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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 parts(self):
 """An object providing sequence-like access to the components in the filesystem path."""

        # We cache the tuple to avoid building a new one each time .parts
        # is accessed.  XXX is this necessary?
        try:
            return self._pparts
        except AttributeError:
            self._pparts = tuple(self._parts)
            return self._pparts