[Python-Dev] bool does not want to be subclassed?

[Greg Ewing]

Martin:

> So bool guarantees:  ... b)
> there are only two different objects representing these values.

Why is this property so important?

I can understand why it's useful for there to be only
one None, since programs do 'x is None' a lot. But it's
not as if you can get away with saying 'x is True' or
'x is False' all over the place.

Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
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