[BangPypers] Any python metaclasses for UID

Sirtaj Singh Kang sirtaj at sirtaj.net
Mon Jul 27 11:20:39 CEST 2009

On 27-Jul-09, at 1:50 PM, Shivaraj M S wrote:
> Can there be a metaclass in python which can change the behaviour of  
> object at creation stage by extending it and nullifying friend  
> functions?

(I must confess this is the only sentence in the email that I could  

If what you are looking for is a way to customize object creation,  
have a look at the __new__ class method. It is called before __init__,  
and can return _any_ object when the client code attempts to  
instantiate the class.

In some cases I have dynamically generated a subclass of the class  
using type(), and returned a new instance of that. I think this is the  
kind of thing you are looking for.


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