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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def value(self):
 """ Fetch a random weighted choice """

        choice = weighted_choice(self._responses)

        # If the choice is a tuple, join the elements into a single mapped string
        if isinstance(choice, tuple):
            return ''.join(map(str, choice)).strip()

        # Otherwise, return the choice itself as a string
        return str(choice)