PEP 8 fixes
PEP 8 fixes


Former-commit-id: dd06d7caf12de3359bb92cdcb0676c5c571386c6 [formerly 5dd1925038ef2ea6a9334c4f9bfde191b720acc5]
Former-commit-id: 086132370af75c179dfa2a32d89e236e211e81c7
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine