A strategy for mocking consecutive calls. For example, if you need to test retrying something if you get an Exception on your first pass

mock_consecutive_calls.py

@patch.object(TaskHelper, "get_parent")
def test_mocking(self, mock_get_parent):
              
    responses = [Exception('boom'), 'response']
    
    mock_get_parent.side_effect = lambda *args, **kw: responses.pop(0)
    result = TaskHelper.get_parent()
    if isinstance(result, Exception):
        raise result
    result = TaskHelper.get_parent()            
    print result