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+%0Aclass Persistence(object):%0A    %22%22%22 Data manager of bank accounts.%0A    Can also persist memory instances into persistent local storage.%22%22%22%0A%0A    users = %5B%5D%0A%0A    def save(self):%0A        %22%22%22 TODO%0A        %22%22%22%0A        pass%0A%0A    def load(self):%0A        %22%22%22 TODO%0A        %22%22%22%0A        pass%0A

Create persistence.py