1"""An alternative solution with __getattribute__, instead of __setattr__."""
 2
 3
 4class HauntedMansion:
 5    SPOOKY_PREFIX = 'spooky_'
 6
 7    def __init__(self, **kwargs):
 8        for key, value in kwargs.items():
 9            setattr(self, key, value)
10
11    def __getattribute__(self, name):
12        if name.startswith('__'):
13            return super().__getattribute__(name)
14        if name.startswith(HauntedMansion.SPOOKY_PREFIX):
15            actual_name = name[len(HauntedMansion.SPOOKY_PREFIX):]
16            return super().__getattribute__(actual_name)
17        raise AttributeError
18
19    def __getattr__(self, name):
20        return "Booooo, only ghosts here!"