(watcher)
return get_event_loop_policy().set_child_watcher(watcher)
Equivalent to calling
    get_event_loop_policy().set_child_watcher(watcher).
Equivalent to calling
    get_event_loop_policy().set_child_watcher(watcher).
Equivalent to calling get_event_loop_policy () . set_child_watcher ( watcher ) .
def set_child_watcher(watcher):
    """Equivalent to calling
    get_event_loop_policy().set_child_watcher(watcher)."""
    return get_event_loop_policy().set_child_watcher(watcher)
def set_child_watcher ( watcher ) : return get_event_loop_policy ( ) . set_child_watcher ( watcher )