human
Solve the following python programming problem given the following code:
@ mock.patch.object (greenthread, 'spawn_after') 
def test_event_dispatch(self, mock_spawn_after) : 
    def handler(event) : 
        got_events.append (event) 
hostimpl = host.Host ('qemu:///system', lifecycle_event_handler = hostimpl) 
    got_events = [] 
    hostimpl._init_events_pipe () 
    event1 = event.LifecycleEvent ('cef19ce0-0ca2-11df-855d-b19fbce37686', event.EVENT_LIFECYCLE_STARTED) 
    event2 = event.LifecycleEvent ('cef19ce0-0ca2-11df-855d-b19fbce37686', event.EVENT_LIFECYCLE_PAUSED) 
    hostimpl._queue_event (event1) 
    hostimpl._queue_event (event2) 
    hostimpl._dispatch_events () 
    want_events = [event1, event2] 
    self.assertEqual (want_events, got_events) 
    event3 = event.LifecycleEvent ('cef19ce0-0ca2-11df-855d-b19fbce37686', event.EVENT_LIFECYCLE_RESUMED) 
    event4 = event.LifecycleEvent ('cef19ce0-0ca2-11df-855d-b19fbce37686', event.EVENT_LIFECYCLE_STOPPED) 
    hostimpl._queue_event (event3) 
    hostimpl._queue_event (event4) 
    hostimpl._dispatch_events () 
    want_events = [event1, event2, event3] 
    self.assertEqual (want_events, got_events) 
    mock_spawn_after.assert_called_once_with (hostimpl._lifecycle_delay, hostimpl._event_emit, event4) 

    
    

    Fix the buggy line: hostimpl = host.Host ('qemu:///system', lifecycle_event_handler = hostimpl)
assistant
#Here is Python program to fix the buggy line: hostimpl = host.

hostimpl = host.Host ('qemu:///system', lifecycle_event_handler = def handler()