PythonAnywhere.com Flask web app: no module named 'flask_app'

Question

I am new to Python Anywhere and I'm trying to set up a Flask web app I have already built. I followed this tutorial: https://help.pythonanywhere.com/pages/Flask/

But when I try to access the site the log says this:

Error running WSGI application
2018-07-24 11:25:47,696: ModuleNotFoundError: No module named 'flask_app'
2018-07-24 11:25:47,697:   File "/var/www/vdvaxel_pythonanywhere_com_wsgi.py", line 111, in <module>
2018-07-24 11:25:47,697:     from flask_app import app as application  # noqa

I followed the tutorial step by step but still it doesn't work. Can someone explain me what is wrong?

Answer 1

You need to replace flask_app with the name of the file containing app and the app structure (routes, etc). Navigate to:

https://www.pythonanywhere.com/user/{your_username}/files/var/www/vdvaxel_pythonanywhere_com_wsgi.py

Then, on the last line of the file, which is currently from flask_app import app as application , replace flask_app with the filename of your current app:

from my_new_web_app import app as application

Also, ensure that project_home in the wsgi file is pointing to the folder that stores your flask app file, along with any other folders such as templates , static , etc. To find the proper path, navigate to the folder itself and copy the "breadcrumb" navigation, just below the pythonanywhere logo.

Then save the file and access your site again.

Answer 2

It's difficult to answer without the details of your code structure.

1) Is your Flask web app in a file called flask_app.py ?

2) Have you uncommented and updated the block of code from section Configuring the WSGI file :

import sys
path = '/home/yourusername/mysite'
if path not in sys.path:
    sys.path.append(path)

so the path variable value really is the path were the flask_app.py file is located ?