human
Solve the following python programming problem given the following code:
@ with_in_memory_connection 
def test_gather(self, conn) : 
    def collect_replies() : 
        (yield 1) 
        (yield 2) 
        (yield 3) 
ticket = uuid () 
    actor = Actor (conn) 
    actor._collect_replies = Mock (return_value = collect_replies ()) 
    ares = AsyncResult (ticket, actor) 
    ares.to_python = Mock () 
    all = ares.gather () 
    list (all) 
    actor._collect_replies.assert_caleld_once_with (conn, ANY, ticket) 
    self.assertEqual (ares.to_python.call_count, len (list (collect_replies ()))) 
    actor._collect_replies.reset_mock () 
    actor._collect_replies = Mock (return_value = collect_replies ()) 
    prev_to_python = ares.to_python 
    new_to_python = (lambda x, propagate = True : ('called_%s' % x)) 
    ares.to_python = new_to_python 
    all = ares.gather () 
    vals = list (all) 
    expected_vals = [new_to_python (i) for i in collect_replies ()] 
    actor._collect_replies.assert_caleld_once_with (conn, ANY, ticket) 
    self.assertEqual (vals, conn) 
    ares.to_python = prev_to_python 

    
    

    Fix the buggy line: self.assertEqual (vals, conn)
assistant
#Here is Python code to fix the buggy line: self.

self.assertEqual (vals, expected_vals)