How to prevent illegal definition of a variable in objects?

[Sean Blakey]

On Wed, Jun 14, 2000 at 05:48:45PM -0400, Daehyok Shin wrote:
> How can I prevent illegal definition of a variable to an object?
> For instance,
> 
> class A:
>     __init__(self):
>             self.x = 1
> 
>     __setattr__(self, name, value):
>             if name == "x":
>                     self.x = value
>             else:
>                 raise AttributeException
> 
>     __getattr__(self, name):
>             if name == "x":
>                 return self.x
>             else:
>                 raise AttributeException
> 
> >>> a = A()
> >>> a.x = 10
> >>> a.y = 20 # I want to raise an AttributeException.
> 
> Peter
> 
> 
> -- 
> http://www.python.org/mailman/listinfo/python-list

The code you posted seems to do what you want, provided you
a)add the 'def' keyword to your function definitions
    and
b) define AttributeException (perhaps you meant AttributeError?)

-- 
Sean Blakey, sblakey at freei.com
Software Developer, FreeInternet.com
(253)796-6500x1025
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right?"
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