human
Solve the following python programming problem given the following code:
@ patch ('rerun.rerun.step') 
def test_mainloop_calls_step_with_first_time_then_repeatedly_without(self, mock_step) : 
    actions = [None, None, ZeroDivisionError] 
    def raise_next_action(options, first_time = False) : 
        action = actions.pop (0) 
        if action : 
            raise action () 
mock_step.side_effect = <MASK> 
    options = Mock () 
    with self.assertRaises (ZeroDivisionError) : 
        mainloop (options) 
self.assertEqual (mock_step.call_args_list, [call (options, first_time = True), call (options), call (options)]) 
    
    Given the code above, what is a proper replacement for <MASK>?
assistant
#Here is a proper replacement for <MASK>.
def raise_next_action(