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

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

> set FLASK_APP=hello
> set FLASK_ENV=development
> flask run

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

$ export FLASK_APP=example
$ export FLASK_ENV=development
$ flask run