Not much, so I will ask a question. What's more pythonic - avoiding getters/setters, or having assignment do more than simple assignment without the caller know

Not much, so I will ask a question. What's more pythonic - avoiding getters/setters, or having assignment do more than simple assignment without the caller knowing about it? Or does the issue simply not come up in practice, because you rarely need to redefine how assignment/accessing works?