comparing booleans

[Erik Max Francis]

Gerrit Holl wrote:

> is it proper to compare booleans? It is possible, of course, because
> they're compatible with numbers, but booleans aren't truly numbers.
> I'm
> tempted to write:
> 
>     return cmp(self.extends, other.extends)

Even if you're seriously worried about the correctness of comparing
Booleans, you can always explicitly turn them into integers:

	return cmp(int(self.extends), int(other.extends))

> (Hmm, makes me wonder, for booleans, are != and ^ equal?)

Easily checked:

>>> for x in (True, False):
...  for y in (True, False):
...   print x, y, x != y, x ^ y 
... 
True True False False
True False True True
False True True True
False False False False

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