why extending copy.*
merkosh at hadiko.de
Fri Jun 21 15:07:35 CEST 2002
i need shallow and deep copies of objects and I found the copy module in
the reference library which does quite a good job.
however, they write that one could implement the copy protocol by
extending/ overwriting the __copy__() and __deepcopy__() method.
since __copy__() and __deepcopy__() already duplicate the instance
dictionary, __deepcopy__() even recursively. For what reasons would I
want to extend /overwrite the capabilities of __copy__() or __deepcopy__
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