pep8 fix
pep8 fix


Former-commit-id: 1ed7fb710976310cd07ecc83feb2562b01db1b7f [formerly 1ed7fb710976310cd07ecc83feb2562b01db1b7f [formerly 6ff73cb099269181eb6a6809da25852891c676f6]]
Former-commit-id: 1f836ac09de606cee5b1e2d7712457848f2611f1
Former-commit-id: 4b2d6f6b8c332c15ff92000edb0eb6ddf8a63141
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine