static, class and instance methods (Reposting On Python-List Prohibited)
ast
nomail at com.invalid
Fri Oct 7 01:01:04 EDT 2016
"Gregory Ewing" <greg.ewing at canterbury.ac.nz> a écrit dans le message de
news:e5mgi9Fp1bsU1 at mid.individual.net...
> Lawrence D’Oliveiro wrote:
>>
>> Every function is already a descriptor.
>
> Which you can see with a simple experiment:
>
> >>> def f(self):
> ... print("self =", self)
> ...
I thought yesterday that every thing was clear. But I have
a doubt now with the following line:
> >>> g = f.__get__(17, None)
The signature of __get__ method is __get__ (self, inst, owner) so
once again the first parameter is filled automatically.
Is method __get__ itself a descriptor with an attribute __get__ to perform
the operation ? Hum, it would be endless ...
vars(f.__get__)
TypeError: vars() argument must have __dict__ attribute
no, so how does it work here ?
> >>> g
> <bound method f of 17>
> >>> g()
> self = 17
>
> --
> Greg
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