netimen a écrit :
Can I substitute a method of a class by a callable object (not a
function)? I can very easy insert my function in a class as a method,
but an object - can't.
functions implement the descriptor protocol so when looked up as class
attributes, the lookup invoke their __get__ method, which in turn
returns a method object (which is a thin wrapper around the function,
the class and the instance).
You can either build the method manually (as Georges explained), or make
your own Obj class a proper descriptor:
from types import MethodType
class Obj(object):
__name__ = "Obj" # for Method.__repr_
def __call__(self, obj_self):
print 'Obj'
def __get__(self, instance, cls):
return MethodType(self, instance, cls)
HTH
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