minor pylint issue
minor pylint issue


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Former-commit-id: 12e533cea9b21f8e10b9268113a51ae10ebc2c33
Former-commit-id: 0f402bf31c02a3728f4543ad947266a92cdd8a89
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine