Static method

[mk]

Bruno Desthuilliers wrote:

>>>
>>>
>>> class Foo4(object):
>>>     """ working solution 2 : use a lambda """
>>>     @staticmethod
>>>     def bar(baaz):
>>>         print baaz
>>>
>>>     tagada = {'bar': lambda x : Foo4.bar(x)}
>>>
>>>     def test(self, baaz):
>>>         self.tagada['bar'](baaz)
>>
>> Huh? How does this one work? After all, while in Foo4 body, the Foo4 
>> does not exist yet? Does lambda defer evaluation to runtime (when it's 
>> executed) or smth?
> 
> or smth, yes !-)
> 
> A lambda expression evals to an ordinary function - just like a def 
> statement - so Foo4 is not resolved until Foo4.tagada['bar'] is actually 
> called.

This works, but... Foo4.bar in tagada is a staticmethod. So what's 
needed is Foo4.bar.__get__(x)  (not that I'm that smart, I just got 
'staticmethod is not callable' exception).

It appears I have to use __get__ anyway while referring to bar in Foo4 
methods:

def testrefer(self, val):
     self.bar.__get__(val)
     Foo4.bar.__get__(val)

At least I have to do this in my own code:

     def testit(self, fname):
         self.print_internal_date.__get__(fname + 'c')
         PYFileInfo.print_internal_date.__get__(fname + 'c')


Or else I get "TypeError: 'staticmethod' object is not callable".