@property can be used to define a broken __set_name__ attribute:

>>> class BadIdea:
...     @property
...     def __set_name__(self):
...         pass
... 
>>> class NotGoingToWork:
...     attr = BadIdea()
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'NoneType' object is not callable

And there's also a failing __set_name__ call:

>>> class FaultyImplementation:
...     def __set_name__(self, *args):
...         1/0
... 
>>> class TheoreticallyCouldWork:
...     attr = FaultyImplementation()
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 3, in __set_name__
ZeroDivisionError: division by zero