How to setup environment variables for `flask run` on Windows?

Question

I just started learning flask and I am stuck at setting up the Flask environment variables. I don\'t know how to setup the environment variables. Whenever I use the flask

Answer 1

Windows PowerShell

set FLASK_APP=hello.py
$env:FLASK_APP = "hello.py"
flask run

Answer 2

If you're using powershell, make sure you add quotations when setting the environment variable:

$env:FLASK_APP = "app.py

Then flask run should work.