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".
--
http://mail.python.org/mailman/listinfo/python-list
