code: def event_detach(self, eventtype):
          
          if not isinstance(eventtype, EventType):
              raise VLCException("%s required: %r" % ('EventType', eventtype))
  
          k = eventtype.value
          if k in self._callbacks:
              del self._callbacks[k] # remove, regardless of libvlc return value
              libvlc_event_detach(self, k, self._callback_handler, k)
docs: Unregister an event notification.
  
          @param eventtype: the event type notification to be removed.