Oh, but the behavior of annotations in e.g. mypy is the same. They are
cumulative.
On Mon, Jan 11, 2021 at 17:42 Larry Hastings <la...@hastings.org> wrote:
>
> On 1/11/21 5:28 PM, Guido van Rossum wrote:
>
> On Mon, Jan 11, 2021 at 5:21 PM Larry Hastings <la...@hastings.org> wrote:
>
>> Slots intelligently support inheritance, too. I always kind of wondered
>> why annotations didn't support inheritance--if D is a subclass of C, why
>> doesn't D.__annotations__ contain all C's annotations too? But we're way
>> past reconsidering that behavior now.
>>
>
> Anyway, `__slots__` doesn't behave that way -- seems it behaves similar to
> `__annotations__`.
>
> __slots__ itself doesn't behave that way, but subclasses do inherit the
> slots defined on their parent:
>
> class C:
> __slots__ = ['a']
>
> class D(C):
> __slots__ = ['b']
>
> d = D()
> d.a = 5
> d.b = "foo"
> print(f"{d.a=} {d.b=}")
>
> prints
>
> d.a=5 d.b='foo'
>
> That's the inheritance behavior I was referring to.
>
>
> Cheers,
>
>
> */arry*
>
--
--Guido (mobile)
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