Python import error when importing from init.py

Question

I have the following files inside a package called users:

file __init__.py:

from flask_sqlalchemy import SQLAlchemy
from .views import UserDetails, UserList

db = SQLAlchemy()

file models.py:

from users import db

class User(db.Model):
    pass

and file views.py:

from .models import User
from users import db

#code

But the following Import exception had occurred:

Error: While importing "users", an ImportError was raised:

Traceback (most recent call last):
  File "/var/www/microservices/venv/lib/python3.6/site-packages/flask/cli.py", line 240, in locate_app
    __import__(module_name)
  File "/var/www/microservices/Flask_Microservices/users/__init__.py", line 9, in <module>
    from .views import UserDetails, UserList
  File "/var/www/microservices/Flask_Microservices/users/views.py", line 5, in <module>
    from .models import User
  File "/var/www/microservices/Flask_Microservices/users/models.py", line 2, in <module>
    from users import db
ImportError: cannot import name 'db'

Any idea about what is wrong in my imports?

thank you, no unfortunately, views also use db. @00

adnanmuttaleb
– adnanmuttaleb

2019-08-01 09:33:28 +00:00
Commented Aug 1, 2019 at 9:33 — adnanmuttaleb
– adnanmuttaleb, Commented Aug 1, 2019 at 9:33

Mateusz Pydych · Accepted Answer · 2019-08-01 09:26:41Z

4

Wild guess. Try to move

from .views import UserDetails, UserList

under db = SQLAlchemy() so it looks like

from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()

from .views import UserDetails, UserList

when you execute import from views it tries to import db from init.py in views.py file. It is not present yet so error occurs. At least I think so.

answered Aug 1, 2019 at 9:26

Mateusz Pydych

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