PEP8 fix
PEP8 fix


Former-commit-id: 57d2ff09276bb4d3c7ca31a5728c82a5342f7943 [formerly b56742a4c52d27302e25bcac01698194590f4957] [formerly b56742a4c52d27302e25bcac01698194590f4957 [formerly 0bf71b08402b98e486e9d2660140cff8a4b0b512]]
Former-commit-id: 44ce3b1fe9be67b8783e974b17aa1901f090c23f
Former-commit-id: b5893425fb5177c431b1b32c912ff8e39c2daf88
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine