some pylint fixes
some pylint fixes

eHealthAfrica/rapidsms,catalpainternational/rapidsms,peterayeni/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,ehealthafrica-ci/rapidsms,eHealthAfrica/rapidsms,rapidsms/rapidsms-core-dev,ehealthafrica-ci/rapidsms,ehealthafrica-ci/rapidsms,unicefuganda/edtrac,caktus/rapidsms,lsgunth/rapidsms,dimagi/rapidsms-core-dev,lsgunth/rapidsms,dimagi/rapidsms,catalpainternational/rapidsms,ken-muturi/rapidsms,peterayeni/rapidsms,caktus/rapidsms,peterayeni/rapidsms,catalpainternational/rapidsms,ken-muturi/rapidsms,unicefuganda/edtrac,lsgunth/rapidsms,ken-muturi/rapidsms,peterayeni/rapidsms,dimagi/rapidsms,eHealthAfrica/rapidsms,lsgunth/rapidsms,dimagi/rapidsms-core-dev,rapidsms/rapidsms-core-dev,caktus/rapidsms