Re: Semi-newbie, rolling my own __deepcopy__

[Michael Spencer]

Steven Bethard wrote:
Michael Spencer wrote:
    def __deepcopy__(self, memo={}):
        from copy import deepcopy
        result = self.__class__()
        memo[id(self)] = result
        result.__init__(deepcopy(tuple(self), memo))
        return result

I know this is not your recipe, but is there any reason to use
    self.__class__()
instead of
    type(self)()
if you know you're inside a new-style class?
STeVe
I don't know - aren't they identical? I would write self.__class__ (without 
claiming that that's better)

BTW, I had a different question about the method:
wouldn't:
    result = self.__class__.__new__()
or in your form:
    result = type(self).__new__()
be better (i.e., clearer and possibly safer) than calling __init__ twice (but I 
haven't tried it!)

Michael

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