human
Solve the following python programming problem given the following code:
@ tag ('important') 
def test_return_global_array(self) : 
    y = np.ones (4, dtype = np.float32) 
    initrefct = sys.getrefcount (y) 
    def return_external_array() : 
        return y 
cfunc = nrtjit (return_external_array) 
    out = cfunc () 
    self.assertEqual ((initrefct + 1), sys.getrefcount (y)) 
    np.testing.assert_equal (y, out) 
    np.testing.assert_equal (y, np.ones (4, dtype = np.float32)) 
    np.testing.assert_equal (out, np.ones (4, dtype = np.float32)) 
    del out 
    self.assertEqual ((initrefct + 1), sys.getrefcount (y)) 
    del cfunc 
    self.assertEqual (initrefct, sys.getrefcount (return_external_array)) 

    
    

    Fix the buggy line: self.assertEqual (initrefct, sys.getrefcount (return_external_array))
assistant
#Here is Python code to fix the buggy line: self.

self.assertEqual (initrefct, sys.getrefcount (y))