Neil Girdhar <mistersh...@gmail.com> added the comment:
> How would an arbitrary derived class know how to call this? It can't. There
> has to be knowledge of the base class's requirements already. Surely knowing
> "__post_init__ must be called with some_arg" isn't too different from "I know
> __post_init__ doesn't exist".
This is exactly the same problem you have with all other "augmenting methods"
that have arbitrary parameters (e.g., __init__). When calling super on a
non-final class you could simply forward keyword arguments.
@dataclass
class X:
def __post_init__(self, **kwargs):
super().__post_init__(**kwargs)
...
@dataclass
class Y(X):
def __post_init__(self, **kwargs):
super().__post_init__(**kwargs)
...
> I'm still unconvinced, but I'll hold off on making a decision to see if
> there's more support. Maybe taking it to python-ideas would be worthwhile.
Sounds good, done: https://groups.google.com/g/python-ideas/c/-gctNaSqgew
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<https://bugs.python.org/issue46757>
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