Fixed event_based/core_test.py
Fixed event_based/core_test.py


Former-commit-id: cba799b48e445b63b43bf4c32a590e7e7e2bf7a2 [formerly b3d3fe31effe6dc2a50d3202f299154c89b899bf]
Former-commit-id: 44cdf631781f4e3ff1d7bdec19c33f5aa90f9ac1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine