On Tue, Jun 1, 2021 at 10:16 PM Steven D'Aprano <steve@pearwood.info> wrote:
The only slightly awkward case is the bare variable case. Most of the time there will be no overlap between the function/class decorators and the bare variable decorator, but in the rare case that we need to use a single function in both cases, we can easily distinguish the two cases:
def mydecorator(arg, **kwargs): if isinstance(arg, str): # must be decorating a variable ... else: # decorating a function or class assert kwarg == {}
So it is easy to handle both uses in a single function, but I emphasise that this would be rare. Normally a single decorator would be used in the function/class case, or the variable case, but not both.
I can't imagine any situation where you would *want* this, but it is actually possible for a decorator to be given a string:
def mydecorator(arg, **kwargs): ... if isinstance(arg, str): ... print("Decorating a variable can't happen, right?") ... else: ... print("Good, we're decorating a function.") ... return arg ... @mydecorator ... @str ... def f(): ... ... Decorating a variable can't happen, right?
This probably falls under "you shot yourself in the foot, so now you have a foot with a hole in it". ChrisA