Re: [Jython-users] Distinguing the type of an object

[Rutger V. <rv...@sf...>]

I think what you want to do, in general, is look at *behaviour*, not at 
*identity*. If something walks like a duck (or array), and quacks like a 
duck (or array) for our intents and purposes it is a duck (or array). I 
suppose tastes differ, but to me it seems that duck-typing is more OO 
than "real" type/instance checking. The type of an object is an 
implementation detail, what matters is how it presents itself to the world.

Guy K. Kloss wrote:

>Hi Christ,
>
>On Friday, October 21, 2005 02:26 pm, christophe blin wrote:
>  
>
>>I am doing the following to identify when the parameter is an array
>>and when it is not:
>>    if str(type(b)) == 'org.python.core.PyArray':
>>
>>I would like to know if there is another (more standard) way to do
>>this
>>    
>>
>
>in CPython I usually use isinstance() for those checks. If, for 
>instance, I want to check a passed argument for whether it is of a 
>suitable sequence type I use something like this:
>
>if isinstance(aces, list) or isinstance(aces, tuple):
>    # do it here ...
>
>You should check, whether that would work in Jython as well, never done 
>it in Jython myself, though.
>
>HTH,
>
>Guy
>
>  
>

-- 
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Rutger Vos, PhD. candidate
Department of Biological Sciences
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