even more pylint fixes
even more pylint fixes


Former-commit-id: cad50439f924dbd813389eae0193dc74fb1ce3cc [formerly 27b1a7d5951d394193ccdccc9f94d9b76fd7de36]
Former-commit-id: 5ca6bd27737fc0387f40d389535f37d4e267dad3
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine