On 22 Sep, 10:32, Steven D'Aprano
<[EMAIL PROTECTED]> wrote:
> but it isn't good enough if the function needs to refer to it's own
> state, because functions can only refer to themselves by name and the
> factory can't know what name the function will be bound to.
>
> As far as I know, the only objects that know how to refer to themselves
> no matter what name they have are classes and instances. And instances
> share at least some state, by virtue of having the same class.
Here is a simple way to make a function able to refer to its own
state:
def bindfunction(f):
def bound_f(*args, **kwargs):
return f(bound_f, *args, **kwargs)
bound_f.__name__ = f.__name__
return bound_f
>>> @bindfunction
... def foo(me, x):
... me.attr.append(x)
... return me.attr
...
>>> foo.attr = []
>>> foo(3)
[3]
>>> foo(5)
[3, 5]
>>>
--
Arnaud
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