WARNING: This is a development server. Do not use it in a production deployment

conda install -c anaconda flask : flask install

flask를 실행할 때
WARNING: This is a development server. Do not use it in a production deployment.
이런 문구가 뜸
-> 해결방법 2가지
1. if name == "main":
from waitress import serve
serve(app, host="0.0.0.0", port=8080)

2. export FLASK_ENV=development
   flask run