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  • Notes

    ...RETURN_NONE, Py_RETURN_TRUE, and Py_RETURN_FALSE. Each return the singleton they mention after Py_INCREF()ing them. Added a new function, PyTuple_Pack(n, ...) for constructing tuples from a variable length argument list of Python objects without having to invoke the more complex machinery of Py_BuildValue(). PyTuple_Pack(3, a, b, c) is equivalent to Py_BuildValue("(OOO)", a, b, c). Windows The _winreg module could segfault when reading very large registry values, due to unchecked ...

  • Towards a Standard Parser Generator

    ...return UnionExprs It may not be obvious how the return statement comes about; this was generated from semantic actions. The full definition of the rule in the XPath parser reads rule UnionExpr: PathExpr UnionExprs<<PathExpr>> {{return UnionExprs}} rule UnionExprs<<v>>: {{return v}} | BAR PathExpr UnionExprs<<self.nop(self.UNION,v,PathExpr)>> {{return Uni...

  • Standard Exception Classes in Python 1.5

    ...returns true iff class D is derived from class C, directly or indirectly. issubclass(C, C) always returns true. Both arguments must be class objects. isinstance(x, C) returns true iff x is an instance of C or of a (direct or indirect) subclass of C. The first argument may hyave any type; if x is not an instance of any class, isinstance(x, C) always returns false. The second argument must be a class object. Sequence Unpacking Previous Python versions require an exact...

  • Python Success Stories

    ...Return On Investment The assumptions used to derive the return on investment (ROI) figures presented here are conservative. I spent the bulk of 2001 developing a system using the ideas in this paper to automatically translate content from a BEACON visual programming language file directly into a Word document. In 2002 I also made significant revisions to the software. My total effort in development, maintenance, and support was about half time over a two year period. Between the years 2002 and 2...

  • Python Success Stories

    ...return a numerical error code but in some cases was found to return the string "error" instead. In Perl, strings and numbers are converted automatically, for example the string "123" becomes the integer 123. Unfortunately, Perl also converts non-numerical strings, such as "error", to 0. As a result of this, Drone was treating "error" as a successful return value, leading to incorrect results. Python's stronger typing uncovered the error as soon as the rare...

  • Python 2.0

    ...returns [(1,10), (2,20), (3,30)]. When the lists are not all the same length, the shortest list wins: zip([1,2,3], [10,20]) returns [(1,10), (2,20)]. See PEP 201. sys.version_info is a tuple (major, minor, micro, level, serial). Dictionaries have an odd new method, setdefault(key, default). dict.setdefault(key, default) returns dict[key] if it exists; if not, it sets dict[key] to default and returns that value. Thus: dict.setdefault(key, []).append(item) does the same ...

  • 2007-02-12 PSF Board Meeting Minutes

    ...returns (IRS 990) for 2001-2003, but nothing since. K. Kaiser has the 2005 return, but is holding off on the 2003 & 2004 returns because he is refiling them to make them consistent with our other filings. K. Kaiser will make the 2003, 2004, and 2005 PSF tax returns available on the web site. K. Kaiser will produce the 2006 PSF financials for the members' meeting. T. Peters asked about a final ruling from the IRS on the PSF's 501(c)(3) status. K. Kaiser noted that we do have the final rulin...

  • t1python - A Type1 Font Renderer for Python

    ...return shortly after the release of t1lib 0.9.1; expect it to arrive in early July (1999). It will be available from this page, and will contain support for all the new functions in t1lib, including the outline support. I plan on producing new documentation after the release is out. Release 0.7 This release contains almost no changes to the interfaces from Python, but has been updated to reflect changes to the most r...

  • SIG for development of Python/C++ integration

    ...return pointers or non-const references, in order to prevent dangling pointers and references from causing crashes on the Python side. This limits the library's ability to export arbitrary C++ functions. Goal: Implementation of a mechanism by which references and pointers to internal elements of function and method arguments can be returned safely. This will include a mechanism by which any argument object can be kept alive during the lifetime of any other argument obj...

  • Recurring Giving Campaign

    Recurring Giving Campaign Help us raise $30,000 USD by November 27th! #countdown-wrap { width: 70%; padding: 10px; font-family: arial; max-width: 650px; margin: 10px auto 50px; } #goal { font-size: 36px; text-align: center; color: #888; @media only screen and (max-width : 640px) { text-align: center; } } #glass { width: 100%; height: 20px; background: #c7c7c7; border-radius: 10px; float: left; overflow: hidden; } #progress { float: left; width: 0...

  • Rebuilding the PSF - Q4 2020 Fundraiser

    ...return; } var days = Math.floor(distance / _day); document.getElementById(id).innerHTML = days; } showRemaining(); } function addCommas(nStr) { nStr += ''; var x = nStr.split('.'); var x1 = x[0]; var x2 = x.length > 1 ? '.' + x[1] : ''; var rgx = /(\d+)(\d{3})/; while (rgx.test(x1)) { x1 = x1.replace(rgx, '$1' + ',' + '$2'); } return x1 + x2; } var xmlhttp; ...

  • Release – Python 3.15.0a3

    Version: None

    Released: Dec. 16, 2025

    This is an early developer preview of Python 3.15 Major new features of the 3.15 series, compared to 3.14 Python 3.15 is still in development. This release, 3.15.0a3, is the third of seven planned alpha releases. Alpha releases are intended to make it easier to test the current state of …

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  • Python Software Foundation: Minutes of Board of Directors Meeting (December 10, 2002)

    ...return for the donation). Lemburg replied that the question has been forwarded to ShareIT pending an answer. Van Rossum suggested that the PSC get Chris Rourk's opinion on the ShareIT contract and the possible implications of using ShareIT for online fund raising. The motion to accept the ShareIT contract was postponed until after the legal review. 6. Contribution forms status report Nothing to report. 8. Adjournment There being no further business, the meeting was adjourned at 13:34 PM EST...

  • Python Software Foundation Public Records

    ...Returns and Financial Information The PSF is a United States 501(c)(3) public charity with a strong commitment to transparency and compliance. 2024 filings and related documents 2024 Annual Report 2024 990 To Come 2023 filings and related documents 2023 Annual Report 2023 990 2022 filings and related documents 2022 Annual Report 2022 990 2021 filings and related documents 2021 Annual Report 2021 990 2021 Audited Financial Statements 2020 filings and related documents 2020 Annual Re...

  • Release – Python 3.14.0a4

    Version: None

    Released: Jan. 14, 2025

    Hello, three dot fourteen dot zero alpha four! This is an early developer preview of Python 3.14 Major new features of the 3.14 series, compared to 3.13 Python 3.14 is still in development. This release, 3.14.0a4, is the fourth of seven planned alpha releases. Alpha releases are intended to make …

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  • PSF Sponsorship

    ...return, the PSF will officially acknowledge your donation via various methods appropriate to your sponsorship level, including your logo and link on the PSF sponsor page, and an official PSF Sponsor image to place on the sponsor's website. The PSF would not be able to operate without the generous financial support of our corporate sponsors. Sponsorship Levels Principal: $150,000/year Diamond: $70,000/year Platinum: $50,000/year Gold: $30,000/year Silver: $15,000/year Bronze: $5,000/year PSF Inf...

  • Release – Python 3.9.16

    Version: None

    Released: Dec. 6, 2022

    This is a security release of Python 3.9 Note: The release you're looking at is Python 3.9.16, 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 in this …

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  • Highlights: Python 2.5

    ...returned by the yield statement when the generator is resumed. throw takes an exception and causes the yield statement to raise the passed exception in the generator. close is used to terminate a generator. This turns generators into a form of coroutine and makes them even more powerful. Conditional expressions of the form (TrueValue if Condition else FalseValue) were added. import can use both relative and absolute imports when inside packages. Try/except/finally were changed so that it's now p...

  • Python Software Foundation: Minutes of Board of Directors Meeting (December 14, 2004)

    ...return. The main points of the letter will be: * proposer will do what the proposal states, * proposer will send regular progress reports to the PSF Grants Committee, and * payment will be made in installments. The proposals list deliverables and payment will be made in part up front and then after each deliverable is received. RESOLVED, that the PSF accepts the recommendation of the grants committee to execute the following three projects in 2005: 1. Brian Zimmer, Moving Jyth...

  • Python Success Stories

    ...returned to the Fishkill facility in 1997. At this time, I was charged with the task of redesigning the system architecture using modern technology, a project that was funded as a result of Y2K concerns. In the course of building the infrastructure for this architecture, I developed my own object-oriented interpreted programming language, dubbed Bridge Scripting Language (BSL), as a substitute for the original sequencing language. I wanted to preserve and expand the ability to easily make change...

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