Flask cli can't import application set with FLASK_APP

Question

Following the Flask 0.11 documentation, I cloned the Flask repo, created a virtualenv, and installed Flask via pip install flask. I went into the example

Answer 1

Flask issue for the eclipse and PyDev extension, you can set a path like this. Flask 1.0.2 and Python 3.6 already installed on Windows 10.

flask.cli.NoAppException
flask.cli.NoAppException: module 'src' has no attribute 'Hello'

Run Flask in proper folder path to resolve this issue.

Answer 2

I was setting FLASK_APP=flaskr. Since I hadn't installed my app as a package in my virtualenv, I needed to add the .py extension.

export FLASK_APP=flaskr.py