pylint violation fixed
pylint violation fixed


Former-commit-id: 4db96b1ca18531485ddf417d092d4eb661ce7da5 [formerly 4db96b1ca18531485ddf417d092d4eb661ce7da5 [formerly d694f4a753e5774c570040398345d0492f8b8427]]
Former-commit-id: cb57ae241f3e383e723a9d17aef6164d1d12a843
Former-commit-id: 27e7c4d72a5d995ce16abc485a141c058987a558
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine