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[Python-Dev] Dataclasses and correct hashability

Ethan Furman ethan at stoneleaf.us
Fri Feb 2 17:11:24 EST 2018 
On 02/02/2018 08:09 AM, Eric V. Smith wrote:
> On 2/2/2018 10:56 AM, Elvis Pranskevichus wrote:

>> My point is exactly that there is _no_ valid use case, so (hash=True,
>> frozen=False) should not be a thing!  Why are you so insistent on adding
>> a dangerous option which you admit is nearly useless?
>
> Because it's not the default, it will be documented as being an advanced use case, and it's useful in rare instances.

Personally, I don't think advanced use-cases need to be supported by flags as they can be supported by just writing the 
__dunder__ methods.

--
~Ethan~
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