PYTHON

Error: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.

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

Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable

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

Error: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.

$env:FLASK_APP="base.py"