Re: Looking for a good introduction to object oriented programming with Python

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Date	2012-08-08 07:57 +1000
Subject	Re: Looking for a good introduction to object oriented programming with Python
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.3069.1344376675.4697.python-list@python.org> (permalink)

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On Wed, Aug 8, 2012 at 3:00 AM, lipska the kat <lipskathekat@yahoo.co.uk> wrote:
> I'm still undecided over the whole 'User' thing actually, I don't think I
> can see a time when I will have a User Class in one of my systems but as I
> don't want to get 'dogmatic' about this I remain open to any ideas that
> might include such a Class.
>
> Person however is an entirely different matter and will never appear in my
> systems in any way shape or form ...this is not dogma, it's a fact.

This makes little sense to my mind. If you can have a "class User:",
why can you not have a "class Person:" ?

Now, that said, I can't remember the last time I actually had a class
called "Person" in anything other than a demo. But that's merely
because of terminology; I've had classes representing human beings,
but named according to what part these people play in the system
(Customer, Employee (haven't done that one, actually, but there's no
reason not to), User, Etcetera, Etcetera, Etcetera... is an Etceterer
someone who practices Etcetery?), and these classes are as
well-defined as any others.

Perhaps it would help to think about these things not as turning a
person into an entity, but as "retaining the data related to a
Person". The Person class details what data you store about a person,
a Person instance stores that data about one particular person. This
works for other things; a QueueEntry isn't actually standing in queue,
but it holds the data you store about the thing that is.

Or maybe that doesn't help, in which case just ignore it.

ChrisA

Thread

[newbie] Looking for a good introduction to object oriented programming with Python Jean Dubois <jeandubois314@gmail.com> - 2012-08-04 08:49 -0700
  Re: [newbie] Looking for a good introduction to object oriented programming with Python shearichard@gmail.com - 2012-08-04 17:11 -0700
    Re: Looking for a good introduction to object oriented programming with Python Jean Dubois <jeandubois314@gmail.com> - 2012-08-05 05:38 -0700
    Re: Looking for a good introduction to object oriented programming with Python Jean Dubois <jeandubois314@gmail.com> - 2012-08-05 11:04 -0700
      Re: Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-05 19:28 +0100
        Re: Looking for a good introduction to object oriented programming with Python Jean Dubois <jeandubois314@gmail.com> - 2012-08-06 07:56 -0700
          Re: Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-06 17:17 +0100
            Re: Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-07 01:12 +0000
              Re: Looking for a good introduction to object oriented programming with Python Ben Finney <ben+python@benfinney.id.au> - 2012-08-07 11:23 +1000
              Re: Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-07 08:49 +0100
      Re: Looking for a good introduction to object oriented programming with Python Roy Smith <roy@panix.com> - 2012-08-05 14:39 -0400
      Re: Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-05 19:53 +0100
      Re: Looking for a good introduction to object oriented programming with Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-05 18:45 -0400
        Re: Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-05 22:51 +0000
          Re: Looking for a good introduction to object oriented programming with Python Roy Smith <roy@panix.com> - 2012-08-05 19:12 -0400
            Re: Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-06 00:30 +0100
            Re: Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-06 00:27 +0000
              Re: Looking for a good introduction to object oriented programming with Python Dan Sommers <dan@tombstonezero.net> - 2012-08-05 17:50 -0700
              Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-06 08:48 +0100
              Re: Looking for a good introduction to object oriented programming with Python DJC <djc@news.invalid> - 2012-08-06 11:20 +0200
            Re: Looking for a good introduction to object oriented programming with Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-05 20:57 -0400
          Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-06 08:43 +0100
            Re: Looking for a good introduction to object oriented programming with Python Roy Smith <roy@panix.com> - 2012-08-06 09:16 -0400
        Re: Looking for a good introduction to object oriented programming with Python Wolfgang Strobl <news4@mystrobl.de> - 2012-08-06 08:18 +0200
  Re: [newbie] Looking for a good introduction to object oriented programming with Python dncarac@gmail.com - 2012-08-05 11:59 -0700
  Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-05 20:46 +0100
    Re: [newbie] Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-05 23:11 +0100
      Re: [newbie] Looking for a good introduction to object oriented programming with Python Roy Smith <roy@panix.com> - 2012-08-05 18:53 -0400
    Re: [newbie] Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-06 00:22 +0000
      Re: [newbie] Looking for a good introduction to object oriented programming with Python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-06 02:02 +0100
      Re: [newbie] Looking for a good introduction to object oriented programming with Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-05 21:14 -0400
        Re: [newbie] Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-06 06:08 +0000
          Re: [newbie] Looking for a good introduction to object oriented programming with Python Paul Rubin <no.email@nospam.invalid> - 2012-08-06 00:25 -0700
      Re: Looking for a good introduction to object oriented programming with Python alex23 <wuwei23@gmail.com> - 2012-08-05 19:44 -0700
        Re: Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-07 19:02 +0000
          Re: Looking for a good introduction to object oriented programming with Python Terry Reedy <tjreedy@udel.edu> - 2012-08-07 18:37 -0400
          Re: Looking for a good introduction to object oriented programming with Python alex23 <wuwei23@gmail.com> - 2012-08-07 17:07 -0700
            Re: Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-08 02:14 +0000
              Re: Looking for a good introduction to object oriented programming with Python Chris Angelico <rosuav@gmail.com> - 2012-08-08 12:24 +1000
              Re: Looking for a good introduction to object oriented programming with Python alex23 <wuwei23@gmail.com> - 2012-08-07 20:20 -0700
      Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-06 09:55 +0100
        Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-06 10:24 +0100
          Re: [newbie] Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-07 05:35 +0000
            Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-07 09:16 +0100
        Re: [newbie] Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-07 05:19 +0000
          Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-07 10:19 +0100
            Re: [newbie] Looking for a good introduction to object oriented programming with Python Ben Finney <ben+python@benfinney.id.au> - 2012-08-07 23:12 +1000
              Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-07 15:13 +0100
            Re: [newbie] Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-07 14:14 +0000
              Re: [newbie] Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-07 15:34 +0100
                Re: Looking for a good introduction to object oriented programming with Python rusi <rustompmody@gmail.com> - 2012-08-07 08:04 -0700
                Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-07 18:00 +0100
                Re: Looking for a good introduction to object oriented programming with Python Chris Angelico <rosuav@gmail.com> - 2012-08-08 07:57 +1000
                Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-08 10:51 +0100
                Re: Looking for a good introduction to object oriented programming with Python rusi <rustompmody@gmail.com> - 2012-08-08 09:27 -0700
                Re: Looking for a good introduction to object oriented programming with Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-08 17:28 +0000
                Re: Looking for a good introduction to object oriented programming with Python Chris Angelico <rosuav@gmail.com> - 2012-08-09 11:32 +1000
                Re: Looking for a good introduction to object oriented programming with Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-08 12:42 -0400
                Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-08 20:31 +0100
                Re: Looking for a good introduction to object oriented programming with Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-08 22:59 -0400
                Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-09 08:29 +0100
                Geneology Packages -- WAS: Looking for a good introduction to object oriented programming with Python Simon Cropper <simoncropper@fossworkflowguides.com> - 2012-08-09 13:51 +1000
                Re: Geneology Packages Ben Finney <ben+python@benfinney.id.au> - 2012-08-09 14:00 +1000
    Re: Looking for a good introduction to object oriented programming with Python rusi <rustompmody@gmail.com> - 2012-08-06 05:19 -0700
      Re: Looking for a good introduction to object oriented programming with Python lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-06 15:27 +0100
        Re: Looking for a good introduction to object oriented programming with Python rusi <rustompmody@gmail.com> - 2012-08-06 09:34 -0700
          Re: Looking for a good introduction to object oriented programming with Python Chris Angelico <rosuav@gmail.com> - 2012-08-07 08:44 +1000
      OT probably but still relevant (was Re: Looking for a good introduction to object oriented programming with Python) lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-06 17:23 +0100
        Re: OT probably but still relevant (was Re: Looking for a good introduction to object oriented programming with Python) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-07 09:44 +0000
          Re: OT probably but still relevant (was Re: Looking for a good introduction to object oriented programming with Python) lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-07 11:23 +0100

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