[Python-ideas] Allow lambda decorators

[spir]

Le Mon, 09 Feb 2009 08:32:46 -0600,
Ron Adam <rrr at ronadam.com> a écrit :

>  >>> class obj(object):  
> ...     def __init__(self):
> ...         self.i = i
> ...     def __call__(self):
> ...         return  self.i
> ...
>  >>> objs = [obj() for i in range(10)]
>  >>> [v() for  v in objs]  
> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
> 
> Because the value is stored on the object at the time the object is 
> created, vs when it is  called, this works as expected.

I see this formulation equivalent to "def f(i=i0): return i", I mean conceptually. From an OO point of view, a default/keyword arg is indeed an (implicit) attribute of a function, evaluated at definition/creation time. Actually, isn't the above code an excellent explanation of what a default argument is in python?

Denis

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