Fixed Pylint/PEP8 issues
Fixed Pylint/PEP8 issues


Former-commit-id: d44ca5d25a1a082afbe0c3bfeab23e7008f7079b [formerly d44ca5d25a1a082afbe0c3bfeab23e7008f7079b [formerly 7ded08bfcee2340d3e7e20f202684db091b9c4cd]]
Former-commit-id: fa9f5c67b58c2d2abf5fc56bd27793051bcd977e
Former-commit-id: 0a9b9fd3a3761d5ff2590a12046ddb3d3e264f68
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine