Why has __new__ been implemented as a static method?

[Steven D'Aprano]

On Sat, 03 May 2014 12:37:24 +0200, Jurko Gospodnetić wrote:

> Hi all.
> 
>    I was wandering why Python implements its __new__ method as a static
> and not a class method?

Have you read Guido's tutorial on it?

https://www.python.org/download/releases/2.2.3/descrintro

[quote]
Factoid: __new__ is a static method, not a class method. I initially 
thought it would have to be a class method, and that's why I added the 
classmethod primitive. Unfortunately, with class methods, upcalls don't 
work right in this case, so I had to make it a static method with an 
explicit class as its first argument.
[end quote]

I'm not entirely sure what he means by "upcalls", but I believe it means 
to call the method further up (that is, closer to the base) of the 
inheritance tree.


-- 
Steven D'Aprano
http://import-that.dreamwidth.org/