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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 contiguous(self):
 """Object-based iterator over contiguous range sets."""

        pad = self.padding or 0
        for sli in self._contiguous_slices():
            yield RangeSet.fromone(slice(sli.start, sli.stop, sli.step), pad)