About __class__ of an int literal

Tim Golden mail at timgolden.me.uk
Tue Sep 28 12:24:34 CEST 2010

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__


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