Fixing pep8 issues
Fixing pep8 issues

Former-commit-id: 237ac299588f49deb6317237f1f90ae75ab9054a [formerly bbd483196c430f34a66d826b67f27cdecf167f26] [formerly bbd483196c430f34a66d826b67f27cdecf167f26 [formerly dde478f2c2cfe5a435c06c93873b3a4183c4f6e8]]
Former-commit-id: 2411cb5813906ecaf79fb786290ff653b7f70a94
Former-commit-id: 5f0947a5f5722049807545875c843269f9a536f4
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine