human
Solve the following python programming problem given the following code:
def test_acquire(self) : 
    pool = Pool (url = 'ws://localhost:8182/', maxsize = 2, username = 'stephen', password = 'password', loop = pool.loop, future_class = Future) 
    @ trollius.coroutine 
    def go() : 
        connection = (yield From (pool.acquire ())) 
        conn = connection.conn 
        self.assertFalse (conn.closed) 
        self.assertIsInstance (conn, Response) 
        self.assertEqual (pool.size, 1) 
        self.assertTrue ((connection in pool._acquired)) 
        connection2 = (yield From (pool.acquire ())) 
        conn2 = connection.conn 
        self.assertFalse (conn2.closed) 
        self.assertIsInstance (conn2, Response) 
        self.assertEqual (pool.size, 2) 
        self.assertTrue ((connection2 in pool._acquired)) 
        conn.close () 
        conn2.close () 
self.loop.run_until_complete (go ()) 

    
    

    Fix the buggy line: pool = Pool (url = 'ws://localhost:8182/', maxsize = 2, username = 'stephen', password = 'password', loop = pool.loop, future_class = Future)
assistant
#Here is Python program to fix the buggy line: pool = Pool (url = 'ws://localhost:8182/', maxsize = 2, username = 'stephen', password = 'password', loop = pool.

pool = Pool (url = 'ws://localhost:8182/', maxsize = 2, username = 'stephen', password = 'password', loop = self.loop, future_class = Future)