betty.attrs.default module¶ Attributes with default values. class betty.attrs.default.DefaultAttr¶ Bases: ProxyAttr, Generic An attribute with a default value. __init__(proxied: Attr[OwnerT, GetT, SetT, DataDefinitionT], default: Callable[[], SetT] | Callable[[OwnerT], SetT], /)¶ final init_owner(owner: OwnerT, /) → None¶ Initialize the property on an owner.