> I agree with Andrew: it's a great idea, but I couldn't come up with a
> way to implement it, so I followed attrs lead instead. Maybe someone can
> come up with a good way to implement it
It seems like this could be solved if a general way could be created to
allow dataclasses to handle descriptors properly? Or if not descriptors
proper, at least a dataclass version of @property?
I'm sure this has been discussed before. But one idea would be to add an
optional "property" argument to `field`, which would turn it into a
descriptor.
So the code could be something like this, maybe:
@dataclasses.dataclass(frozen=True)
class Person:
name: str
surname: str
fullname: str = dataclasses.field(property=True) # fullname is now a
field descriptor
@fullname.getter
def fullname_getter(self):
return self._fullname
@fullname.setter
def fullname_setter(self, value):
assert value == ????
self.fullname = f"{self.name} {self.surname}"
If this is a good idea, one big question is what the default __init__
method should supply to the "value" argument.
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