Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: Chris Angelico <rosuav@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: Clean Singleton Docstrings
Date: Sun, 17 Jul 2016 07:02:14 +1000
Lines: 18
Message-ID: <mailman.40.1468702937.2307.python-list@python.org>
References: <nlmpl5$9l4$1@dont-email.me> <nlnl9m$j3b$1@ger.gmane.org> <mailman.137.1467963521.2295.python-list@python.org> <df9aaf24-394f-451a-9518-7e3a8dc67318@googlegroups.com> <nm6kbb$t6b$1@ger.gmane.org> <mailman.51.1468454075.21009.python-list@python.org> <7046c74e-e5ea-4dde-8847-8c556756a563@googlegroups.com> <5789B601.9000604@stoneleaf.us> <mailman.26.1468642801.2307.python-list@python.org> <9d2a0934-bf26-42a8-9bb2-e4e75b2d2ad3@googlegroups.com> <CAPTjJmq+VKdu7x_nzfP8fb=0EiAqWJO6_qKNsabQSnbBStyMsA@mail.gmail.com> <1468652038.1427719.667878897.460955C0@webmail.messagingengine.com> <CAPTjJmpQA5-z_kUmNzE3UZN+EchxyT3ceRWap7xnKU9z15A+YA@mail.gmail.com> <1468692272.2410242.668163177.52CA7567@webmail.messagingengine.com> <CAPTjJmqF9fi=876J_-cRtV8ogWFZuqjoC85UT804Ug10hYpVXQ@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
X-Trace: news.uni-berlin.de 0VjaiF+0jfAujcjq6R6HoQFt404woqFpinYbrRJ69whg==
Return-Path: <rosuav@gmail.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.007
X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; '16,': 0.03; 'nicely': 0.07; 'cc:addr:python-list': 0.09; 'semantics': 0.09; 'stored': 0.10; '2016': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:Singleton': 0.16; 'wrote:': 0.16; 'cc:2**0': 0.20; 'cc:addr:python.org': 0.20; 'fraction': 0.22; 'am,': 0.23; '(or': 0.23; 'sat,': 0.23; 'header:In-Reply-To:1': 0.24; "doesn't": 0.26; 'chris': 0.26; 'message-id:@mail.gmail.com': 0.27; 'decimal': 0.29; 'getting': 0.33; 'point': 0.33; 'class': 0.33; 'case,': 0.34; 'received:google.com': 0.35; 'should': 0.36; 'subject:: ': 0.37; 'really': 0.37; 'format': 0.39; 'different': 0.63; 'jul': 0.72; 'power': 0.72; 'chrisa': 0.84; 'to:none': 0.91; 'choose.': 0.91
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:cc; bh=YD1jsFYvk1p/aIfclLaSYiXu7L7brDwkh2xMCa7AT44=; b=WfvSBcMwrOXrf4mv2Dy6IUgvji7m9yKdbdzW8HCf064cV3ti5Tsrrx4Y3FggMhcRzh AnqACcF5HkMBe8B3Q+gzL3Y511+Zxg/kiL46Oqg3UoCMdHdoeCfQavR5vY/jfyxzMi3J sstHWqzAihVwVRMJPGTRu8Y4cTCyRQgSFZPQEeCir5Ue5y2WR7Th1cdSHctl7KyeUNzW UER4Z3L+KEFaM7CRZrATkzYLEDdgtPadaQS2eJpZLT9yywMA8Y5eW09FCsepYOpIyHed AR9q/Wx6kynZwGmIYhRK7nolrEFjpPqnlLqayty5+5VfWa1ewLUQKchQBXzk+NYcxPMv rIkg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:cc; bh=YD1jsFYvk1p/aIfclLaSYiXu7L7brDwkh2xMCa7AT44=; b=eGRQx5MOhSc7e3IkaMNU1MoDuMEVbdbww8fVQNYxNtfvHPw81iRfAMu8xMSRbLK2D3 c+kPhrFL+hFpI3cJQbM652Tf8CneJGyQXgCMupsOJm9pHr2RlF76IayYd2Fm1JqzpoO7 mo9u5MofNXmTCzbLw0hCscOwOSZjwG2XtS2MqebsPEmYTwYehMYo/qnLH9VTTlAov+zb aMuG6DzuZ1OoMWZHCvMErGnhrY4Et+NpLC5uZS9LDaXAEWQ6LAcOBz18xMad/2jeDuaF qQRFc8kJrCYyuVkDzWqpDc52CUWKyCmBqJLdG7Z5hGCZRgxNfNNVjazZzX5s2x/aLD1T nLYw==
X-Gm-Message-State: ALyK8tI3v2AkENQW1YJS8pnfjgNn/FVv1RVQh99jgxbSWyIc2/2ZGktNQHQ/K2zOTZSNK5oQBadeRO6J2Sr5AA==
X-Received: by 10.194.169.98 with SMTP id ad2mr5697438wjc.117.1468702934855; Sat, 16 Jul 2016 14:02:14 -0700 (PDT)
In-Reply-To: <1468692272.2410242.668163177.52CA7567@webmail.messagingengine.com>
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
X-Mailman-Original-Message-ID: <CAPTjJmqF9fi=876J_-cRtV8ogWFZuqjoC85UT804Ug10hYpVXQ@mail.gmail.com>
X-Mailman-Original-References: <nlmpl5$9l4$1@dont-email.me> <nlnl9m$j3b$1@ger.gmane.org> <mailman.137.1467963521.2295.python-list@python.org> <df9aaf24-394f-451a-9518-7e3a8dc67318@googlegroups.com> <nm6kbb$t6b$1@ger.gmane.org> <mailman.51.1468454075.21009.python-list@python.org> <7046c74e-e5ea-4dde-8847-8c556756a563@googlegroups.com> <5789B601.9000604@stoneleaf.us> <mailman.26.1468642801.2307.python-list@python.org> <9d2a0934-bf26-42a8-9bb2-e4e75b2d2ad3@googlegroups.com> <CAPTjJmq+VKdu7x_nzfP8fb=0EiAqWJO6_qKNsabQSnbBStyMsA@mail.gmail.com> <1468652038.1427719.667878897.460955C0@webmail.messagingengine.com> <CAPTjJmpQA5-z_kUmNzE3UZN+EchxyT3ceRWap7xnKU9z15A+YA@mail.gmail.com> <1468692272.2410242.668163177.52CA7567@webmail.messagingengine.com>
Xref: csiph.com comp.lang.python:111522

On Sun, Jul 17, 2016 at 4:04 AM, Random832 <random832@fastmail.com> wrote:
> On Sat, Jul 16, 2016, at 03:27, Chris Angelico wrote:
>> Will an "Exact" non-integer be stored as Decimal or
>> Fraction? How do you know? They have vastly different semantics, and
>> you should be able to choose.
>
> Er, the point is for them to _not_ have different semantics. A decimal
> storage format would simply be an optimization for a fraction whose
> denominator is a power of 10 (or of 2 and 5)
>
> The semantics of the current Decimal class are those of an inexact
> number.

In that case, an 'Exact' non-integer will have appalling performance -
fractions.Fraction doesn't really work all that nicely when the
numbers start getting huge.

ChrisA