Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: MRAB <python@mrabarnett.plus.com>
Newsgroups: comp.lang.python
Subject: Re: learning python. learning defining functions . need help
Date: Fri, 22 Jul 2016 19:36:56 +0100
Lines: 11
Message-ID: <mailman.62.1469212620.22221.python-list@python.org>
References: <432aeb03-ea14-4ece-8e5b-a7521cf12b84@googlegroups.com> <ji44pbpbaj6olkqcq832ivm7q7gl5d1aca@4ax.com> <CAPTjJmq6nnqp3434HNkxZLPm-igt-vk76u1GZVsr7euhWd4f8Q@mail.gmail.com> <CAO1D73GxUMSwRZvggewY8o-3GLpSMZHAyGD18by1dy-CqyGhpw@mail.gmail.com> <20160722114118.6a809d29@imp> <3379130e-1205-9f02-61c6-e30aee47435f@mrabarnett.plus.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: news.uni-berlin.de EgfICGzKetLqew2vVubNyACXwqvAx1L7dIJli6XPddRA==
Return-Path: <python@mrabarnett.plus.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.006
X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'none,': 0.05; 'subject:help': 0.07; 'dict': 0.09; 'subclass': 0.09; '2016': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'justin': 0.16; 'message- id:@mrabarnett.plus.com': 0.16; 'received:192.168.1.4': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:python.': 0.16; 'wrote:': 0.16; 'subject:need': 0.18; 'handles': 0.20; 'header:In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'checking': 0.27; 'fri,': 0.27; 'subject:learning': 0.29; 'classes': 0.30; '-0700': 0.33; 'could': 0.35; 'replace': 0.35; "isn't": 0.35; 'stock': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:192': 0.39; 'well.': 0.40; 'to:addr:python.org': 0.40; 'subject:. ': 0.67; 'jul': 0.72; 'dict,': 0.84; 'subject: . ': 0.84; 'walters': 0.84
X-CM-Score: 0.00
X-CNFS-Analysis: v=2.2 cv=dMLko6Rb c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=IkcTkHD0fZMA:10 a=pGLkceISAAAA:8 a=S8vV_Mvqr_kS00Pp6hIA:9 a=FgcEZ7H6pukA:10 a=6kGIvZw6iX1k4Y-7sg4_:22
X-AUTH: mrabarnett@:2500
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0
In-Reply-To: <20160722114118.6a809d29@imp>
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: <3379130e-1205-9f02-61c6-e30aee47435f@mrabarnett.plus.com>
X-Mailman-Original-References: <432aeb03-ea14-4ece-8e5b-a7521cf12b84@googlegroups.com> <ji44pbpbaj6olkqcq832ivm7q7gl5d1aca@4ax.com> <CAPTjJmq6nnqp3434HNkxZLPm-igt-vk76u1GZVsr7euhWd4f8Q@mail.gmail.com> <CAO1D73GxUMSwRZvggewY8o-3GLpSMZHAyGD18by1dy-CqyGhpw@mail.gmail.com> <20160722114118.6a809d29@imp>
Xref: csiph.com comp.lang.python:111770

On 2016-07-22 16:41, D'Arcy J.M. Cain wrote:
> On Fri, 22 Jul 2016 08:21:17 -0700
> justin walters <walters.justin01@gmail.com> wrote:
>> You could also replace that line with:
>>
>>     if stock is None or type(stock) != dict:
>
> Use isinstance().  That handles classes that subclass dict as well.
>
If you're checking that it's a dict, there's no need to check whether 
it's None, because None isn't a dict either!