Fix flake8 issue in prompt.py and address PR comments
Fix flake8 issue in prompt.py and address PR comments

audreyr/cookiecutter,luzfcb/cookiecutter,stevepiercy/cookiecutter,pjbull/cookiecutter,audreyr/cookiecutter,terryjbates/cookiecutter,luzfcb/cookiecutter,dajose/cookiecutter,pjbull/cookiecutter,dajose/cookiecutter,michaeljoseph/cookiecutter,michaeljoseph/cookiecutter,hackebrot/cookiecutter,terryjbates/cookiecutter,stevepiercy/cookiecutter,hackebrot/cookiecutter