ImportError: No module named application
This question already has an answer here:
I think that with Python 2, you will have to put an empty
__init__.py
file in your database directory
First your database folder isn't a proper python package.
Each package in Python is a directory which MUST contain a special file called __init__.py. This file can be empty, and it indicates that the directory it contains is a Python package, so it can be imported the same way a module can be imported. From learn python website
Second (and this is just a suggestion), to enforce a proper namespace you should create a package named after your app inside of your project directory and on top of every other packages:
myproject/
requirements.txt
setup.cfg
...
myapp/
__init__.py
app2.py
database/
__init__.py
dbconfig.py
Note that package name double always be lowercase and if needed use underscores as separators instead of a dash.
The namespace will be:
myapp.database.dbconfig.db
So from app2.py you can do for example:
from .database.dbconfig import db
Also your code declare the flask object both in app2.py and dbconfig.py. Therefore the application object in the app2.py module isn't bound to the Sqlalchemy object. You should declare your db in dbconfig then import it in app2.py and use the init_app method.
Finally
flat is better than nested
Zen of python
So this tree can be reduce to just a database.py containing the models and db object and the flask app object creation inside the myapp/__init__.py