How to remember the penultimate message of a user?

Question

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How can you remember the penultimate message of the user so that the bot in VK, relying on it, can already perform different tasks depending on this penultimate message?

Answer 1

I'm not sure about practicality, but I would create a list, add the last elements there, and then cut it down to the last two, respectively, a list of two elements in the first place contains the penultimate one. You can contact him. But I think there is a better solution