About __class__ of an int literal

Hans Mulder hansmu at xs4all.nl
Tue Sep 28 22:08:44 CEST 2010


Tim Golden wrote:
> On 28/09/2010 10:27, AlexWalk wrote:
>> In python 3.1.2(I'm using windows edition, 32bit), accessing __class__ 
>> of an int literal will raise a SyntaxException, while other literals 
>> will not. For example. 1.__class__ is an error, while 1.1.__class__ 
>> runs ok.
>>
>>
>> I searched the python issue tracker but failed to find relevant 
>> reports. I wonder if  this is an unreported issue.
> 
> It's a little bit subtle. The trouble is that the parser
> sees a number followed by a dot and assumes that it's looking
> at a decimal number. When the next thing isn't a number, it
> raises a SyntaxError exception.
> 
> You can achieve what you're after by putting a space before the dot:
> 
> 1 .__class__

Alternatively, you can use parenthesis:

(1).__class__

Some people find one solution uglier than the other.


-- HansM




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