def inverse(self):
        return self._new_instance(sp.linalg.inv(self.matrix.tocsc()))
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dataset/ETHPy150Open jimmycallin/pydsm/pydsm/indexmatrix.py/IndexMatrix.inverse--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/gcloud-python/gcloud/storage/bucket.py/Bucket.versioning_enabled