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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 preprocess_value(self, value, default=tuple()):
 """Preprocess the value for set """

        # empty value
        if not value:
            return default

        # list with one empty item
        if isinstance(value, (list, tuple)):
            if len(value) == 1 and not value[0]:
                return default

        if not isinstance(value, (list, tuple)):
            value = value,

        return value