Re: [Visualpython-users] text color problem?

[Guy K. K. <guy...@au...>]

On Wed, 02 Mar 2011 06:45:04 Bruce Sherwood wrote:
> In vis/primitives.py, the code for
> changing color and material for a text object should look like this:
> 
>     def set_material(self, material):
>         self.extrusion.material = material
>     def get_material(self):
>         return self.__material
> 
>     def set_color(self, color):
>         self.extrusion.color = color
>     def get_color(self):
>         return self.__color

Are you *really* sure about that? Python usually does not use the concept of 
getters and setters. This turns out to be *very* unpythonic. I'd rather 
suggest the following:

    @material.setter
    def material(self, material):
        self.extrusion.material = material

    @property
    def material(self):
        return self.__material

    @color.setter
    def set_color(self, color):
        self.extrusion.color = color

    @property
    def get_color(self):
        return self.__color

This exposes the given methods to transparently handle access (setting and 
getting) to mock attributes as they would be normally used within Python 
classes. It makes a nice API that is idiomatically consistent to use for a 
Pythoneer.

For further reference on how to use the property() built-in, particularly in 
the way of decorators, have a look here:

http://docs.python.org/library/functions.html#property

Guy

-- 
Guy K. Kloss
School of Computing + Mathematical Sciences
Auckland University of Technology
Private Bag 92006, Auckland 1142
phone: +64 9 921 9999 ext. 5032
eMail: Guy...@au...