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Groups > comp.lang.python > #7912

Re: What's the best way to write this base class?

Date 2011-06-18 08:37 -0700
From Ethan Furman <ethan@stoneleaf.us>
Subject Re: What's the best way to write this base class?
References <142e76c3-b304-43ef-af24-919fa6146369@c9g2000yqp.googlegroups.com>
Newsgroups comp.lang.python
Message-ID <mailman.122.1308411487.1164.python-list@python.org> (permalink)

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John Salerno wrote:
> 1)
> class Character:
> 
>     def __init__(self, name, base_health=50, base_resource=10):
>         self.name = name
>         self.health = base_health
>         self.resource = base_resource

You said above that health and resource will never be explicitly passed, 
yet here you have allowed for that possibility.  If you are going to 
have mosters, etc, also inherit from Character, with different health 
and resources, I would go this route with one change:

     def __init__(self, name, base_health, base_resoures):

and always specify those numbers on creation.


> 2)
> class Character:
> 
>     base_health = 50
>     base_resource = 10
> 
>     def __init__(self, name):
>         self.name = name
>         self.health = base_health
>         self.resource = base_resource

You do not need to assign health and resource here -- they are already 
assigned on the class, so the instance will see them automatically. 
When a change is made, the instance will automagically get its own copy.


> 3)
> BASE_HEALTH = 50
> BASE_RESOURCE = 10
> 
> class Character:
> 
>     def __init__(self, name):
>         self.name = name
>         self.health = BASE_HEALTH
>         self.resource = BASE_RESOURCE

If *all* characters (player, non-player, monster, etc) will have the 
same base health and resources then this is fine -- otherwise I would 
use option 1.

~Ethan~

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Thread

What's the best way to write this base class? John Salerno <johnjsal@gmail.com> - 2011-06-17 21:17 -0700
  Re: What's the best way to write this base class? Chris Angelico <rosuav@gmail.com> - 2011-06-18 14:53 +1000
  Re: What's the best way to write this base class? "bruno.desthuilliers@gmail.com" <bruno.desthuilliers@gmail.com> - 2011-06-18 03:55 -0700
    Re: What's the best way to write this base class? Tim Chase <python.list@tim.thechases.com> - 2011-06-18 06:24 -0500
      Re: What's the best way to write this base class? "bruno.desthuilliers@gmail.com" <bruno.desthuilliers@gmail.com> - 2011-06-18 06:37 -0700
        Re: What's the best way to write this base class? Ian Kelly <ian.g.kelly@gmail.com> - 2011-06-18 08:51 -0600
  Re: What's the best way to write this base class? TheSaint <nobody@nowhere.net.no> - 2011-06-18 19:04 +0800
  Re: What's the best way to write this base class? Mel <mwilson@the-wire.com> - 2011-06-18 10:22 -0400
  Re: What's the best way to write this base class? Ethan Furman <ethan@stoneleaf.us> - 2011-06-18 08:37 -0700
    Re: What's the best way to write this base class? John Salerno <johnjsal@gmail.com> - 2011-06-18 09:26 -0700
      Re: What's the best way to write this base class? Chris Angelico <rosuav@gmail.com> - 2011-06-19 02:34 +1000
      Re: What's the best way to write this base class? Chris Kaynor <ckaynor@zindagigames.com> - 2011-06-19 18:52 -0700
        Re: What's the best way to write this base class? John Salerno <johnjsal@gmail.com> - 2011-06-19 21:04 -0700
          Re: What's the best way to write this base class? Benjamin Kaplan <benjamin.kaplan@case.edu> - 2011-06-20 00:12 -0700
          Re: What's the best way to write this base class? Mel <mwilson@the-wire.com> - 2011-06-20 07:57 -0400
            Re: What's the best way to write this base class? Ian Kelly <ian.g.kelly@gmail.com> - 2011-06-20 12:31 -0600
          Re: What's the best way to write this base class? Terry Reedy <tjreedy@udel.edu> - 2011-06-20 13:58 -0400

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