CODEWITHSUNDEEP
pythonflaskflask-wtforms
liv a
liv a

Reputation: 3340

No module named flask.ext.wtf

I'm following @Miguel flask mega tutorial which is great. In chapter 3 he talks about web forms and flaskWTF extension, installing the extension like this sudo pip install Flask-WTF resulted in

Successfully installed Flask-WTF Flask WTForms Werkzeug Jinja2 itsdangerous markupsafe

but when executing ./run.py i get an error:

No module named flask.ext.wtf`

I've google the error and tried to run it like this: flask/bin/python run.py but got the same error, also tried flask/bin/activate

Update: if you run into the same error this is what solved the issue for me I've installed the following, for sure they are not all needed but since i didn't go one by one to find out which one did the trick i'm listing them all

flask/bin/pip install flask-login
flask/bin/pip install flask-openid
flask/bin/pip install flask-mail
flask/bin/pip install sqlalchemy
flask/bin/pip install flask-sqlalchemy
flask/bin/pip install sqlalchemy-migrate
flask/bin/pip install flask-whooshalchemy==0.55a
flask/bin/pip install flask-wtf
flask/bin/pip install pytz
flask/bin/pip install flask-babel
flask/bin/pip install flup

Upvotes: 18

Views: 51906

Answers (7)

olleh
olleh

Reputation: 1277

I had the same problem. I read steps 1 again to check where I slipped.

Remember to install the necessary modules for your project.

In this case the following:

flask/bin/pip install flask-login
flask/bin/pip install flask-openid
flask/bin/pip install flask-mail
flask/bin/pip install sqlalchemy
flask/bin/pip install flask-sqlalchemy
flask/bin/pip install sqlalchemy-migrate
flask/bin/pip install flask-whooshalchemy==0.55a
flask/bin/pip install flask-wtf
flask/bin/pip install pytz
flask/bin/pip install flask-babel
flask/bin/pip install flup

Since you've created this virtual environment, "flask", all the modules installed are available only in your virtual environment(flask).

Remember to run "flask/Scripts/python run.py" and not "python run.py"

Upvotes: 7

Pavel Chernikov
Pavel Chernikov

Reputation: 2266

The API has changed from:

from flask.ext.wtf import Form

to:

from flask_wtf import Form

See the docs here

Upvotes: 21

Théo T. Carranza
Théo T. Carranza

Reputation: 8449

Do this: . flask/bin/activate

Then it'll work properly.

Cheers.

Upvotes: 0

xiu
xiu

Reputation: 1

you can run the command:pip install -U Flask-WTF ,and change to from flask.ext.wtf import Form from wtforms import TextField, BooleanField from wtforms.validators import Required

Upvotes: -1

moovon
moovon

Reputation: 2359

Even after changing different import styles and re-installing flask, flask-wtf, if it still does not works : then in the config.py("config.py may be of different name eg app_config.py etc)

insert the line

sys.path.insert(0, os.path.join(os.path.dirname(__file__), 
'venv/Lib/site-packages'))

set the lib path of your own app , in my case it was "venv/Lib/site-packages"

Upvotes: 1

jbub
jbub

Reputation: 2665

You are probably using the import style from the older versions:

from flask.ext.wtf import Form, TextField, BooleanField
from flask.ext.wtf import Required

The import style changed starting from 0.9.0 version. Be sure to update your imports:

from flask.ext.wtf import Form
from wtforms.fields import TextField, BooleanField
from wtforms.validators import Required

You can find the note about this change in the upgrade section of docs:

https://flask-wtf.readthedocs.org/en/latest/upgrade.html#version-0-9-0

Upvotes: 14

Doobeh
Doobeh

Reputation: 9440

jbub's right, but is addressing a problem you will run into, rather then the problem you're currently having-- the tutorial is dated, and doesn't mention what versions of the library the user should be using, so if you do as the tutorial says you are going to run into problems unless you change your import lines to match what jbub says.

But-- the problem you're currently having isn't that-- if it were, your error would be No module named flask.ext.wtf.Textfield at the moment it can't see the library at all.

That means you haven't installed the Flask-WTF library to the correct location, in this case, it looks like it should be installed in your virtual environment, which you seem to have created under a directory called flask, to make things a little clearer, I'm going to refer to that directory as venv.

The virtual environment is a little room, you need to step into it, then put things on the shelf (install your libraries). So, first you need to activate your virtual environment, so launch a terminal and navigate to the virtual environment you created (the venv dir), and then activate it (walk into the room):

source bin/activate

Your console prompt will change to show you've activated it for this terminal-- now your terminal is standing in the room, so you can install your libraries as required, you don't even need sudo any more, because your little room is safe for your user to play in, it doesn't effect the world outside it's door. So lets install flask-wtf (and any other libraries you may need by asking pip):

pip install flask-wtf etc.

Now, because you're in the virutal environment, it will launch the version of python that exists there and see all the libraries you've set up, which is what you want. So while the terminal prompt shows your virtual environment is still active, you can launch your run.py file by running python run.py and it should solve your issue.

Upvotes: 5

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