Can __iter__ be used as a classmethod?

[Alex Martelli]

Michele Simionato wrote:

> Alex Martelli <aleax at aleax.it> wrote in message
> news:<FYF9a.16465$zo2.505483 at news2.tin.it>...
>> Michele Simionato wrote:
>>    ... I wonder if there is a direct way to extract f
>> > from the classmethod ?
>> 
>> Sure, c.im_func is f.  That's how methods work.
> 
> I mean, how can I extract the function if I don't have the class?

Who cares about the class?  Just pass ANY type...


> If I convert a function
> 
>>>> def f(x): return x
> 
> to a staticmethod
> 
>>>> s=staticmethod(f)
> 
> I can have back the function via
> 
>>>> s.__get__(None)
> 
> If I have a classmethod
> 
>>>> c=classmethod(f)
> 
> I cannot do that. It seems I must define a dummy class

You can use almost any argument at your choice:


>>> def f(x): return x
...
>>> f
<function f at 0x4043725c>
>>> c = classmethod(f)
>>> c.__get__(int).im_func
<function f at 0x4043725c>
>>> c.__get__(c).im_func
<function f at 0x4043725c>
>>> c.__get__(23).im_func
<function f at 0x4043725c>
>>> c.__get__('as you like it').im_func
<function f at 0x4043725c>
>>>

You can't use None specifically, but thee is no need
for you to create a dummy class for the purpose, either.


Alex