Fixed a Python 3->2 bug
Fixed a Python 3->2 bug


Former-commit-id: 7db9e7c3147a865addc2474e4e03940443815fb7 [formerly 7db9e7c3147a865addc2474e4e03940443815fb7 [formerly 84f3b2726f3ca2fbbfd49cc50d92df81764a2f40]]
Former-commit-id: 156cf3f3f179ceb5b39df92dcbe8861ee673f516
Former-commit-id: 7a946e0f4c0eef4ea61d2b1bac9ab499a9e1f2dd
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine