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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 raw_name(self):
 """The last part of raw_parts."""

        parts = self.raw_parts
        if self.is_absolute():
            parts = parts[1:]
            if not parts:
                return ""
            else:
                return parts[-1]
        else:
            return parts[-1]