[Python-Dev] For review: PEP 285: Adding a bool type

2002年3月08日 17:09:27 -0500

> I didn't want to jump on the bandwagon, but...
>> It occurs to me that one potential benefit of having a
> boolean type is to avoid mistakes like this:
>> test = value & MASK
> if test == True:
> DoSomething()
>> Sure, "if bool(test) == True:" does the right thing, but
> so does "if test:". You wouldn't have made the mistake
> in the first place if you'd thought of that. :-)
>> I think at least add something like this should be added
> to the description in the PEP:
>> def __cmp__(self,other):
> return int.__cmp__(self,bool(other))

Absolutely not. I want True == 2 to be False.
--Guido van Rossum (home page: http://www.python.org/~guido/)