Consider this code:

class A:
    __slots__ = [
        "_color",
    ]

    color = None

    @property
    def color(self):
        return self._color


A().color


Executing this shows:

Traceback (most recent call last):
  File "/Users/pgalindo3/lel.py", line 21, in <module>
    A().color
  File "/Users/pgalindo3/lel.py", line 18, in color
    return self._color
AttributeError: 'A' object has no attribute '_color'. Did you mean: '_color'?

This is because the nested getattr call of "@property" overrides the metadata information in the exception object and it tries to produce an error message for the attribute "color" instead of "_color".