Mailman 3 January 2004 - Python-Dev

PEP 326 (quick location possibility)
by Josiah Carlson Jan. 30, 2004

Jan. 30, 2004

What does everyone think of the following? A few people have suggested that the Max and Min objects be available as the result of calls to max() and min(), this would solve the location and name problem, and shouldn't break any old code. Current behavior of min and max: 1. without arguments raises a TypeError 2. with a single non-sequence argument raises a TypeError 3. with an empty sequence as an argument raises a ValueError 4. with one argument that is a non-empty sequence returns the min or max of the sequence 5. with more than one argument returns the min or max of *args If we assume that no one is calling min or max without arguments in order to raise a TypeError (which seems like a reasonable assumption), then replacing the TypeError exception for behavior 1 with the following seems reasonable: min() -> Min max() -> Max It is also easy to wrap the current min/max functions in order to return the proper objects. _min = min def min(*args): if args: return _min(*args) return Min If such behavior is desired, it would probably make sense to alter the behavior of min_max() in bltinmodule.c to return pointers to the objects: (line 1094-1095 replaced with what is below) else if (!PyArg_UnpackTuple(args, (op==Py_LT) ? "min" : "max", 1, 1, &v)) { v = (op=Py_LT) ? PyMinObject : PyMaxObject; Py_INCREF(v); return v } By extension, it would make sense to alter the objects Min and Max to have their string representation be 'min()' and 'max()' respectively. The above 5-line modification coupled with the 5 line modification to PyObject_Compare (as posted in my previous post to python-dev which shows the replacement of line 758 in object.c with 5 others), and a minimal C implementation of the Min and Max objects (hopefully less than ~50 lines), could bring the conceptual Min and Max objects into reality. They would also invariably be smaller or larger than all other objects, due to modifications to the interpreter. They would additionally not pollute any namespace (only being accessable by min() or max()) , and be virutally self-documenting (min() returns global minimum, max() returns global maximum). What does everyone think? Thanks for reading, - Josiah 5-line replace of 758 in object.c included below for reference: if (v == PyMinObject || w == PyMaxObject) return -1; else if (v == PyMaxObject || w == PyMinObject) return 1; else if (Py_EnterRecursiveCall(" in cmp"))

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Raymond's next task is...
by Skip Montanaro Jan. 29, 2004

Jan. 29, 2004

Raymond seems lately to like converting slow Python modules into peppy extension modules. My nomination for his next endeavor is Lib/sre*.py, especially sre_compile.py and sre_parse.py. <wink> Skip

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RE: [Python-checkins] python/dist/src/Doc Makefile.deps, 1.115, 1.116
by Raymond Hettinger Jan. 29, 2004

Jan. 29, 2004

> Log Message: > update dependency information Thanks. Raymond

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Email non recapitata / Email not delivered
by WWMind Autoresponder Jan. 29, 2004

Jan. 29, 2004

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Uw mail naar een Picolo! mailinglist is niet verstuurd.
by Picolo! Automailer Jan. 29, 2004

Jan. 29, 2004

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Content violation
by Symantec_AntiVirus_for_SMTP_Gateways＠pasco.com Jan. 29, 2004

Jan. 29, 2004

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Returned mail: see transcript for details
by Mail Delivery Subsystem Jan. 29, 2004

Jan. 29, 2004

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Virus Alert
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Jan. 29, 2004

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Your mail to matt@netapp.com
by Auto-Reply Daemon for matt Jan. 29, 2004

Jan. 29, 2004

This is either an invalid user name or the person you have sent mail to, 'matt', is no longer employed with Network Appliance. Please take a moment to check your mailing list and update if necessary. Regrettably, we have no forwarding information for 'matt'. Your message has NOT been forwarded. Please update your records and try again. Please Contact HELPDESK at X6466 for any inquiries. Thank you, IT Department [the body of your message is below] >From python-dev(a)python.org Wed Jan 28 16:07:07 2004 >Received: from psmtp.com (frejya [10.57.157.119]) > by frejya.corp.netapp.com (8.12.9/8.12.9/NTAP-1.5) with SMTP id i0T073Di016124 > for <matt(a)corp.netapp.com>; Wed, 28 Jan 2004 16:07:07 -0800 (PST) >Received: from source ([10.254.252.22]) by frejya ([10.57.157.119]) with SMTP; > Wed, 28 Jan 2004 16:07:03 PST >Received: from python.org (cslab-07.union.edu [149.106.62.207]) > by mx02.netapp.com (8.12.10/8.12.10/NTAP-1.4) with ESMTP id i0T072Bo017306 > for <matt(a)netapp.com>; Wed, 28 Jan 2004 16:07:02 -0800 (PST) >Message-Id: <200401290007.i0T072Bo017306(a)mx02.netapp.com> >From: python-dev(a)python.org >To: matt(a)netapp.com >Subject: Hello >Date: Wed, 28 Jan 2004 19:06:58 -0500 >MIME-Version: 1.0 >Content-Type: multipart/mixed; > boundary="----=_NextPart_000_0010_50A90073.2A6F9AC8" >X-Priority: 3 >X-MSMail-Priority: Normal >X-pstn-levels: (C:80.0762 M:99.4056 P:95.9108 R:95.9108 S: 7.2366 ) >X-pstn-settings: 3 (1.0000:1.0000) pmCr >X-pstn-addresses: from <python-dev(a)python.org> > >This is a multi-part message in MIME format. > >------=_NextPart_000_0010_50A90073.2A6F9AC8 >Content-Type: text/plain; charset=us-ascii >Content-Transfer-Encoding: 7bit > >------------------ Virus Warning Message (on frejya) > >Found virus WORM_MIMAIL.R in file body.pif (in body.zip) >The file is deleted. > >If you have questions, please contact helpdesk(a)netapp.com. > >--------------------------------------------------------- > >------=_NextPart_000_0010_50A90073.2A6F9AC8 >Content-Type: text/plain; > charset="Windows-1252" >Content-Transfer-Encoding: 7bit > >The message cannot be represented in 7-bit ASCII encoding and has been sent as a binary attachment. > > >------=_NextPart_000_0010_50A90073.2A6F9AC8 >Content-Type: text/plain; charset=us-ascii >Content-Transfer-Encoding: 7bit > > >------------------ Virus Warning Message (on frejya) > >body.zip is removed from here because it contains a virus. > >--------------------------------------------------------- >------=_NextPart_000_0010_50A90073.2A6F9AC8-- > >

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