export flask_env=development not working not recognized code example
Example 1: run flask app from command line
# For bash do this:
set FLASK_APP=<app_name>
# For powershell do this:
$env FLASK_APP=<app_name>
# Run it like this
flask run
Example 2: run flask app from script
# I am assuming that you have configured the app name as "app"
if __name__ == "__main__":
app.run()