PEP8 fixes
PEP8 fixes


Former-commit-id: bb008ba1b573c42ed03a6d891976a5c70f2f9dd6 [formerly b74e40a7add47dbefcb7f4b938b838a9ddf05253]
Former-commit-id: e2eb2215eb7c5e261e5450d206a09b0ca6efe134
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine