Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!news2.arglkargh.de!news.wiretrip.org!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path: <prvs=085ab6f2d=jeanmichel@sequans.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; 'subject:Python': 0.04; 'instance': 0.05; 'def': 0.13; 'wrote:': 0.14; 'chad': 0.16; 'did,': 0.16; 'received:192.168.200': 0.16; 'subject:Classes': 0.16; 'cc:no real name:2**0': 0.20; 'cc:2**0': 0.20; 'header:In- Reply-To:1': 0.22; 'subject:question': 0.22; 'cc:addr:python- list': 0.22; 'pass': 0.27; 'class': 0.29; 'cc:addr:python.org': 0.31; 'created': 0.33; 'test': 0.33; 'received:192': 0.34; 'print': 0.35; 'header:User-Agent:1': 0.35; 'received:192.168': 0.37; 'how': 0.39; 'skip:h 20': 0.60; 'subject:about': 0.66
X-IronPort-AV: E=Sophos;i="4.64,252,1301868000"; d="scan'208";a="1274521"
X-Virus-Scanned: amavisd-new at zimbra.sequans.com
Date: Thu, 21 Apr 2011 18:30:14 +0200
From: Jean-Michel Pichavant <jeanmichel@sequans.com>
User-Agent: Mozilla-Thunderbird 2.0.0.24 (X11/20100328)
MIME-Version: 1.0
To: chad <cdalten@gmail.com>
Subject: Re: A question about Python Classes
References: <2219ee53-e8aa-4ac4-839f-014c3d1b1914@a19g2000prj.googlegroups.com>
In-Reply-To: <2219ee53-e8aa-4ac4-839f-014c3d1b1914@a19g2000prj.googlegroups.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: python-list@python.org
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <http://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: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.711.1303403421.9059.python-list@python.org>
Lines: 31
NNTP-Posting-Host: 82.94.164.166
X-Trace: 1303403421 news.xs4all.nl 65870 [::ffff:82.94.164.166]:51893
X-Complaints-To: abuse@xs4all.nl
Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:3809

chad wrote:
> Let's say I have the following....
>
> class BaseHandler:
>     def foo(self):
>         print "Hello"
>
> class HomeHandler(BaseHandler):
>     pass
>
>
> Then I do the following...
>
> test = HomeHandler()
> test.foo()
>
> How can HomeHandler call foo() when I never created an instance of
> BaseHandler?
>
> Chad
>   
you did, test is an instance of BaseHandler.

 > isinstance(test, HomeHandler)
< True

 > isinstance(test, BaseHandler)
< True

JM