[Python-Dev] Concerns about method overriding and subclassing with dataclasses (original) (raw)
Ethan Furman ethan at stoneleaf.us
Fri Dec 29 15:30:52 EST 2017
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On 12/29/2017 11:55 AM, Ethan Smith wrote:
On Fri, Dec 29, 2017 at 11:37 AM, Ethan Furman wrote:
It is possible to determine whether an existing repr is from 'object' or not, and only provide one if that is the case. I think that should be the default, with 'repr = True' for those cases where a new, auto-generated, repr is desired. The only other thing you'd want to handle is to cover inheriting from another dataclass. e.g., if I have dataclass with attribute a, and subclass it to add attribute b, I'd want both in the repr.
Good point. So auto-generate a new repr if:
- one is not provided, and
- existing repr is either:
- object.repr, or
- a previous dataclass repr
And if the auto default doesn't work for one's use-case, use the keyword parameter to specify what you want.
--
Ethan
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