data validation when creating an object

[Mark Lawrence]

On 16/01/2014 01:09, Rita wrote:
> I would like to do some data validation when its going to a class.
>
> class Foo(object):
>    def __init__(self):
>      pass
>
> I know its frowned upon to do work in the __init__() method and only
> declarations should be there.

In the 10+ years that I've been using Python I don't ever recall seeing 
this, could we have a reference please.

>
> So, should i create a function called validateData(self) inside foo?
>
> I would call the object like this
>
> x=Foo()
> x.validateData()
>
> Is this the preferred way? Is there a way I can run validateData()
> automatically, maybe put it in __init__? Or are there other techniques
> people use for this sort of thing?
>
>
> --
> --- Get your facts first, then you can distort them as you please.--
>
>


-- 
My fellow Pythonistas, ask not what our language can do for you, ask 
what you can do for our language.

Mark Lawrence