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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _send_event_to_all(self, action, event):
 """ Send an event to all the client listening for notifications on all projects :param action: Action name :param event: Event to send """

        for project_listeners in self._listeners.values():
            for listener in project_listeners:
                listener.put_nowait((action, event, {}))