Object copying itself

[Dale Strickland-Clark]

I have an object which is just data and an __init__ to set up some
defaults.

Now I need to allow __init__ to get the defaults from another instance
of itself if passed as an argument.

Most of the values are simple numerics and a few object references but
there are also a couple of lists. 

I want object references copied (shallow copy) but the lists need to
be copied entirely (deep copy).

Do I have to do this by hand or is there a neat way of doing it?

Ta very much.
--
Dale Strickland-Clark
Riverhall Systems Ltd