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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 update(self, sequence):
 """ Update the set with the given iterable sequence, then return the index of the last element inserted. Example: 4 OrderedSet([1, 2, 3, 5, 4]) """

        item_index = None
        try:
            for item in sequence:
                item_index = self.add(item)
        except TypeError:
            raise ValueError(
                "Argument needs to be an iterable, got %s" % type(sequence)
            )
        return item_index