Generic Python

[Max M]

Uwe Mayer wrote:

> The problem is that I've got a base class and there should be many
> subclasses of it. Each subclass just overwriting an output method and
> serving as a template: 
> 
> class base1:
>     def __init__(self):
>         ...
>     def output(self):
>         ...
> 
> class template1(base1):
>     def output(self):
>         ...
> 
> class template2(base1):
>     def ouptut(self):
>         ...
> 
> I need many, many of these "template" classes, so a sorter way would be
> to accustom the base class to take another argument which then outputs
> the right thing:


This problems begs for you to create a factory function::

     def factory(objType, initValue):

         classTable = {
             'template1':template1
             'template2':template2
         }
         return classTable[objType](initValue)


This way you don't have to know the specifics anout the class that your 
create.

you would then just have to::

     import templates
     newObj = templates.factory('template2', 'Initial text')

regards Max M