automated memory management also helps, because many embedded developers have little expe...

  • Job - Senior Python Developer

    Location: São Paulo, São Paulo Brazil

    Telecommuting: Yes

    As a Senior Python Developer at CIAL Dun & Bradstreet, your primary responsibility is to design, develop, and maintain scalable backend services and performant web applications using frameworks such as Django, Flask, or FastAPI. You will play a central role in the data lifecycle by building robust ETL processes and …

  • Python Copyright

    ...While CWI is the initial source for this software, a modified version is made available by the Corporation for National Research Initiatives (CNRI) at the Internet address http://www.python.org. STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WH...

  • Parade of the PEPs

    ...while the spec in the PEP would print 5 a 6 b 7 c 8 d 9 e Very confusing. I propose to remove the start/stop arguments, or change the spec to: def iterindexed(sequence, start=0, stop=None): i = start while stop is None or i < stop: try: item = sequence[i] except IndexError: break yield (i, item) i += 1 This reduces the validity t...

  • Executive Summary: The Python Software Foundation

    ...While the registration fee for attendees is set below the cost of running the conference, the added sponsor fees more than made up the difference each year. While unintended, turning a profit at PyCon has helped the PSF build a reserve fund which now makes it possible to take on the significant financial commitment of booking ever-larger conference venues. More recently, PSF has started to fund some other Python conferences by sponsoring (or donating funds to) the organizations that run the conf...

  • Archive 2018: Executive Summary: The Python Software Foundation

    ...While the registration fee for attendees is set below the cost of running the conference, the added sponsor fees more than made up the difference each year. While unintended, turning a profit at PyCon has helped the PSF build a reserve fund which now makes it possible to take on the significant financial commitment of booking ever-larger conference venues. More recently, PSF has started to fund some other Python conferences by sponsoring (or donating funds to) the organizations that run the conf...

  • Release – Python 3.9.17

    Version: None

    Released: June 6, 2023

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.17, a security 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. Security content …

    View Release Notes

  • Job - Staff Software Engineer

    Location: Boston, MA United States of America

    Telecommuting: Yes

    We’re hiring a Staff Software Engineer to play a foundational role on our engineering team. You’ll be joining a newly formed team of three engineers, collaborating on technical direction and fostering shared growth as we build the operating system for pediatric care. In this role, you’ll architect and build …

  • Python Software Foundation: Minutes of Board of Directors Meeting (January 11, 2005)

    ...While it was too late for this year the Board as a whole felt that this should really be the subject of policy in future years to avoid the appearance of favoritism. It was RESOLVED that the Python Conference Committee is given additional funds of up to $3,000 to pay attendance costs for individuals attending PyCon 2005 , at the discretion of the Conference Committee. Approved 7-0-0. 7. Web Site Redesign Steve reported that a proposal had been received from Tim Parkin of Pollenation Intern...

  • Job - Junior Full Stack Developer

    Location: Remote, Remote United States

    About the Role We're hiring a Junior Full-Stack Developer to help us build technology that matters. At the Patrick J. McGovern Foundation, we believe that data and AI products can be catalysts for systemic change when built with rigor, deployed with intention, and designed alongside the people they're meant …

  • Standard Exception Classes in Python 1.5

    ...while it is an exception, it is not an error. Most standard exceptions are direct descendants of StandardError. Some related exceptions are grouped together using an intermediate class derived from StandardError; this makes it possible to catch several different exceptions in one except clause, without using the tuple notation. We looked into introducing more groups of related exceptions, but couldn't decide on the best grouping. In a language as dynamic as Python, it's hard to say...

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