20.06.18 20:07, Guido van Rossum пише:
Maybe we're misunderstanding each other? I would think that calling the
classmethod object directly would just call the underlying function, so
this should have to call utility() with a single arg. This is really the
only option, since the descriptor doesn't have any context.
In any case it should probably `def utility(cls)` in that example to
clarify that the first arg to a class method is a class.
Sorry, I missed the cls parameter in the definition of utility().
class Spam:
@classmethod
def utility(cls, arg):
...
value = utility(???, arg)
What should be passed as the first argument to utility() if the Spam
class (as well as its subclasses) is not defined still?
Maybe there is a use case for calling the staticmethod descriptor.
Although in this rare case I would apply the staticmethod decorator
after using the function in the class body.
class Spam:
# @staticmethod
def utility(arg):
...
value = utility(arg)
utility = staticmethod(utility)
But I don't see a use case for calling the classmethod descriptor.
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