Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Christopher Reimer Newsgroups: comp.lang.python Subject: Re: Differences between Class(Object) and Class(Dict) for dictionary usage? Date: Wed, 27 Apr 2016 18:21:05 -0700 Lines: 13 Message-ID: References: <5720357B.4060009@icloud.com> <57204EA6.7060007@stoneleaf.us> <57216581.1070603@icloud.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de c/62q/EPWZJY37D62fe/xAuX9jJiGQQp81WxZb3sJHQQ== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.089 X-Spam-Evidence: '*H*': 0.82; '*S*': 0.00; 'dict': 0.09; 'subject:Object': 0.09; 'subject: \n ': 0.15; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:between': 0.16; 'subject:usage': 0.16; 'wrote:': 0.16; 'class,': 0.22; 'keys': 0.22; 'am,': 0.23; 'header:User-Agent:1': 0.26; 'chris': 0.26; 'received:17': 0.27; '"do': 0.29; 'such.': 0.29; 'probably': 0.31; 'received:10.0.0': 0.32; 'subject:) ': 0.32; 'useful': 0.33; 'received:10.0': 0.34; 'should': 0.36; 'to:addr:python-list': 0.36; 'subject:?': 0.36; 'subject:: ': 0.37; 'received:10': 0.37; 'really': 0.37; 'say': 0.37; 'thank': 0.38; 'to:addr:python.org': 0.40; 'some': 0.40; 'questions': 0.40; 'header:MIME-version:1': 0.60; 'your': 0.60; 'no.': 0.62; 'charset:windows-1252': 0.62; 'more': 0.63; 'great': 0.63; 'yourself': 0.73; 'header:In-reply-to:1': 0.84; 'subject:Class': 0.91 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-04-27_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 clxscore=1015 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1510270003 definitions=main-1604280016 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 In-reply-to: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=4d515a; t=1461806466; bh=6br0M15PZItJ4fIGiZZBTUAF3Y/4DbyqT3kKxXcqRi4=; h=Subject:To:From:Message-id:Date:MIME-version:Content-type; b=NtLdoHie8cum+1nTwRjCtBp0rqK/HHeUEW5UguNyGg8c5XBsBkM6U3EFNz4KEDsOp JiAYpT4/m0zdxU2J+CX506iEnc82YKwefCbmLz3Wai8cOcZroXoYUcVolFEesoPcZY SYZNH+XN9LjhfF/2RfDbJlYu3fesKmWp6TW+yc4LfnDD5Co7ej/937PEJP3ah1ZT6I DEW5X+g1RA9CKjA9tUIYp8ZmgAsjGfG7T4Ex47p3/q8HGeip10NfNCg74KVVyL+3s8 caYeu4d4TPQ1jWs1ooWY3dXQ1DE51qU+VvHvwB84oMikvc/Ew28Lh+CsjZTXWKEeCL KgYttPPOpBtBg== X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <57216581.1070603@icloud.com> X-Mailman-Original-References: <5720357B.4060009@icloud.com> <57204EA6.7060007@stoneleaf.us> Xref: csiph.com comp.lang.python:107738 On 4/27/2016 7:24 AM, Ian Kelly wrote: > Some other great questions to ask yourself are "do I really want > len(my_object) to return the number of items in this dict" and "do I > really want list(my_object) to return all the keys in this dict"? If > the answer to all those is yes, then it's probably fair to say that > your object is-a dict and should be modeled as such. These questions are more useful for me to consider. For my chess piece base class, the answer is no. Thank you, Chris R.