human
Solve the following python programming problem given the following code:
def test_handle_deferred(self) : 
    now = time.time () 
    ret = [0] 
    for i in xrange (10) : 
        import sys 
        @ self.station.register_deferred 
        @ defer_until ((now - 30)) 
        def thunk() : 
            ret [0] += 1 
self.assertEqual (len (self.station.deferreds), 10) 
    self.station.handle_deferreds () 
    self.assertEqual (len (self.station.deferreds), 0) 
    self.assertEqual (i [0], 10) 

    
    

    Fix the buggy line: self.assertEqual (i [0], 10)
assistant
#Here is Python code to fix the buggy line: self.

self.assertEqual (ret [0], 10)