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  • Pi-thon 2022 PSF Spring Fundraiser

    ...slice of the pi! We aren’t setting a specific target this year, because honestly it’s been really hard to predict what will be possible for people in general. We aren’t going to pretend anything is easy to forecast right now! But we’d love to have as many of you participate as you can, and bring us all a little extra hap-pi-ness. Your donation allows the PSF to continue to host PyCon US and provide scholarships, tutorials, sprints, and more; to send grants to Python events and projec...

  • What's new in Python 2.3

    ...slices - the standard sequence types (string, list etc.) now support extended slices. Cute: s[::-1] reverses a string. None - assignment to variables or attributes named None will now trigger a warning. In the future, None may become a keyword. New-style classes now allow assignment to __name__ and __bases__. Interned strings are no longer immortal. sys.setcheckinterval() - the default value for this feature has changed from 10 to 100, for faster execution of interleaving multiple threads (by...

  • Python Success Stories

    ...sliced by provider, location, and the number of days into the future for which the forecasts were predicting. In its first year, 2003, the system only gathered forecasts for 20 U.S. cities, or about 250,000 individual forecasts, so most of the data output was based on the raw scoring data. The aggregation engine was added once the system was scaled up to 800 cities, increasing the data stream by almost 4000%. In the first half of 2004, the system has already scored over 4 million forecasts, all ...

  • Release – Python 3.9.0

    Version: None

    Released: Oct. 5, 2020

    This is the stable release of Python 3.9.0 Note: The release you're looking at is Python 3.9.0, a legacy release. Python 3.11 is now the latest feature release series of Python 3. Get the latest release of 3.11.x here. Installer news This is the first version of Python to …

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  • Python Humor

    ...Slices Subject: Re: pass copy of list to function From: "Gordon McMillan" <@hypernet.com> To: Timo Schmitt <@mailhost.uni-koblenz.de>, python-list@cwi.nl Date: Thu, 12 Feb 1998 09:13:59 -0500 Timo asked: > how do i pass a copy of a list of a function? Use the Paranoia emoticon. list = ['blah', 'blah'] f(list[:]) This passes the "here's my desert, where's everyone elses?" slice. Python Block Delimited Notation Parsing Explained Subject: Ad...

  • A Journey to Python

    ...slice of time to selecting and editing recipes. I suspended the Nutshell work, took all my accumulated vacation from work, and then some. (I worked in Italy, accumulating vacation at Italian rates, but typically took amounts of vacation on more of an American scale. So, after a few years on the job, I had QUITE a lot of accumulated vacation. And in Italy, by law, you never "lose" vacation days you're due.) I threw myself into the task; the first edition of the Cookbook emerged fro...

  • Python 1.6

    ...slice indexes. String formatting (s % args) has a new formatting option, '%r', which acts like '%s' but inserts repr(arg) instead of str(arg). (Not yet in alpha 1.) Greg Ward's "distutils" package is included: this will make installing, building and distributing third party packages much simpler. There's now special syntax that you can use instead of the apply() function. f(*args, **kwds) is equivalent to apply(f, args, kwds). You can also use variations f(a1, a2, *args, **kwds) ...

  • Computer Programming for Everybody

    ...slice could be performed with respect to certain abstraction boundaries and aspects of the code. A program slice that presents the functional aspect of a program without including concurrency-specific code may be useful for understanding the program structure. (Of course, the concurrency-specific code is important to understand, but may be a separate concern.) A third area of work is one automatic generation of scripting language interfaces to low-level code such as C, C++, or Java. The S...

  • Notes

    ...slice range was all inclusive. Unicode objects in sys.path are no longer ignored but treated as directory names. Fixed string.startswith and string.endswith builtin methods so they accept negative indices. [SF bug 493951] Fixed a bug with a continue inside a try block and a yield in the finally clause. [SF bug 567538] Most builtin sequences now support "extended slices", i.e. slices with a third "stride" parameter. For example, "hello world"[::-1] gives "...

  • Python 1.6.1

    ...slice indexes. String formatting (s % args) has a new formatting option, '%r', which acts like '%s' but inserts repr(arg) instead of str(arg). (Not yet in alpha 1.) Greg Ward's "distutils" package is included: this will make installing, building and distributing third party packages much simpler. There's now special syntax that you can use instead of the apply() function. f(*args, **kwds) is equivalent to apply(f, args, kwds). You can also use variations f(a1, a2, *args, **kwds) and y...

  • What's New In Python 3.0

    ...slice assignment and comparison (equality and inequality) have been added. Also, the tolist() method has been implemented, but only for byte buffers. Endly, the API has been updated to return bytes objects wherever it used to return bytearrays. Issue #3560: clean up the new C PyMemoryView API so that naming is internally consistent; add macros PyMemoryView_GET_BASE() and PyMemoryView_GET_BUFFER() to access useful properties of a memory views without relying on a particular implementation; remov...

  • Notes

    ...slice object, so these recomputed every day or month name each time they were indexed. This is much slower than necessary in the usual case, when the index is just an integer. In that case, only the single spelling needed is recomputed now; and, when the index is a slice object, only the spellings needed by the slice are recomputed now. Patch 1061679: Added __all__ to pickletools.py. Build Bug 1034277 / Patch 1035255: Remove compilation of core against CoreServices and CoreFoundation on OS...

  • Python 2.4.1 - Release Notes

    ...slice object, so these recomputed every day or month name each time they were indexed. This is much slower than necessary in the usual case, when the index is just an integer. In that case, only the single spelling needed is recomputed now; and, when the index is a slice object, only the spellings needed by the slice are recomputed now. Patch 1061679: Added __all__ to pickletools.py. Build Bug 1034277 / Patch 1035255: Remove compilation of core against CoreServices and CoreFoundation on OS...

  • Notes

    ...slice of a mmap [ #438050 ] configure doesn't look for poll.h in sys [ #437487 ] 2.1 build on Solaris fails if CC is set [ #441527 ] unixccompiler preprocessor broken What's New in Python 2.1.1c1 ? Python 2.1.1 comes with the new, GPL-compatible PSF licence. Several insecurities in dict comparison as well as a scoping bug, that could lead to the Python interpreter crashing were fixed. Python should compile and run out of the box using the Borland C compiler (under Windows), thanks to Steph...

  • Parade of the PEPs

    ...slices in the new Numeric acts the same as in the old version, and don't make copies as I mistakenly thought.) Quoting Perry Greenfield: [...] the new version is becoming more and more backward- compatible. In fact, the major differences that remain are: difference coercion rules when scalars are combined with arrays. At the scientific Python BoF, there was consensus that this change was a Good Thing. Types are represented by type objects rather than single charac...

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