How to deepcopy a list of user defined lists?

[Chris Rebert]

On Wed, Jan 7, 2009 at 11:59 PM, srinivasan srinivas
<sri_annauni at yahoo.co.in> wrote:
> Hi,
> I have a class which is a subclass of builtin-type list.
>
> #------------------------------------------------------------------------------
> class clist(list):
>     def __new__(cls, values, ctor):
>         val = []
>         for item in values:
>             item = ctor(item)
>             val.append(item)
>
>         self = list.__new__(cls, val)
>         self.__values = val
>         self.__ctor = ctor
>         return self
> #-----------------------------------------------------------------------------------
>
> I have a list of clists, say c1 = [clist1, clist2, clist3]
> How do i deepcopy this list? I tried using copy.deepcopy() method. But i got some errors. Please suggest me.

And those errors are? Please include a full Traceback.

Cheers,
Chris

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