Re: Thoughts on python classes to represent an ebook reader

Path	csiph.com!usenet.pasdenom.info!gegeweb.org!usenet-fr.net!nerim.net!novso.com!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path	<python-python-list@m.gmane.org>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.002
X-Spam-Evidence	'H': 1.00; 'S': 0.00; 'programmer': 0.03; 'classes,': 0.05; '(except': 0.07; '(of': 0.07; 'attributes': 0.09; 'oop': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'python': 0.11; 'books': 0.15; 'class:': 0.16; 'example?': 0.16; 'help...': 0.16; 'implies': 0.16; 'list),': 0.16; 'message-id:@4ax.com': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:reader': 0.16; 'subject:python': 0.16; '(not': 0.18; 'wed,': 0.18; 'code,': 0.22; '(in': 0.22; 'candidates': 0.23; 'url:home': 0.24; 'math': 0.24; 'options': 0.25; 'class.': 0.26; 'mention': 0.26; 'task': 0.26; 'header:X-Complaints-To:1': 0.27; "doesn't": 0.30; 'purchased': 0.30; 'gives': 0.31; 'this.': 0.32; 'stuff': 0.32; 'reader': 0.33; 'problem': 0.35; 'classes': 0.35; 'but': 0.35; 'there': 0.35; 'really': 0.36; 'whilst': 0.36; 'method': 0.36; 'charset:us-ascii': 0.36; 'possible': 0.36; 'should': 0.36; 'too': 0.37; 'list': 0.37; 'starting': 0.37; 'focused': 0.38; 'to:addr:python-list': 0.38; 'previous': 0.38; 'rather': 0.38; '(from': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'users': 0.40; 'read': 0.60; 'hope': 0.61; 'identify': 0.61; 'new': 0.61; 'become': 0.64; 'life': 0.66; 'here': 0.66; 'experience.': 0.67; 'books.': 0.84; 'treating': 0.84; 'same,': 0.91; 'received:108': 0.93
X-Injected-Via-Gmane	http://gmane.org/
To	python-list@python.org
From	Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject	Re: Thoughts on python classes to represent an ebook reader
Date	Wed, 01 Oct 2014 22:33:05 -0400
Organization	IISS Elusive Unicorn
References	<8cbce703-968f-4474-a013-063d7844c22a@googlegroups.com>
Mime-Version	1.0
Content-Type	text/plain; charset=us-ascii
Content-Transfer-Encoding	7bit
X-Gmane-NNTP-Posting-Host	adsl-108-79-217-224.dsl.klmzmi.sbcglobal.net
X-Newsreader	Forte Agent 6.00/32.1186
X-No-Archive	YES
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.15
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>
Newsgroups	comp.lang.python
Message-ID	<mailman.14537.1412217188.18130.python-list@python.org> (permalink)
Lines	47
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1412217188 news.xs4all.nl 2918 [2001:888:2000:d::a6]:59395
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:78575

Show key headers only | View raw

On Wed, 1 Oct 2014 01:14:56 -0700 (PDT), math math <mathematisch@gmail.com>
declaimed the following:

>Hi,
>
>I hope there are people here with strong OOP experience.
>
	Whilst my previous life inflicted a few OOAD classes upon me, that life
and my current one are too focused upon non-OO legacy stuff for the OOAD to
be of help...

	However...

>Which classes would an object-oriented python programmer create for the design of a e-book reader for example? I am not really interested in the code, just the OOP classes that would come to one's mind for a task like this.
>
>It should allow users to buy new e-books, view their list of purchased books and read the books.
>

	A classical means of OOAD is to take the problem description and
identify the /nouns/... Nouns are candidates for object classes (not all
will become classes, but they are a starting point).

Treating "e-book" and "book" as the same, your rather simplistic problem
description gives me

	book
	list (of books)
	(implied) reader-device

	/Verbs/ are candidates for methods... You only have one method for each
class:

	book.read
	list.view
	reader-device.buy

	/Adjectives/ indicate possible attributes of the class. Your one-liner
doesn't have any (except "purchased", which implies some way to get a list
of "unpurchased" books).

	A fuller problem description will likely mention a "shop", "filtering"
(search), "selecting" (from the list), "paging" (in the reader), setting
options (font/size/color scheme).
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

Back to comp.lang.python | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Thoughts on python classes to represent an ebook reader math math <mathematisch@gmail.com> - 2014-10-01 01:14 -0700
  Re: Thoughts on python classes to represent an ebook reader Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2014-10-01 10:48 +0200
  Re: Thoughts on python classes to represent an ebook reader Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-01 22:33 -0400

csiph-web