human
Solve the following python programming problem given the following code:
def test_release_closed(self) : 
    pool = Pool (url = 'ws://localhost:8182/', maxsize = 2, username = 'stephen', password = 'password', future_class = Future) 
    self.assertEqual (len (go.pool), 0) 
    @ trollius.coroutine 
    def go() : 
        c1 = (yield From (pool.acquire ())) 
        self.assertEqual (len (pool._acquired), 1) 
        c1.close () 
        (yield From (pool.release (c1))) 
        self.assertEqual (len (pool.pool), 0) 
        self.assertEqual (len (pool._acquired), 0) 
self.loop.run_until_complete (go ()) 

    
    

    Fix the buggy line: self.assertEqual (len (go.pool), 0)
assistant
#Here is Python program to fix the buggy line: self.

self.assertEqual (len (pool.pool), 0)