copy construtor question

[xiaosong xia]

Hi all,
 
I am trying to define a class with copy constructor as following:
 
class test:
     def __init__(self, s=None):
          self=s
 
x=[1,2]
 
y=test(x)
 
print y.__dict__
 
it gives 
{}
 
The above code doesn't work. 
 
Questions are:
 
1. Can 'self ' be a class attribute?
2. How to make a copy constructor?
 
Thanks for any help.
 
Eric


      
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