dunder-docs (was Python is DOOMED! Again!)

[Marko Rauhamaa]

Gregory Ewing <greg.ewing at canterbury.ac.nz>:

> You seem to be suggesting an optimisation that pre-creates bound
> methods when the instance is created. Keeping a cache of bound methods
> would achieve the same thing without changing the semantics. I think
> CPython might already be doing that, but I'm not sure.

No, I'm saying Python should behave differently.

Python:

   >>> class A:
   ...    def f(self):
   ...       print("f")
   ...    def g(self):
   ...       print("g")
   ... 
   >>> a = A()
   >>> a.__class__.f = a.__class__.g
   >>> a.f()
   g
    
In my preferred semantics, a.f() would print

   >>> a.f()
   f


Marko