Fixed a PEP8 issue
Fixed a PEP8 issue


Former-commit-id: 5348492806b5c1aeda230f44321bbf9ab70eb918 [formerly 5348492806b5c1aeda230f44321bbf9ab70eb918 [formerly f153a5bcad7f054abbf7aa5d67cf5b826517fdd2]]
Former-commit-id: 03eac9f7aaf537eeed22ee95c2f1f19a45b58865
Former-commit-id: 4f903ccc2c8da9a8d6ce64a5e737651871aa2749
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine