3

I have tried both

from flask.ext.sqlalchemy import SQLAlchemy

and

from flask_sqlalchemy import SQLAlchemy

inside flask/esk I only have a __init__.py and a __init__.pyc, and inside flask_sqlalchemy I only have _compat.py, _coompat.pyc, __init__.py and __init__.pyc. Should I copy the SQLAlchemy package in to one of these directories? I read here that ext is deprected so I'm unsure.

stack-overflow deprected flask ext

I'm getting these errors

ImportError: No module named flask_sqlalchemy

and

ImportError: No module named flask.ext.sqlalchemy

I installed with pip

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4
  • How did you install Flask-SQLAlchemy? Commented Nov 10, 2015 at 13:17
  • I used sudo pip, it was in a virtual env but i've also tried on my main machine. Commented Nov 10, 2015 at 13:25
  • Pip will install a library's dependencies, so SQLAlchemy should be there, too. Please update your answer with the exact error you're getting. Commented Nov 10, 2015 at 13:27
  • Yeah I know they should be there. Commented Nov 10, 2015 at 13:35

1 Answer 1

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5

Flask-SQLAlchemy doesn't come with Flask. You need to install it. You are correct, flask.ext is deprecated, but all it is is a "shortcut" for accessing other installed packages that are Flask extensions. Since you haven't installed Flask-SQLAlchemy, you can't import it.

$ pip install flask-sqlalchemy

It is bad practice to manually install libraries to the system Python location (sudo pip). Use a virtualenv.

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