Making immutable instances

bonono at bonono at
Thu Nov 24 10:01:16 CET 2005

Mike Meyer wrote:
> "Giovanni Bajo" <noway at> writes:
> > Mike Meyer wrote:
> >> Note that this property of __slots__ is an implementation detail. You
> >> can't rely on it working in the future.
> > I don't "rely" on it. I just want to catch bugs in my code.
> I certainly hope you're not relying on it to catch bugs. You should do
> proper testing instead. Not only will that catch pretty much all the
> bugs you mention later - thus resolving you of the need to handcuff
> clients of your class - it will catch lots of other bugs as well.
That is an ideal case and we all know the real world is not ideal or
every program would be bug free. And I don't think anyone would solely
relies on the language feature for spotting bugs. Whether this kind of
guard is useful is another story.

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