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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 get_point_group_symbol(self):
 """ Get the point group associated with the structure. Returns: (Pointgroup):
 Point group for structure. """

        rotations = self._space_group_data["rotations"]
        # passing a 0-length rotations list to spglib can segfault
        if len(rotations) == 0:
            return '1'
        return spglib.get_pointgroup(rotations)[0].strip()