ImportError: No module named flask.ext.login

Question

I have a problem with flask_login module.

i have installed flask_login module successfully. Also from the command prompt i can run this script easily with no error:

Answer 1

The solution is simple. Different versions of the flask run with different codes so just change the code : flask.ext.login to the code: flask_login

It should run smoothly.

Note that this also applies to bootstrap. Actually inorder to find the solution I had the error while importing bootstrap.

Answer 2

Strange But it worked when I tried to run the script from Command prompt

C:\Users\dib\Desktop>python foo.py
 * Running on http://127.0.0.1:5000/
127.0.0.1 - - [11/Feb/2014 18:03:52] "GET / HTTP/1.1" 200 -

But when I am trying to run from the python default IDE pressing f5 it is not working.

Answer 3

Install pip and then use the following command:

C:\Python27\scripts>pip install Flask-Login

Answer 4

See For me the simple solution is to just remove .ext from flask.ext.login and instead just type flask_login. This works for python 3 and make sure that you have correctly installed your desired package.

Answer 5

If following does not work:

from flask.ext.login import LoginManager

try the following:

from flask_login import LoginManager

This is the new convention.

To find the flask-login version, you can run the following command in terminal. Just change the name to know the version of other packages.

pip show flask-login

Answer 6

If you have already installed flask-login by

$pip install flask_login

Try replacing the

from flask.ext.login import LoginManager

with

from flask_login import LoginManager