Module agents.event_bus

Classes

class EventBus

Expand source code

class EventBus(EventEmitter[EventTypes]):
    _instance = None

    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(EventBus, cls).__new__(cls)
            cls._instance._initialized = False
        return cls._instance

    def __init__(self):
        if not self._initialized:
            super().__init__()
            self._initialized = True

    @classmethod
    def get_instance(cls) -> 'EventBus':
        return cls()

Abstract base class for generic types.

On Python 3.12 and newer, generic classes implicitly inherit from Generic when they declare a parameter list after the class's name::

class Mapping[KT, VT]:
    def __getitem__(self, key: KT) -> VT:
        ...
    # Etc.

On older versions of Python, however, generic classes have to explicitly inherit from Generic.

After a class has been declared to be generic, it can then be used as follows::

def lookup_name[KT, VT](mapping: Mapping[KT, VT], key: KT, default: VT) -> VT:
    try:
        return mapping[key]
    except KeyError:
        return default

Ancestors

• EventEmitter
• typing.Generic

Static methods

def get_instance() ‑> EventBus