instance.attribute lookup
Mark Lawrence
breamoreboy at yahoo.co.uk
Fri Oct 5 19:32:44 EDT 2012
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.
More information about the Python-list
mailing list