ImportError: cannot import name 'app'

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 Hello,miguel。I have finished your awesome "dog book" three weeks ago, and my code  bases on your  code. The 'app' is created in app/__init__.py, 
 Now I want  to add the full-text search function,but i don't know how to import 'app'.When i tried  to import it directly  like"from app import app", it didn't work and "ImportError: cannot import name 'app'" came out. i have try google and stackoverflow , but there were not helpful answer.
so i ask you for help. My english is not very well, hope you can understand what i say.Have a nice day!

Issue Analytics

State:
Created 7 years ago
Comments:5 (2 by maintainers)

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2reactions

miguelgrinbergcommented, Oct 21, 2016

Your problem is that you have circular dependencies. Some of the imports in manage.py that appear before the app = create_app() line issue a from manage import app, and that obviously fails.

Move the from app import create_app and app = create_app lines above your other imports, maybe that’ll help.

2reactions

miguelgrinbergcommented, Oct 20, 2016

Are you using a factory function, like in the book? If you are, then app does not exist as a symbol, you only have create_app, the function that creates it.

So you need to import app from the module that creates it. For example, if you call create_app in manage.py, then you can import it from there with from manage import app.

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