Changing the class of an instance
Alex
cut_me_out at hotmail.com
Sat Jul 15 15:05:36 EDT 2000
> Well it's exactly what I was doing once because I was a lot more
> clever than the guys who said I shouldn't. And then I decided quite
> suddenly that they were right. (At the end of a _long_ stretch trying
> to figure out why the heck something wasn't working - of course the
> answer is the object in question was very different from the object it
> appeared it should be...)
It can have really confusing consequences, but it's still too useful for
me to abandon. If you have a class which takes a long time to
instantiate (e.g., you have to load a lot of statistical data into
memory,) then having a script like
class C:
pass
if 't' not in dir():
t = C()
t.__class__ = C
t.experiment_with_instance()
can really decrease your turn-around time when you're debugging -- you
can change t's methods around behind its back without changing its data.
Alex.
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