resolve flake8 issue
resolve flake8 issue

SexualHealthInnovations/callisto-core,SexualHealthInnovations/callisto-core,SexualHealthInnovations/django-wizard-builder,scattermagic/django-wizard-builder,project-callisto/callisto-core,SexualHealthInnovations/django-wizard-builder,scattermagic/django-wizard-builder,project-callisto/callisto-core