Note about getattr and '.'

Steven D'Aprano steve at REMOVEME.cybersource.com.au
Wed Nov 22 05:09:43 CET 2006


On Tue, 21 Nov 2006 22:39:09 +0100, Mathias Panzenboeck wrote:

> szport at gmail.com wrote:
>> There is an interesting skewness in python:
>> 
>> class A(object): pass
>> 
>>>>> a=A()
>>>>> setattr(a, '$foo', 17)
>>>>> getattr(a, '$foo')
>> 17
>> 
>> But I can't write 
>>>>> a.'$foo'
>> 
> 
> Yes, this is known. I think IronPython uses a specialized dictionary for members, which prohibits 
> malformed names. I don't know if there will be such a dictionary in any future CPython version. 
> (Would be good.)


Why would it be good?

How many bugs have you found that were caused by this behaviour?



-- 
Steven D'Aprano 




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