pylint & pep8
pylint & pep8


Former-commit-id: 830b62d48af018cd2e567d2d5ad84232a8a885e5 [formerly 0a8b8e1a413b495c4724cd4a7f9bafb169524d5f]
Former-commit-id: 1a4cb1e86d4d079f23274ecf202c25150de85f27
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine