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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_nsymop(self):
 """Returns total number of symmetry operations."""

        if self.centrosymmetric:
            return 2 * len(self._rotations) * len(self._subtrans)
        else:
            return len(self._rotations) * len(self._subtrans)