simple class question

[anton muhin]

C GIllespie wrote:
> Dear all,
> 
> I'm new to both python and OOP, so could I ask a simple question.
> 
> I have class:
> 
> class species:
>     __init__(self,pop=0):
>         self.pop=pop
> 
> Now I want to do something like this:
> 
> X=species(pop=10)
> Y=species(pop=X.pop)
> OK, but now I want to update X.pop and have that mirrored in Y.pop, i.e. if
> X.pop=5, Y.pop now equals 5.
> 
> What is the best/nicest/simplest way of doing this?
> 
> Many thanks
> 
> Colin
> 
> 

In some cases pop should be class attribute.

regards,
anton.