On Tue, Apr 27, 2010 at 4:36 PM, GZ <zyzhu2...@gmail.com> wrote:
> I want to store a reference to a function into a class property.
>
> So I am expecting that:
>
> class A:
> fn = lambda x: x
>
> fn = A.fn
> fn(1)
>
> Traceback (most recent call last):
> File "<string>", line 1, in <string>
> TypeError: unbound method <lambda>() must be called with A instance as
> first argument (got int instance instead)
>
>
> The problem is that A.fn is treated as a bounded method. I really want
> A.fn to be a variable that stores a reference to a function. Is there
> any way to achieve this?
Use the staticmethod() decorator:
class A(object):
@staticmethod
def fn(x):
return x
#rest same as before
Cheers,
Chris
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