[Python-Dev] Assignment to None

Wed Jun 11 11:21:12 CEST 2008

Thomas Lee wrote:
> Martin v. Löwis wrote:
>> In Python 3, None, True, and False are keywords, so clearly, the
>> intended semantics is also the implemented one (and the language
>> description for 2.x needs to be updated/clarified).
>>>>> Interestingly enough, the semantics of True, False and None are 
> different from one another in 2.6:
>> True = "blah" and False = 6 are perfectly legal in Python <=2.6.

True and False didn't get the same treatment as None because we didn't 
want to break the follow compatibility workaround for Python version 
prior to 2.2.2:
try:
 True
except NameError:
 True, False = 1, 0
Cheers,
Nick.
-- 
Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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