On 12/12/2019 8:07 AM, Arthur Pastel wrote:
No, __slots__ can't be added or modified after the class exists (which is why @dataclass doesn't have an option to add __slots__).On Thu, Dec 12, 2019 at 2:03 AM Eric V. Smith <[email protected] <mailto:[email protected]>> wrote: On 12/11/2019 6:36 PM, Arthur Pastel wrote: >> Add an extra hidden attribute to every instance just >> to track whether you’re inside __post_init__ so __setattr__ can check it? I don't want to add attributes that weren't defined in the class definition. Would it be okay if we create an instance attribute before calling the __init__ and then we remove it after the __post_init__ ? Then we would simply have to check for the attribute existence when checking if we raise a FrozenInstanceError.That wouldn't work if the class used __slots__.Then, in this specific case, would it be possible to add the attribute to the __slots__ in the generated class ?
Eric
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