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