(self, loop)
Attach the watcher to an event loop.

        If the watcher was previously attached to an event loop, then it is
        first detached before attaching to the new loop.

        Note: loop may be None.
Attach the watcher to an event loop.
Attach the watcher to an event loop .
def attach_loop(self, loop):
        """Attach the watcher to an event loop.

        If the watcher was previously attached to an event loop, then it is
        first detached before attaching to the new loop.

        Note: loop may be None.
        """
        raise NotImplementedError()
def attach_loop ( self , loop ) : raise NotImplementedError ( )