8.7.16. vantage6.common.Singleton¶ class Singleton¶ Bases: type Singleton metaclass. It allows us to create just a single instance of a class to which it is the metaclass. __init__(*args, **kwargs)¶ Methods __init__(*args, **kwargs) mro() Return a type's method resolution order. mro()¶ Return a type’s method resolution order.