Fixed Python 3 bug
Fixed Python 3 bug


Former-commit-id: e2fa58cffd69fb71ded7c54637bdf4032f56ccae [formerly e2fa58cffd69fb71ded7c54637bdf4032f56ccae [formerly ce4982dffdea8849c13c69fac8eed10c9c4fd8f6]]
Former-commit-id: af600673a9ec077785c7b5ad2276fa280bca0938
Former-commit-id: 0c5e33cb17ab9712790213028f1f7b9cb7aff628
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine