[Python-Dev] __slots__ and default values

[Delaney, Timothy C (Timothy)]

> From: Guido van Rossum [mailto:guido@python.org]
>=20
> > I would prefer to think of this is a useful feature rather than a
> > wart. Finally we can have true constants!
>=20
> Yuck.  If you want that, define a property-like class that doesn't
> allow setting.
>=20
> These "constants" of yours are easily subverted by defining a subclass
> which adds an instance __dict__ (any subclass that doesn't define
> __slots__ of its own does this).

Sorry - missing smiley there ;)

But see my other post for a potentially useful side-effect of this. Not =
something I think should be done, but fun to think about.

The idea is that you shouldn't be able to create a subclass without some =
really nasty work, as the only way to get it is to determine what module =
the module subclass is defined in, then grab the class out of that.

But it's a horrible hack and I should never have suggested it ;)

Tim Delaney