> From: Raymond Hettinger [mailto:raymond.hettinger@verizon.net]
>=20
> class Pane(object):
> __slots__ =3D ('background', 'foreground', 'size', 'content')
> background =3D 'black'
> foreground =3D 'white'
> size =3D (80, 25)
>=20
> p =3D Pane()
> p.background =3D 'light blue' # override the default
> assert p.foreground =3D=3D 'white' # other defaults still in-place
Wow - I hadn't realised that.
I would prefer to think of this is a useful feature rather than a wart. =
Finally we can have true constants!
class Pane (module): # Or whatever - you get the idea ;)
__slots__ =3D ('background', 'foreground', 'size', 'content', =
'__name__', '__file__')
__name__ =3D globals()['__name__']
__file__ =3D globals()['__file__']
background =3D 'black'
foreground =3D 'white'
size =3D (80, 25)
import sys
sys.modules[__name__] =3D Pane()
OK - so you could get around it by getting the class of the "module" and =
then modifying that ... but it's the best yet. It even tells you that =
the attribute is read-only!
Tim Delaney
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