RemovableEventHandle

class ignite.engine.events.RemovableEventHandle(event_name, handler, engine)

A weakref handle to remove a registered event.

A handle that may be used to remove a registered event handler via the remove method, with-statement, or context manager protocol. Returned from add_event_handler().

Parameters

• event_name (Union[CallableEventWithFilter, Enum, EventsList, Events]) – Registered event name.

• handler (Callable) – Registered event handler, stored as weakref.

• engine (Engine) – Target engine, stored as weakref.

Example usage:

engine = Engine()

def print_epoch(engine):
    print(f"Epoch: {engine.state.epoch}")

with engine.add_event_handler(Events.EPOCH_COMPLETED, print_epoch):
    # print_epoch handler registered for a single run
    engine.run(data)

# print_epoch handler is now unregistered

Methods

remove

Remove handler from engine.

remove()

Remove handler from engine.

Return type

None