break gracefully if no scipy
break gracefully if no scipy


Former-commit-id: 9c7f4d951a54912e11a6050a22b61c8228c5be3f
Former-commit-id: 80310077950e5ab667f991d57704c48f503c5d80 [formerly 2ec080e66cfb14970e494a4967fd8aa6ac117a92]
Former-commit-id: e32e330e3cd94a6b9909c8cb526383303f8a6c84
interrogator/corpkit,interrogator/corpkit