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Re: instance.attribute lookup

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On 06/10/2012 00:12, Ethan Furman wrote:
> Steven D'Aprano wrote:
>> On Fri, 05 Oct 2012 10:39:53 -0700, Ethan Furman wrote:
>>
>>> There is a StackOverflow question [1] that points to this on-line book
>>> [2] which has a five-step sequence for looking up attributes:
>>>
>>>  > When retrieving an attribute from an object (print
>>>  > objectname.attrname) Python follows these steps:
>>>  >
>>>  > 1. If attrname is a special (i.e. Python-provided) attribute for
>>>  > objectname, return it.
>> [...]
>>> I'm thinking step 1 is flat-out wrong and doesn't exist.  Does anybody
>>> know otherwise?
>>
>> I'm thinking I don't even understand what step 1 means.
>>
>> What's a Python-provided attribute, and how is it different from other
>> attributes?
>
> Well, if /you/ don't understand it I feel a lot better about not
> understanding it either!  :)
>
> Glad to know I'm not missing something (besides ESP, a crystal ball, and
> a mind-reader!)
>
> ~Ethan~

My probably highly uneducated guess is that "Python-provided attribute" 
refers to double underscore names. YMMV by several trillion light years :)

-- 
Cheers.

Mark Lawrence.

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instance.attribute lookup Ethan Furman <ethan@stoneleaf.us> - 2012-10-05 10:39 -0700
  Re: instance.attribute lookup Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-05 23:00 +0000
    Re: instance.attribute lookup Ethan Furman <ethan@stoneleaf.us> - 2012-10-05 16:12 -0700
    Re: instance.attribute lookup Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-10-06 00:32 +0100

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