beta

Decorator to mark a function, a class, or a property as beta.

When marking a classmethod, a staticmethod, or a property, the @beta decorator should go under @classmethod and @staticmethod (i.e., beta should directly decorate the underlying callable), but over @property.

When marking a class C intended to be used as a base class in a multiple inheritance hierarchy, C must define an __init__ method (if C instead inherited its __init__ from its own base class, then @beta would mess up __init__ inheritance when installing its own (annotation-emitting) C.__init__).