human
Solve the following python programming problem given the following code:
@ patch ('ws4py.manager.SelectPoller') 
def test_mainloop_can_be_stopped(self, MockSelectPoller) : 
    m = WebSocketManager (poller = MockSelectPoller ()) 
    def poll() : 
        (yield 1) 
        m.stop () 
        (yield 2) 
m.poller.poll.return_value = poll () 
    self.assertFalse (m.running) 
    m.start () 
    time.sleep (0.1) 
    self.assertFalse (poll.running) 

    
    

    Fix the buggy line: self.assertFalse (poll.running)
assistant
#Here is Python code to fix the buggy line: self.

self.assertFalse (m.running)