Utilities for config building and validation.
oneof(attrs_cls, must_be_set: bool = False)¶
Ensure that the decorated attrs class only has a single attribute set.
This decorator is inspired by the oneof protobuffer field behavior.
attrs_cls – An attrs decorated class.
must_be_set – If True, raise an error if none of the attributes are set. If not, error will only be raised if more than one attribute is set.
The attrs_cls with an __init__ method that checks for the number of attributes that are set.